To see the other types of publications on this topic, follow the link: Turkish aquaculture.
Journal articles on the topic 'Turkish aquaculture'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Turkish aquaculture.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Buyukates, Yesim, Sebahattin Ergun, and Murat Yigit. "SUSTAINABLE SURGE IN TURKISH SALMON CULTURE: PRIORITIZING ENVIRONMENTAL RESPONSIBILITY." Aquatic Animal Reports 2, no. 2 (2024): 20–30. https://doi.org/10.5281/zenodo.13494124.
Full textAbstract:
The Turkish aquaculture sector has rapidly expanded, establishing itself as a leading force in global markets, particularly through the cultivation of Turkish salmon, a large rainbow trout species grown in offshore cages in the Black Sea. This study investigates the environmental sustainability of Turkish salmon farming, focusing on water quality parameters, nutrient levels, and the ecological impact of aquaculture practices in two potential aquaculture areas along the Turkish Black Sea coast. The research applies the Trix Index, a widely used metric for assessing eutrophication risks in coastal waters, to evaluate the suitability of these areas for aquaculture. Results indicate that the studied regions maintain optimal water quality conditions and present no significant risk of eutrophication, supporting the sustainability of aquaculture operations. The findings underscore the importance of strategic planning and environmental monitoring in expanding aquaculture while preserving marine ecosystems.
2
Ümüt, YIGIT, and KUSKU Halit. "Comparison of production trends in Japan with long history in aquaculture and challenging success of Türkiye as a fairly new country in fish farming." Marine Reports 1, no. 2 (2022): 99–109. https://doi.org/10.5281/zenodo.7393998.
Full textAbstract:
The struggle efforts and success of the Turkish aquaculture industry from past to present have been investigated with comparative evaluation of aquaculture trends in Japan, a country with significant infrastructure in fish farming. Despite its long history of fish farming, Japanese aquaculture production has stabilized over the last two decades, while Turkish aquaculture is in a rapid growth period, ranking among top producers in the world. The lower correlation between production and annual increase of population growth recorded for Japan (R= 0.795207) compared to the higher correlation for Türkiye (R= 0.930835), based on statistical data over the past 40 years, showed that population growth has influence on fish farming yields. The increasing number of younger adults in Türkiye provide advantageous conditions for the selection of qualified personnel from a wider range with higher opportunities in the employment of staff for the Turkish aquaculture sector. In Japan however, along with a variety of reasons, the industrialization has potentially shifted the interests towards technology-based businesses rather than marine works. Introducing high-tech aquaculture systems might reattract young generations, that may help restructuring Japanese aquaculture business. Hence, this study provides useful indications for decision makers in the management of securing the future of the aquaculture industry by reducing the so-called generation gap in aquaculture recruitments.
3
Yıldırım, Çağatay, Hatice Türkten, and Vedat Ceyhan. "Evaluation of competitiveness power of fishing and aquaculture industry in Turkey." Ege Journal of Fisheries and Aquatic Sciences 39, no. 3 (2022): 243–52. http://dx.doi.org/10.12714/egejfas.39.3.10.
Full textAbstract:
There has been a significant lack of data on product and input markets, aquaculture consumption characteristics, production, distribution and marketing issues, and supply and value chain in Turkish fishing and aquaculture sectors. Therefore, the study examined the competitiveness of the Turkish aquaculture industry. Time series data belonging the time period of 1976-2020 gathered from Food and Agriculture Organization (FAO), World Trade Organization and Turkish Statistical Institute (TURKSTAT) were used in the study. In the research, the competitiveness of the Turkish fishing and aquaculture sector has been explored by using the Balassa index, total factor productivity and production costs. The research results show that the fisheries in Turkey are small-scale, technological level are insufficient and there are financial problems. Based on the revealed comparative advantage (RCA) values of the world and EU, which are 0.65 and 1.86, respectively, Turkey 's has competitive power over EU countries, while the reverse is the case for the world. Although fisheries supply chain has been established in Turkey, the value chain has not yet been fully established and activated. The study suggests increasing the efficiency in aquaculture production, having a strong interaction with the market during the production phase, having a high awareness of the price trends and consumer needs throughout the supply chain, using modern production and distribution technologies, and developing effective extension/education activities to reach the desired point in the Turkish aquaculture sector. Quality standards should be at the international level to increase export opportunities and competitiveness of Turkish aquaculture sector.
4
Yilmaz, Mesut, and Serpil Yilmaz. "Employment and Problems in Turkish Aquaculture Industry." АГРОЗНАЊЕ 17, no. 4 (2017): 371. http://dx.doi.org/10.7251/agren1604371y.
Full textAbstract:
Technical staff employment at fish farms is regulated by legislations and circulars in Turkey. However, it is frequently observed that those rules are not followed. This study deals with the resources of aquaculture production in Turkey and the actual employment situation in this area. Besides, current and ideal employees’ numbers were compared and current and ideal aquaculture engineers’ numbers in aquaculture industry were quoted. In this context, actual production, costs and fixed capital investment and sales over the last decade were assessed in relation to employment. The conclusion is that the employment problems related to the qualified workers will continue to increase in the coming years.
5
Rad, Ferit, İsa Şen, and Tevfik Aytemiz. "CERES Project: Prospects for Turkish Aquaculture Industry." Sümder, Su Ürünleri Mühendisleri Derneği Dergisi, no. 62 (May 1, 2016): 20–21. https://doi.org/10.5281/zenodo.2641341.
Full text
6
Ümüt, YIGIT, TAYLOR Nic, ERGÜN Sebahattin, and YIGIT Murat. "PRODUCTION EFFORTS FOR NEW CANDIDATE FINFISH SPECIES IN TURKISH MARINE AQUACULTURE." Aquatic Animal Reports 1, no. 2 (2023): 104–11. https://doi.org/10.5281/zenodo.8229352.
Full textAbstract:
<strong>Abstract</strong> The present study covers a summary of efforts for Turkish marine finfish aquaculture over the past twenty years with a special insight to candidate species which could be an alternative to those traditionally produced at present. With its rapid growth trend, the Turkish aquaculture industry has become a key player among the World’s leading producers in marine fishes, especially seabream, seabass and trout farming. However, the oversupply of such species causes price fluctuations from time to time, that result in reduction of cash flow and farm profitability. Bottlenecks driven by the market imbalances cause severe problems for small and medium sized companies that come to crossroads for new business strategies. In the present study, the circumstances coupled with new marketing strategies to overcome profitability challenges have been evaluated with background information of the efforts to introduce new candidate species into the Turkish aquaculture industry.
7
Ebru, YILMAZ, and TAN Uğur. "EFFECTS OF MEDICINAL PLANTS AND THEIR EXTRACTS AS DIETARY ADDITIVES ON FISH GROWTH AND FEED EFFICIENCY IN TURKISH AQUACULTURE: A REVIEW." Aquatic Animal Reports 1, no. 1 (2023): 34–51. https://doi.org/10.5281/zenodo.7660417.
Full textAbstract:
<strong>Abstract</strong> The inadequacy of natural aquaculture stocks to meet the protein needs of the increasing population of today led to an increase in the importance assigned to aquaculture. The fight against infectious diseases that cause financial losses in production is gaining importance everyday while the amount of aquacultural production and stocks increases as well. Antibiotics are used to prevent diseases and promote growth. The official prohibition of the use of antibiotics as growth stimulators by the European Union as of 01 January 2006, made it compulsory to use natural additives in animal nutrition. In this review, studies on the effects of medicinal plants that were used as natural additives in the aquaculture sector in Turkey in the last 10 years on the growth performance of fish were evaluated.
8
YIGIT, Ümüt, Murat YIGIT, Sebahattin ERGÜN, Feyza SANVER, and Nic TAYLOR. "Competitive economic trends of steelhead farming in Türkiye and Norway." Marine Reports 2, no. 1 (2023): 16–25. https://doi.org/10.5281/zenodo.8050627.
Full textAbstract:
This study evaluates the competitive economic trends in respect to the production growth of Steelhead in the Norwegian and Turkish aquaculture sectors. These two countries are the leading key fish producers who supply remarkable volumes of farmed fish to satisfy the growing demand worldwide. The main two producers in this study were identified by annual production yields based on FAO statistics. Growth trends and economic performance of the key players were comparatively evaluated and superimposed with population growth from 1994 to 2021. Harvested steelhead in the Norwegian aquaculture increased 6.6-fold from 14,367 to 94,660 tons between 1994 and 2021, whereas Turkish steelhead production increased from 14,367 to 165,687 tons with nearly 23.8-fold improvement over the last 27 years. Despite superior yields achieved by Norwegian producers, which was 51.4% more than the Turkish harvest in 1994, Turkish production succeeded in catch-up in 2009, and exceeded Norwegian steelhead production by 42.9% in 2021. Nonetheless both countries attained similar economic return, Norwegian production profiting slightly higher by 1.43%. Turkish steelhead farming reaped larger volumes. Nevertheless, Norwegian yield clinched clienteles with higher price in the market, and achieved 43.7% more monetary value compared to Turkish production in 2021. This was, however, in contrary to what Turkish industry has performed in 1994, 39.2% higher profits compared to Norwegian production. A strong correlation has been noted between production and population increase in the case of Türkiye (R= 0.9577436) compared to Norway with a considerably lower correlation of R= 0.7099250 for the past 27 years. The results of this study corroborate, factors such as operational, marketing, and branding strategies other than production volume capacity play part in generating high economic value from aquaculture production as it’s been shown in this study with steelhead production. However, further exploration is essential.
9
Harlioğlu, Muzaffer Mustafa, and Ardavan Farhadi B. "Androgenic hormones in crustacean aquaculture: a review." Turkish Journal of Zoology 46, no. 3 (2022): 237–48. https://doi.org/10.55730/1300-0179.3052.
Full textAbstract:
Harlioğlu, Muzaffer Mustafa, B, Ardavan Farhadi (2022): Androgenic hormones in crustacean aquaculture: a review. Turkish Journal of Zoology 46 (3): 237-248, DOI: 10.55730/1300-0179.3052, URL: http://dx.doi.org/10.55730/1300-0179.3052
10
Akmermer, Bilgen, and Pelin Çelik. "Contribution of fishery and aquaculture products to Turkish foreign trade: An evaluation by a hybrid multi-criteria decision-making method." Ege Journal of Fisheries and Aquatic Sciences 38, no. 3 (2021): 275–82. http://dx.doi.org/10.12714/egejfas.38.3.03.
Full textAbstract:
Fisheries and aquaculture industry, which provides a continuous and high-return market advantage to potential countries, is also one of the priority industries for Turkey. Although Turkey has important advantages with its geographic position and bio-diversity, the industry's contribution to foreign trade is not at an acceptable level. Accordingly, it is important to evaluate the capture fishery and aquaculture products, which provide the best contribution to the foreign trade of Turkey. Thus, the present paper aims to provide foreign trade executives with an intuition about the most appropriate products to invest in and contributing products to Turkish foreign trade within the scope of market strategies. Entropy-WASPAS, which is a hybrid multi-criteria decision-making method, is used for evaluating the contribution of fishery and aquaculture products to Turkish foreign trade. This model includes both criteria (production, import quantity, import value, export quantity, export value) and alternatives (trout, sea bream, sea bass, sprat, atlantic bonito, anchovy, horse mackerel, pilchard, sea snail, prawn, cuttle fish, mussel). Entropy is used to determine the criteria weights, and WASPAS is applied for ranking the fishery and aquaculture products. According to the results, export value is the most important criteria while Sea Bream is found as the most significant product for Turkey’s foreign trade.
11
Soykan, Ozan. "An analysis on the statistics of occupational accidents in Turkish fisheries and aquaculture sector; 2013-2019 period." Ege Journal of Fisheries and Aquatic Sciences 38, no. 4 (2021): 533–44. http://dx.doi.org/10.12714/egejfas.38.4.16.
Full textAbstract:
This study was carried out to make a holistic evaluation on the occupational health and safety (OHS) of fisheries and aquaculture sector with its subsectors and to reveal the actual situation of fisheries and aquaculture sector by comparing relevant OHS statistics reported in Turkey. Annual average of accidents in the fisheries and aquaculture sector was found to be 312 (± 147.6), of which 2.14 (± 1.57) resulted in permanent incapacity and 1.57 (± 1.51) of them with fatality. While general incidence rate, fatal incidence rate, permanent incapacity incidence rate and work accident frequency rate were calculated as 2211.8 (±574) 103.6 (±13.4), 5.88 (±2.41) ve 8.36 (±1.93), these values for fisheries and aquaculture sector were determined to be 3579.1 (±1549.3) 175.65 (±152.34), 240.67 (154.62) ve 13.65 (±5.84), respectively. In 2019, the fatal accident rate in Turkey was found to be 0.27% in general, 0.34% in the mining sector, 0.77% in construction and 0.80% in transportation. This ratio was calculated as 1% in the fisheries and aquaculture sector. It was determined that there were more work accidents and fatal incidents in fisheries and aquaculture activities in the seas than in fresh water. Difference between number of work accidents and the duration of temporary incapacity as a result of work accidents in fisheries and aquaculture activities in marine and fresh waters were also significant (p<0.05). Number of fatal accidents in aquaculture sector was found to be more than 4 times than in fisheries. It was determined that the all types of incident rates, work accident frequency rates and fatality rates per work accident in fisheries and aquaculture sector were higher than that of Turkey in general. Evaluation of occupational accidents in the fisheries and aquaculture activity was found to be riskier than expected. Although some evaluations and suggestions are put forward to reduce the number of accidents and the severity of these accidents, a systematic and legislative approach will be more effective. Therefore, it would be a suitable approach to raise the hazard classes of fisheries and aquaculture economic activity to the “very dangerous” class. In this way, the training period of the sector employees on occupational risks and the titles and numbers of OHS professionals working in the sector will be increased, a more qualified specialization will be realized, and control and audit activities will be more frequent.
12
Trenkler, Igor Vladimirovich. "The aquaculture of acipenseriformes. Part 5. Dunabe Basin and Middle East." Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries), no. 9 (September 1, 2020): 69–81. http://dx.doi.org/10.33920/sel-09-2009-07.
Full textAbstract:
The history and contemporary state of global aquaculture of sturgeons and paddlefish are reviewed. 5th part is devoted to sturgeon breeding in the basin of Black sea (without countries of former USSR reviewed earlier) аnd in the Middle East. Six species of sturgeon once migrated in the Danube River and Turkish rivers Yeşilırmak, Kızılirmak and Sakarya for spawning: anadromous beluga Huso huso, Russian sturgeon Acipenser gueldenstaedtii, stellate sturgeon A.stellatus, European sturgeon A. sturio and the river resident ship sturgeon A. nudiventris and sterlet A. ruthenus. Sturgeons had played an important role in the history Black sea fisheries, but due to overexploitation, followed by extensive river regulations and deterioration of water quality decrease in their populations has led most of them to the verge of extinction. During the 20th Century, world demand for sturgeon meat and caviar has inflated the economic value of sturgeons so Danube basin countries and Turkey develop commercial aquaculture and conservational programs. As result of protective measures the limited natural spawning of beluga, Russian and stellate sturgeons and sterlet is preserved in Danube. In Sakarya River last spawning population of stellate sturgeon exists. These species and Siberian sturgeon are important objects of commercial aquaculture in all countries of Black sea basin. The leaders of commercial sturgeon farming in this region are Bulgaria and Israel. The sturgeon aquaculture of Hungary and Turkey developed rapidly. Saudi Arabia and United Arab Emirates are important importers of caviar. Saudi Arabia is large consumer of caviar and UAE is one of main re-exporter of caviar. Both Arab countries develop own sturgeon aquaculture.
13
ACARLI, Sefa, Harun YILDIZ, and Pervin VURAL. "Morphometric Characteristics of Invasive Species Magallana gigas (Thunberg, 1793) in Bandırma Bay, Marmara Sea." Marine Science and Technology Bulletin 12, no. 3 (2023): 322–31. http://dx.doi.org/10.33714/masteb.1337592.
Full textAbstract:
Türkiye’s seas are the scene of the spread of invasive species in the entire Mediterranean basin due to the marine transportation of alien species and intensive aquaculture activities. In order to protect the natural ecosystem and track invasive species’ effects, these species must first be accurately identified and their distribution areas specified. The alien species, Magallana gigas (Pacific oyster), has introduced along the Turkish coasts. This study was carried out to determine the morphometric characteristics of Magallana gigas in the Bandırma Bay-Balıkesir between November 2013 and October 2014. Shell length varied between 68.08 mm (February) and 93.14 mm (April) during the year. Shell height was measured at the lowest 41.90 mm in February, and the highest 59.46 mm in June. Shell width was 35.80 mm in November when the study started, and it decreased gradually and reached its lowest value in February. W/L relationship of M. gigas was calculated as W=0.411×L2.653(R2=0.064) This study includes knowledges on morphometric relationships for the Pacific oyster which is crucial for the management of fisheries, aquaculture activities and native species (Ostrea edulis).
14
Ak, Kübra, İlker Zeki Kurtoğlu, Ramazan Serezli, Şevki Kayış, and İlhan Yandı. "Introduce the Siberian Sturgeon (Acipenser baerii) to Turkish aquaculture industry: Duoculture possibility with Rainbow Trout." Vol:36 Issue:3 36, no. 3 (2019): 211–17. http://dx.doi.org/10.12714/egejfas.2019.36.3.02.
Full textAbstract:
Duo culture response of Siberian sturgeon (Acipenser baeri) and rainbow trout (Oncorhynchus mykiss) was evaluated in culture tank conditions. Triplicated culture groups were planned as: mono-culture sturgeon (M, n=10), duo-culture sturgeon (DM, n=10) and duo-culture trout (DA, n=10), and mono-culture trout (A, n=10). Examination of mono and duo culture of each species, showed neither sturgeon nor trout, was indicated any significance on specific growth rate (SGR) and condition factor (CF). As for final biomasses among groups, no significant differences were recorded (p<0.05).
15
Çanak, Özgür, and Gülşen Timur. "An initial survey on the occurrence of staphylococcal infections in Turkish marine aquaculture (2013–1014)." Journal of Applied Ichthyology 36, no. 6 (2020): 932–41. http://dx.doi.org/10.1111/jai.14141.
Full text
16
Kasapoglu, Nazli, Ekrem Cem Çankırılıgil, Eyüp Çakmak, and Osman Tolga Özel. "Meristic and morphometric characteristics of the Black Sea salmon, Salmo labrax Pallas, 1814 culture line: an endemic species for Eastern Black Sea." Journal of Fisheries 8, no. 3 (2020): 935–39. http://dx.doi.org/10.17017/j.fish.250.
Full textAbstract:
The Black Sea salmon Salmo labrax Pallas, 1814 is an essential species for the Turkish aquaculture sector, given increasing trends of the annual productions. To date, there are few studies on meristic and morphometric characteristics of this species. In this study, the fifth filial generation of the species was specified and studied for meristic and morphometric characteristics. The results obtained in this study were compared with available literature and a similarity was found between the study specimens and wild individuals. The morphological characteristics of any cultured species is valuable especially when a new culture generation is formed and therefore this study outcomes may provide important information to the literature.
17
Olgunoglu, Mine Percin, and Ilkan Ali Olgunoglu. "Assessment of micro-macro elements and fatty acid profiles in Turkish salmon fillets during traditional hot smoking: Implications for human health risks." Quality Assurance and Safety of Crops & Foods 17, no. 2 (2025): 200–212. https://doi.org/10.15586/qas.v17i2.1535.
Full textAbstract:
Turkish salmon, a variant of rainbow trout farmed in Black Sea cages, is a key species in Türkiye’s aquaculture. This study examines the effects of hot smoking on Turkish salmon’s fatty acids, elemental content, and safety indi-cators. Twelve large rainbow trout samples were randomly collected from an international hypermarket in Adana, Türkiye, in February 2024 for analysis post-hot smoking. Hot smoking increased total saturated fatty acids (SFA), particularly C16:0 and C18:0, as well as Zn, K, and Fe (p < 0.05), while significantly decreasing C20:2 (n-6) among polyunsaturated fatty acids (PUFAs) (p < 0.05). Provisional tolerable weekly intake (PTWI) assessments indicated that the estimated weekly intake (EWI) for Cu, Fe, and Zn remained below the PTWI, suggesting no immediate health risks. Total target hazard quotient (∑THQ) values for heavy metals were below 1, indicating no significant risk to adults or children, despite a post-smoking increase. Low levels of As, Pb, Cr, Ni, and Cd (below detection limits) prevented reliable target carcinogenic risk (TR) assessment, highlighting limitations in evaluating trace elements.
18
Atalay, M. A., H. Sevgili, D. Giannetto, et al. "A stakeholders’ perception: Turkish aquaculture sector under COVID-19 pandemic effect with consideration of anthropogenic stressors." Marine Policy 164 (June 2024): 106153. http://dx.doi.org/10.1016/j.marpol.2024.106153.
Full text
19
Orhan, Kılıç. "Current Status, Problems, Solution Suggestions and Future Focuses of Aquaculture in Türkiye." Sustainable Aquatic Research 2, no. 6 (2023): 167–70. https://doi.org/10.5281/zenodo.10418579.
Full textAbstract:
In Türkiye, a significant amount of production is carried out by both fishing (sea and freshwater fisheries) and aquaculture. Aquaculture, especially in recent years, offers great potential for sustainable fish production and economic gain. Gilthead seabream (<em>Sparus aurata</em>) and European seabass (<em>Dicentrarchus labrax</em>) are popular fish especially in the Mediterranean region (Llorente et al., 2020), and are extensively farmed in Türkiye. Since the 2000s, Türkiye has achieved a great increase in gilt-head sea bream and seabass farming, and has become one of the world leaders in this field. By 2020, Türkiye's total sea bream and sea bass production reached over 200,000 tonnes (FEAP, 2022) As of 2020, a total of 422,837 tonnes of fish were produced by aquaculture in the Mediterranean. Seabass (<em>Dicentrarchus labrax</em>) accounted for 49.8%, gilt-head bream (<em>Sparus aurata</em>) 44.7%, meagre (<em>Argyrosomus regius</em>) 2.7%, turbot (<em>Scophthalmus maximus</em>) 2.6%, and Solea (<em>Solea senegelansis</em>) 0.2% of production. 49.3% of these fish were produced by Türkiye, 28.9% by Greece, 10.2% by Spain, 4% by Italy, and 3.5% by Croatia and Cyprus, France, Portugal, respectively (FEAP, 2022). By 2020, a total of 356,318 tonnes of fish were produced by aquaculture in fresh waters in European countries. According to the species, rainbow trout <em>(Oncorhynchus mykiss)</em> was produced at the rate of 77.6%, Eurasian carp (<em>Cyprinus carpio)</em> 17.2%, wels catfish <em>(Silurus glanis) </em>2.2%, European eel <em>(Anguilla anguilla)</em> 1.3%, and others amounting to 1.8% of production. Approximately a quarter (28.8%) of these fish were produced by Türkiye, 13.8% by Poland, 11.4% by France, 10.8% by Italy, 9.6% by Denmark, 5.1% by Hungary, 5.7% by Czech Republic, 5.6% by Spain, 3.9% by Germany, 2.2% in England, and 1.5% in Holland and Croatia, Switzerland, Portugal, Belgium, Sweden, respectively. (FEAP, 2022) In addition to gilt-head bream, sea bass and rainbow trout, Türkiye produces bluefin tuna (<em>Thunnus thynnus</em>) and Turkish salmon (<em>Oncorhynchus mykiss</em>) species. Mussel breeding facilities are also established, and continues to develop. The aquaculture sector in Türkiye has some problems as in every developing aquaculture sector in the world. It is important to analyze these problems and develop appropriate mitigation strategies. At the same time, it is better to incorporate scientific advances into the solution. Extra nutrient and waste pollution may occur in the waters where aquaculture activities are carried out in the world scale. This kind of situation causes problems. Human-caused terrestrial pollution creates problems in aquaculture production areas. Sustainable application and long-term preservation of healthy marine ecosystems are critical.
20
Çakmak, Eyüp, Osman Tolga Özel, Esin Batır, and Derya Evin. "Gökkuşağı alabalığı (Oncorhynchus mykiss Walbaum, 1792) endüstrisinde yeni bir yaklaşım: "Türk Somonu" üretim ve pazarlama eğilimleri." Ege Journal of Fisheries and Aquatic Sciences 41, no. 1 (2024): 69–81. http://dx.doi.org/10.12714/egejfas.41.1.10.
Full textAbstract:
With favorable environmental conditions and the adoption of new technologies, Türkiye has 1703 enterprises producing trout as of 2022. These enterprises collectively produce 167,286 tons of trout per year, including portioned fish (200-250 g), fillet candidates (400-600 g), and fillets (known as Turkish Salmon) (>3000 g). The production chain for Turkish Salmon involves hatcheries, dam lake net cage systems, and offshore net cage systems. There are 680 hatcheries producing trout eggs and fry, with a total annual production of 1,360,029,485 eggs. Additionally, 622 pond/dam lake net cage systems are used for producing Turkish Salmon candidates weighing 400-600 g, with a total production capacity of 163,525,079 kg per year. Offshore net cage systems in the Black Sea region, spread across six provinces, are utilized for Turkish Salmon production. Production planning is underway for two provinces, with a total planned production area of 15,650,000 m2 and a projected capacity of 221,188,000 kg per year. Türkiye is actively involved in the global aquaculture sector, paying close attention to its advancements. Türkiye has a strong egg/juvenile production capacity compared to other countries involved in trout production globally. However, the importation of biotechnology-applied and observed eggs continues, posing biological and genetic risks to Türkiye's natural aquatic areas. Over the past 20 years, Türkiye's trout production has grown significantly, reaching 167,286 tons per year, marking it as a significant food production industry. This success can be attributed to favorable environmental conditions, increasing consumer demand, the adoption of new technologies, and consistent investments. However, the rapid growth in the trout farming sector over the past five years has led to an uncontrollable decline in survival rates. This decline can be attributed to the spread of diseases, incorrect treatment methods, improper breeding management practices, flawed business management, unregulated fish transport, and compromised sanitary and environmental conditions.
21
Simon, M., and O. Polishchuk. "Thematic English-language bibliography on the pecularities of pikeperch (Sander lucioperca Linnaeus, 1758) reproduction and first stages of its ontogenesis." Ribogospodarsʹka nauka Ukraïni., no. 3(69) (September 30, 2024): 210–33. http://dx.doi.org/10.61976/fsu2024.03.210.
Full textAbstract:
Purpose. To create a general bibliographic list of English-language scientific publications devoted to the peculiarities of pikeperch (Sander lucioperca Linnaeus, 1758) reproduction in natural and artificial conditions using various technologies as well as to briefly highlight English-language professional sources, in which the main attention is paid to the specifics of pikeperch development in the first stages of ontogenesis — starting from embryonic development and ending with the age-0+. Methodology. An interdisciplinary approach was used to create this thematic English-language bibliography. Its was based on the practical application of the principles of analytics and systematics. In turn, the limits of applicability of the latter were outlined by holistic and selective methods. The actual bibliographic core consists of sources that are found in the vast majority on the Internet, mostly with free access to the full texts. Findings. A thematic bibliography of 149 English-language sources is included. All of them are placed in alphabetical order by author or title and are drawn in accordance with the requirements of the State Standard of Ukraine (DSTU 8302:2015 “Information and documentation. Bibliographic reference. General provisions and rules of compilation” with amendments — UKND code 01.140.40) and the most common international standard (APA style). The absolute majority of the mentioned sources were published in the last 25 years in well-known international journals(«Aquaculture International», “Aquaculture Report”, “Aquatic Research”, “Biologia”, “Czech Journal of Animal Science”, “Ecology of Freshwater Fish”, “Fish Physiology and Biochemistry”, “Journal of Applied Ichthyology”, “Knowledge and Management of Aquatic Ecosystems”, “North American Journal of Aquaculture”, “Turkish Journal of Fisheries and Aquatic Sciences”, etc.). Practical Value. The presented thematic English-language bibliography can be used in educational, research, organizational and other types of activities related to the reproduction and preservation of aquatic living biological resources in Ukraine and in other countries of the world. The sources given in it will deepen and supplement the knowledge of scientists and producers regarding the peculiarities of reproduction and ontogenesis of pikeperch at the stages from gastrula to the age-0+. Keywords: pikeperch (Sander lucioperca Linnaeus, 1758), aquaculture, reproduction, embryogenesis, ontogenesis, larvae, juvenile, yearlings.
22
Ollee, Bibi Aaishah, and Özkan Özden. "The effect of additives on the shelf life of processed trout eggs." Aquatic Research 4, no. 4 (2021): 331–42. http://dx.doi.org/10.3153/ar21028.
Full textAbstract:
The fact that the diversity of species in the aquaculture sector is too low to compare with natural resources causes regional or excessive/unbalanced price decreases in aquaculture depending on supply and demand. In contrast to these price decreases, portion fish production costs are increasing year by year. This situation affects trout prices especially in Turkey, which is the biggest producer in Europe. It is important to develop delicate (tasty-delicate) products with a long shelf life for the Turkish consumer market. In this study, the effects of natural and synthetic additives were investigated to determine the longer shelf life of processed rainbow trout eggs. In this study, rainbow trout eggs obtained by stripping were cleaned with 10% brine, followed by dry salting (7.5%) for 40 hours. Then they were washed with 5% salt brine, left untreated (control) after drying, and divided into 6 groups, which were treated with 1% liquid smoke, thyme, lemon, flax, or grapeseed oils. The rainbow trout eggs were placed in glass jars and stored under refrigerator conditions without heat treatment. According to the sensory analysis results of the liquid smoke and essential oil applied products positive feedback has been received from the panelists. The liquid smoke applied group was the safest group in terms of microbiology and did not lose its consumable properties during the analysis period. The shelf life of processed trout eggs to which grapeseed oil was applied was 50 days, 30 days for the group treated with oregano oil, 10 days for the groups treated with flax and lemon oil.
23
Güney, Osman İnanç, and Levent Sangün. "Seafood Consumption Attributes and Buying Behaviours According to the Generations: A Study on Millennial Generation in Turkish Market." Turkish Journal of Agriculture - Food Science and Technology 5, no. 12 (2017): 1604. http://dx.doi.org/10.24925/turjaf.v5i12.1604-1608.1600.
Full textAbstract:
This paper focus on the seafood consumption attitudes and behaviours of the millennials (Generation Y) and non-millennials (Generation X, Baby Boomers and Silent Generation) comparatively. The data was collected from a face to face survey which was applied to randomly select 407 individuals in the city of Adana, Turkey in November 2016. As a result of factor analysis applied in the study, it was found that Millennials was significantly and inversely correlated with consumption of wild fish and freshwater fish. Non-millennial generation was inversely correlated with consumption of marine fish, freshwater fish and mussels and the correlation is insignificant. According to the results of the chi square test, it was determined that Millennials mostly preferred to consume fresh (unprocessed) fish. Mann-Whitney test results show that they value health and nutrition factors for consumption and there is a significant difference between these two factors. Besides, factors mainly effecting their purchase behaviour of seafood are directed to freshness, seasonality, place of purchase and wild-aquaculture product classification and there are significant differences between these factors. The fact that the Millennial’s average response to consumption and purchasing is higher indicates that they are more cautious.
24
Şen, Fazıl, and Abdullah Aksoy. "Chemical and Physical Quality Criteria of Bulakbaşı Stream in Turkey and Usage of Drinking, Fisheries, and Irrigation." Journal of Chemistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/725082.
Full textAbstract:
Water quality parameters were analyzed in Bulakbaşı stream. The in situ measurements and laboratory analyses were made on water samples taken from 4 sampling points on the Bulakbaşı stream monthly. During the study, the average water temperature as 16.3°C, dissolved oxygen (DO) 12.91 mg/L, oxygen saturation (OS) 152.8%, pH 8.25, electrical conductivity (EC) 779.6 μS/cm, salinity 0.435‰, chloride 83.97 mg/L, calcium 56.5 mg/L, magnesium 57.1 mg/L, total hardness 391.1 mg/L CaCO3, carbonate 0 mg/L, bicarbonate 365.95 mg/L, total alkalinity 299.85 mg/L, nitrate 4.74 mg/L, nitrite 20.83 µg/L, ammonium 50.8 µg/L, ammonia 48.3 µg/L, phosphorus 77.5 µg/L, sulfate 57.6 mg/L, potassium 4.52 mg/L, copper and aluminum 0.0 µg/L, total iron 10.1 µg/L, zinc 168.2 µg/L, chromium 24 µg/L, manganese 401.7 µg/L, and cyanide 6.79 µg/L were found. According to EU, WHO, and Turkish standards, Bulakbaşı stream is not polluted and it has suitable quality with respect to drinking, aquaculture, and irrigation.
25
NENCIU, Magda, Victor NITA, Carmen NICOLAE, and Bilal AKBULUT. "BOOSTING BIOMASS GAIN AND MEAT QUALITY OF RAINBOW TROUT Oncorhynchus mykiss (Walbaum, 1792) - AN APPROACH FOR FOSTERING ROMANIAN AQUACULTURE." AgroLife Scientific Journal 11, no. 1 (2022): 145–56. http://dx.doi.org/10.17930/agl2022117.
Full textAbstract:
Rainbow trout Oncorhynchus mykiss (Walbaum, 1792) is one of the most widely cultured fish species, with a high market value. Although in the Black Sea there is a well-established tradition of cage farming in Turkish waters, in Romania rainbow trout farming has been limited to inland mountain areas. Whereas there is an increasing interest of Romanian economic operators to engage in sea cage farming, this research aimed at testing the adaptation of rainbow trout to the Romanian Black Sea marine environment, determining its growth rate, establishing the optimal size for transfer to saltwater, and increasing meat quality. The research was performed for 7 months, during the cold season, and comprised two batches of O. mykiss individuals transferred to marine water from a mountain trout farm (with initial mean biomasses of approximately 300 g and 180 g, respectively). Upon completion of the experiment, growth parameters showed values much higher compared to freshwater culture, and the biomass gain was remarkable in both batches (reaching final biomasses of approximately 1,700 g and 1,600 g, respectively), the results indicating smaller fish as best fitted for transfer to marine water. The carotenoid-enriched feed provided to the fish resulted in a highly nutritious meat, with the much-appreciated pink colorization
26
CEMAL, TURAN*, ERGÜDEN DENIZ, GÜRLEK MEVLÜT, and AHMET DOĞDU SERVET. "Checklist of Alien Fish Species in the Turkish Marine Ichthyofauna for Science and Policy Support." Tethys Environmental Science 1, no. 2 (2024): 50–86. https://doi.org/10.5281/zenodo.12771318.
Full textAbstract:
The objective of the present study was to update and consolidate the marine fish (bony and elasmobranch) checklist of Turkey based on supporting evidence. The species that came with natural and/or unnatural distribution routes into Turkish marine waters are included in the list. The current number of alien fish species was 99 belonging to 57 families recorded in the Turkish Seas. The highest number of species (6 species) were found in the Tetradontidae and Gobiidae families which is followed by the Serranidae and Apogonidae families with 5 species, respectively. The Mediterranean coast of Turkey consisted of the highest number of species (88 species), followed by the Aegean Sea with 55 species, the Marmara Sea with 12 species, and the Black Sea with 3 species. Considering the abundance status, 16.0% of the total alien fish species were considered very common, 35.0% common, 23.0% rare, 15.0% very rare, and 11.0% only one specimen of a species has been so far recorded. Only 16 species (16.1%) of the 99 alien fish species have economic value in terms of fishing in Turkey. Regarding their establishment, 60 species (60.6%) are established and 31 species (31.3%) have the potential to be invasive. Moreover, 22 species (22.2%) are poisonous, venomous, or sting. According to their origins, 87% of the alien fish species are of Indo-Pacific origin, 12% are of Tropical Atlantic origin, and 1% North-west Pacific origin. The entry routes of alien fish species found in the Turkish seas are generally via the Suez Canal with a rate of 81%, followed by species passing through the Strait of Gibraltar with a rate of 11%. The species that come through the other entry routes are at a rate of 5% by ship transportation, 2% by Aquarium activities, and 1% by Aquaculture activities. Considering the habitat preference of these alien species, 44% are pelagic species, 14% are benthic species, 13% are rocky area species, 13% are shallow water and reef species, 11% are demersal species and 5% are other habitats, which are mainly distributed in the 0-100 m depth range.
27
Ajmi, Nihed, Muhammed Duman, Hilal Ay, and Izzet Burcin Saticioglu. "Genomic and Pangenomic Insights into Aeromonas salmonicida subsp. oncorhynchi subsp. nov." Pathogens 14, no. 6 (2025): 523. https://doi.org/10.3390/pathogens14060523.
Full textAbstract:
The strain A-9T, isolated from Oncorhynchus mykiss (rainbow trout) in a Turkish aquaculture facility, was characterized through integrated phenotypic, phylogenetic, and genomic analyses. Whole-genome sequencing revealed a 5.21 Mb circular chromosome (GC content: 58.16%) and three plasmids encoding proteins for mobilization and toxin–antitoxin systems. Multilocus phylogenetic analysis (MLPA) using seven housekeeping genes supported the distinct lineage of A-9T. Digital DNA–DNA hybridization (77.6–78.6%) and average nucleotide identity values (96.59–97.58%) confirmed taxonomic divergence from all currently recognized A. salmonicida subspecies. Comparative proteomic and pangenomic analyses identified 328 strain-specific genes, including virulence factors, secretion system components (Type II and Type VI), and efflux-related proteins. Although genes encoding Type III secretion systems and biofilm formation were absent, A-9T harbored a broad virulence gene repertoire and resistance determinants, including OXA-956, cphA5, and FOX-20, supporting a multidrug-resistant phenotype. Based on its genomic, phenotypic, and functional distinctiveness, we propose the novel taxon Aeromonas salmonicida subsp. oncorhynchi subsp. nov. (type strain A-9T = LMG 33538T = DSM 117494T), expanding the taxonomic landscape of the A. salmonicida complex and offering insights into fish-associated bacterial evolution.
28
Şengül, Serkan. "Capital-Labor-Output Nexus in Türkiye's Fisheries Sector: Panel ARDL Analysis." Acta Aquatica Turcica 21, no. 3 (2025): 242–55. https://doi.org/10.22392/actaquatr.1620602.
Full textAbstract:
This study analyzes the relationship between production, labor force and capital investments in the fisheries sector in the Marmara, Aegean, Mediterranean, Western Black Sea and Eastern Black Sea regions of Türkiye and examines their effects on sectoral growth and employment. In the study, total fish production, number of employees in the sector and capital investments (number of vessels) variables are used in the panel data analysis covering the period 2006-2023. According to the results of the analysis, the labor force has a positive and significant effect on production, but the effect of capital on production is negative. This shows that capital investments in the Turkish fisheries sector have not been able to provide the expected productivity growth. Moreover, capital investments are found to support employment by increasing labor demand. The long-run cointegration results reveal a strong equilibrium relationship between the variables. This study contributes to the existing research in the literature and provides strategic recommendations for the development of sustainable growth and productivity policies in Türkiye's fisheries sector. In particular, supporting aquaculture activities, modernizing capital investments and taking regional differences into account are critical for the long-term sustainability of the sector.
29
Horton, T., and B. Okamura. "Cymothoid isopod parasites in aquaculture: a review and case study of a Turkish sea bass (Dicentrarchus labrax) and sea bream (Sparus auratus) farm." Diseases of Aquatic Organisms 46 (2001): 181–88. http://dx.doi.org/10.3354/dao046181.
Full text
30
AKAYLI, T., G. ALBAYRAK, Ç. ÜRKÜ, Ö. ÇANAK, and E. YÖRÜK. "Characterization of Micrococcus luteus and Bacillus marisflavi Recovered from Common Dentex (Dentex dentex) Larviculture System." Mediterranean Marine Science 17, no. 1 (2015): 163. http://dx.doi.org/10.12681/mms.1322.
Full textAbstract:
In this manuscript, thirty yellow-pigmented Gram-positive bacteria were isolated from natural intestine microflora and from sea water around the marine cage of a rearing tank of common dentex (Dentex dentex), in the Aegean Sea on the Turkish coast and were characterized. Eighteen isolates were assigned to the species Micrococcus luteus, the other twelve to the species Bacillus marisflavi. Eight representative strains, six from B. marisflavi and two from M. luteus, were chosen for further 16S rDNA analyses. A pathogenicity assay for the isolated bacterial strains was carried out in rainbow trout and it evidenced absence of pathogenicity in the tested strains. The isolated strains were tested for in vitro antagonistic activity against Listonella anguillarum, a pathogen bacterium diffused in Mediterranean aquaculture and affecting various fish species. The isolated bacterial strains showed antagonistic activity against the pathogenic bacterium, suggesting a possible role of isolates as probiotics. In this study, for the first time, bacterial strains of the species B. marisflavi, known as an environmental species, were recovered in the gut microbiota of a healthy fish. The use of the isolates characterized in this study, mainly the yellow-pigmented bacterium, is suggested as possible probiotics to improve fish health, along with alternative methods of maintaining a healthy environment.
31
KOCATEPE, Demet, Can O. ALTAN, Bengunur CORAPCI, Irfan KESKIN, Bayram KOSTEKL, and Hulya TURAN. "Correlation Between Texture Profile Analysis and Colour Characteristics of Fish: Case study: Black Sea Large Rainbow Trout and Norwegian Salmon." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Food Science and Technology 81, no. 2 (2024): 86–94. http://dx.doi.org/10.15835/buasvmcn-fst:2024.0023.
Full textAbstract:
In this study the colour and texture characteristics of imported Norwegian salmon (NS) and large rainbow trout of different origins (TF: rainbow trout of French origin; TT: rainbow trout of Turkish origin) were investigated. Two sections were then taken from the dorsal and tail zone of the fish and L*, a*, b*, hue, chroma, lightness index, yellowness index and texture profile analysis (TPA) were determined. The L*, a* and b* values measured in the dorsal zone were higher than those measured in the tail zone in all groups. The hue value of dorsal and tail zones of the Norwegian salmon was lower than that of the large rainbow trout, suggesting that the colour of the fish is redder. The tail zones of the fish were harder than the dorsal zones. The significant correlations between the a* and b* values of the dorsal zone of the TF group (r=0.94, p±0.05) and the NX group (r=0.96, p±0.05). The cohesiveness value of the tail zone of the TT group had a positive strong correlation with gumminess (r=0.99, p ±0.05). The correlations found in this study will help the aquaculture industry correlate the colour and texture parameters of salmon and large rainbow trout.
32
Yucel-Gier, G., I. Pazi, F. Kucuksezgin, and F. Kocak. "The composite trophic status index (TRIX) as a potential tool for the regulation of Turkish marine aquaculture as applied to the eastern Aegean coast (Izmir Bay)." Journal of Applied Ichthyology 27, no. 1 (2010): 39–45. http://dx.doi.org/10.1111/j.1439-0426.2010.01576.x.
Full text
33
MAZLUM, Yavuz, and Mehmet Fatih CAN. "Causal relationships among the body-related and egg-related traits in crayfish: A case study on Turkish freshwater crayfish Pontastacus leptodactylus (Astacidae: Decapoda)." Journal of Biometry Studies 4, no. 2 (2024): 56–66. https://doi.org/10.61326/jofbs.v4i2.01.
Full textAbstract:
In this study, the direct and indirect causal relationships among the length, weight, egg diameter, egg weight, and egg quantity of female Pontastacus leptodactylus were analyzed using a path analysis. A total of 79 egg-bearing female crayfish with a total weight (WT; 39.1 ± 16 g) and total length (TL; 109.6 ± 18.1 mm), were sampled from Eğirdir Lake, Türkiye, in 2022 and 2023. Significant direct effects were observed several traits, such as crayfish length and weight, weight and egg diameter, length and egg quantity, egg diameter and egg quantity, weight and egg quantity, length and egg weight, and egg quantity and egg weight (p<0.05). These relationships indicate that larger females tend to produce a higher number of eggs and have greater overall reproductive potential. In contrast, no significant relationships were found between length and egg diameter, weight and egg weight, and egg diameter and egg weight (p>0.05), suggesting that body size may not directly influence egg size in this species. Regarding indirect effects, crayfish length was found to significantly influence egg weight through egg quantity (p<0.05). This suggests that larger females indirectly affect egg weight by producing more eggs. Although the direct effect of egg diameter on egg weight was not significant (p>0.05), its indirect effect of egg diameter on egg weight through egg quantity was significant (p<0.05), indicating that egg diameter plays a role in reproductive output through its influence on egg numbers. The findings of this study contribute to a better understanding of the direct and indirect causal relationships between growth-related traits and egg-related traits in freshwater crayfish. These insights can be utilized in sustainable fisheries management and aquaculture practices by informing selective breeding programs to enhance reproductive success or guiding conservation strategies that protect larger females in natural populations.
34
Yücel, Şennan, Birol Baki, Tuçe Altın, and Gülşen Uzun Gören. "Sinop İli Su Ürünleri Üretiminin Mevcut Durumu ve Türkiye Su Ürünleri Üretimindeki Yeri." Turkish Journal of Agriculture - Food Science and Technology 9, sp (2022): 2437–41. http://dx.doi.org/10.24925/turjaf.v9isp.2437-2441.4844.
Full textAbstract:
In the present study, the production amount in the last five years (2015-2019) of Sinop province, which is located in the Black Sea Region and a significant part of fisheries production is carried out, was evaluated. For this purpose; Sinop Provincial Directorate of Agriculture and Forestry and TUIK (Turkish Statistical Institute) data were used. There are 2.326 commercial fishermen and 444 fishing boats in Sinop province. In the sea area of Sinop, 5 enterprises still produce culture fish in cages. The 2 potential marine culture areas identified in Sinop have an annual production capacity of 32.430 tons (31 enterprises). In addition, 5 bivalves (4.940 tons/year) and 1.000.000 number/year capacity juvenile fish production facilities are at the project stage. The total fisheries production of Sinop Province in 2019 was 34.620,9 tons, and 1.505 tons were obtained from aquaculture. In addition to these, 3.924 tons of fish processing facilities per year, and 35 tons of fish meal and oil processing facilities per year are operated. 66% of sea fish caught in Sinop are anchovy (Engraulis encrasicolus ponticus), 16% sprat (Sprattus sprattus phalericus), 13% horse mackerel (Trachurus trachurus), 3% bluefish (Pomatomus saltatrix) and 2% consists of other species. The most preferred marine fish by the consumers are anchovy (Engraulis encrasicolus ponticus), horse mackerel (Trachurus trachurus), whiting (Merlangus merlangus), red mullet (Mullus barbatus), bluefish (Pomatomus saltatrix), turbot (Psetta maxima) and bonito (Sarda sarda) and sea bream (Sparus aurata), sea bass (Dicentrarchus labrax) and rainbow trout (Oncorhyncus mykiss) are the culture fish species offered for sale throughout the year.
35
KARAHAN, ARZU, BERIVAN TEMIZ, ESRA ÖZTÜRK, JACOB DOUEK, and BARUCH RINKEVICH. "Seven ascidian (Tunicata) species from the North Eastern Mediterranean." Mediterranean Marine Science 24, no. 3 (2023): 545–57. http://dx.doi.org/10.12681/mms.32937.
Full textAbstract:
Members of the tunicates, a subphylum of marine filter-feeder chordates, inhabit all marine and oceanic habitats from the subtidal to the abyssal. Considered the closest relatives to the vertebrates, the tunicates are widely used as model organisms for evo-devo, allorecognition, senescence, and whole-body regeneration studies. However, species boundaries are poorly understood due to the high morphological and genetic plasticity that characterizes many tunicate taxa. Here, we present findings on seven tunicate species (Botrylloides israeliense, Botrylloides sp., Botryllus humilis, Botryllus schlosseri, Symplegma brakenhielmi, Polyclinum constellatum and Didemnum perlucidum) sampled from six Turkish sites at the North Eastern Mediterranean Sea and employed the mitochondrial barcoding marker (COI) for evaluating the relationships among geographically restricted and widely spread ascidian species. Species delimitation was conducted using sequences generated in the current study in addition to sequences obtained from GenBank. General morphological features and colors of colonies were recorded at sampling sites. Then, all Styelidae colonies were attached and cultured on slides in an aquaculture room, enabling the study of other features, such as zooid distributions and sizes, oral tentacle numbers, and life cycles, using stereo and light microscopes. The spicules of formalin-fixed Didemnum perlucidum samples were examined under a light microscope. Then, scientific names were assigned to all species based on the results of the species delimitation and on comparisons of the obtained COI sequences with GenBank sequences. A putative new Botrylloides species (Botrylloides sp.) from the Antalya region was revealed, with a 99% match with the COI gene of another specimen from Saudi Arabia; further waiting for detailed traditional taxonomy.
36
Dirican, Seher. "Rainbow Trout Farming in İmranlı Dam Lake (Turkey): Knowledge, Constraints and Opportunities." International Journal of Forest, Animal And Fisheries Research 6, no. 4 (2022): 01–08. http://dx.doi.org/10.22161/ijfaf.6.4.1.
Full textAbstract:
The Covid-19 pandemic process has clearly demonstrated how important it is to ensure self-sufficiency and sustainability, especially in the production of agricultural and animal products. One of the inland water ecosystems that are important in terms of aquaculture production is dam lakes. In recent years, rainbow trout farming in dam lakes has been widely practiced in Turkey. One of the dam lakes where rainbow trout is grown in cages is İmranlı Dam Lake. The dam lake was built on the Kızılırmak River in Sivas province between 1994-2002. It is very valuable for the country's economy to use the waters of the İmranlı Dam Lake in the cultivation of rainbow trout in cages together with agricultural irrigation. The waters of the İmranlı Dam Lake give an important power to both agriculture and rainbow trout farming. In the İmranlı Dam Lake, 950 tons of rainbow trout and Turkish salmon are grown annually in net cages. The surface of the İmranlı Dam Lake, which has a water capacity of 62.5 million cubic meters and an area of 6.5 square kilometers, located within the borders of İmranlı district, where the air temperature drops to about 25-30 degrees below zero, is completely frozen in the winter season with the effect of cold weather every year. In the İmranlı Dam Lake, which is used to irrigate approximately 11.220 hectares of agricultural land in the summer months and where cage fishing is also carried out, the fish cages are under the ice mass. Rainbow trout can be fed by breaking the ice on the cages. Rainbow trout, which are grown in difficult conditions in the İmranlı Dam Lake, are highly preferred due to both the air and the coldness of the water. The rainbow trout farm, which was established in the İmranlı Dam Lake in 2010, has reached an extremely important position in terms of modern production infrastructure, quality and meeting the animal protein needs of people.
37
Ünal, Vahdet, and Huriye Göncüoglu-Bodur. "Analysis of the third generation buy-back program for fishing vessels in Turkey." Ege Journal of Fisheries and Aquatic Sciences 37, no. 3 (2020): 251–58. http://dx.doi.org/10.12714/egejfas.37.3.07.
Full textAbstract:
The third buy-back program in Turkey entered into force in 2014 with the Notice No. 29023 of the Official Gazette titled “Notice of Agricultural Support-Official Notice of Decommissioning of Fishing Vessels”, issued by the Directorate of Fishery and Aquaculture of the Ministry of Agriculture and Forestry. This study is an evaluation of the third generation of the program. In this study, simple random sampling method was used to interview 89 vessel owners out of a total number of 191 vessels which are longer than 10 meters. The biggest number of buy-backs was in Marmara Region (38%), followed by the Agean (15%) and the Mediterranean (15%) regions. Most of the decommissioned vessels were 10-12 meters in length. The only fisher that benefited from the program was the owner of a vessel longer than 31 meters. The remaining 9 vessels were longer than 12 meters and shorter than 23 meters. In the scope of the program, 95% of the buy-back vessels are in the small-scale category. Among those, 41% of the vessels were in use for 3-90 days, while 4% had never been used within the year 2015. However, 60% of the owners who handed over their vessels also owned a second boat. Although 85% of the fishers employed a crew on-board and 73% of their crew were not family members, the fact that the program lacks a component for the crew can also be criticised. In conclusion; the third generation buy-back program bought a total of 191 vessels for 22.5 Million Turkish Liras ($8.3M US). However, since 77% of the interviewees continued fishing with their second boat and 26% bought a new boat with the support they were granted. Therefore all details of the results and the success of the buy-back programs should be evaluated by the authorities and future programs should be put into practice with necessary amendments.
38
Pinky, Kaur, and Pandey Sneha. "EFFECT ON MARKETABILITY OF ORNAMENTAL FISHES DUE TO PARASITIC INFECTION." Biolife 2, no. 4 (2022): 1094–99. https://doi.org/10.5281/zenodo.7228181.
Full textAbstract:
<strong>ABSTRACT</strong> Present study was carried out to reveal the prevalent and unforeseen parasitic infection in commercially available ornamental fishes which may credit to their marketable value. Seven different species of ornamental fishes namely <em>Carassius auratus</em> (Gold Fish and Black Moor Gold), <em>Cyprinus carpio</em> (Koi Carp), <em>Poecilia reticulate</em> (Guppy), <em>Rasbora daniconius </em>(Slender Rasbora), <em>Puntius conchonicus </em>(Rosy Barbs), <em>Trichogaster lasius</em> (Brass gold) were screened for the occurrence of infection. <em>Cyprinus carpio</em> showed maximum infection caused by <em>Argulus</em> (Crustacean: Branchiuran) intensity=8-12 per fish. <em>Argulus</em> was observed as a primary infection which was followed by bacterial infection (dropsy) as secondary infection. While minimum infection was caused by <em>Lernaea </em>in<em> Carassius auratus</em> (intensity=1 per fish)<em>.</em> <strong>Keywords – </strong><em>Argulus,</em> ornamental fishes, parasitic, <em>Lernaea</em> <strong>REFERENCES</strong> Abd el-Mohsen, H.Mohamed and Amany M. (2013). Studies on argulosis in some freshwater ornamental fishes with special reference to treatment trials. New York Science Journal, 6(10) 37-41. Bauer R. (1991) Erkrankungender Aquarien fishe.Verlag Paul Parey. Berlin und Hamburg. Buchmann K, Bresciani J. (1997). Parasitic infections in pond-reared rainbow trout <em>Oncorhynchus mykiss </em>in Denmark. Int Res Dis Aquat Org. 28:125-138. Chowdhury, M. B. R. and M. A. Baqui, (1997). Bacterial flora in farmed carp (Labeo rohita) in Bangladesh. <em>In</em>: Disease in Asian Aquaculture III (eds. T. Flegel and I. H. MacRae), Fish Health Section, Asian Fisheries Society, Manila. pp. 101-105. Durborow, R. M., Mitchell, A.J., Crosby, M.D (1998). <em>Ich (White Spot Disease)</em>. no. 476.<strong>, </strong>NY: SRAC Publ. Eissa, I.A.M., (2002). Parasitic fish diseases in Egypt. El-Nahda El-Arabia Publisher, 32 Abd El-Khalek Tharwat street, Cairo, Egypt. Eissa,I.A.M.,and Mohamed,A.H. (2004): Studies on argulosis among some ornamentalfishes with special reference to treatment, SCVMJ, Vll (1),211-216. Geldiay R, Balik S. (1974). Mainly endo and ecto-parasites observed on the fresh water fish in Turkey (in Tukish). Ege Univ. Matbaası, Izmir. Hoffman, G. L. (1999). Parasites of North American freshwater fishes. 2nd edition, Ithaca (NY), Cornell University Press, 539 pp. Kayis, S., Ozcelep, T., Capkin, E., Altinok, I. (2009). Protozoan and Metazoan Parasites of Cultured Fish in Turkey and their Applied Treatments: A case study <em>The Israeli Journal of Aquaculture – Bamidgeh 61(2), </em>93-102. Koyuncu, E. (2009). Parasites of ornamental fish in Turkey: A case study. <em>Bull. Eur. Ass. Fish Pathol</em>. 29 (1), 25-27. Koyuncu, E., Cengizler. I., (2002).Mersin Bölge-sinde yetiştiriciliği yapılan bazı akvaryum balıkları (Poecilidae)’ında rastlanan protozoan ektoparazitler, <em>Ege Üniversitesi</em>, <em>Jour-nal of Fisheries and Aquatic Science, </em>19: 293-301. Krier, J.P. & Baker, J.R. <strong>(</strong>1987). <em>Parasitic Protozoa</em>. Allen and Unwin, 241 Australia.(pp.1-153), NY:Academic Pres. Lom, J., Schubert, G., (1983). Ultrastructural study of <em>Piscinoodinium pillulare </em>(Schaper-claus, 1954) Lom, 1981 with special emphasis on its attachment to the fish host, <em>Journal of Fish Diseases</em>, <strong>6</strong>: 411-428. Molnar K, Szekely C. (1998).Occurrence of skrjabillanid nematodes in fishes of Hungary and in the intermediate host, <em>Argulus foliaceus </em>L. Acta Vet Hung. 1998; 46:451. Mousavi, H.E.; Behtash, F.; Bashman, M.R.; Mirzargar, S.S.; Shayan, P and Rahmatiholasoo, H. (2011): Study of <em>Argulus spp</em>. infestation rate in Goldfish, <em>Carassius auratus </em>(Linnaeus, 1758) in Iran. Human & Veterinary Medicine International Journal of the Bioflux Society. Volume 3, Issue 3.198-204. Noga, E. J. (2010): Fish disease Diagnosis and Treatment.2nd Edition Mosby-yearbook, Inc. Notash, S. (2013) Study on prevalence of <em>Argulus</em> in Goldfishes (<em>Carassius auratus</em>) of east Azerbaijan province of Iran. Annals of Biological Research, 3(7):3444-3447. Roberts, H.E. (2010)<strong>. </strong>Fundamentals of Ornamental Fish Health<strong>, </strong>1. Edition ed. 28-108pp), USA, NY: Blackwell Publ. Saglam, N., (1992).Some external parasites on Cyprinids in Keban Dam Lake, Master The-sis, Fırat University, Science Instution, Elazığ, Türkiye. Sarieyyupoglu M, Saglam N. (1991). <em>Ergasilus sieboldi </em>and <em>Argulus foliaceus </em>observed on <em>Capoeta trutta </em>caught in the polluted region of Keban Dam Lake (in Turkish). E U J Fish Aquat Sci. 8:143-154. Scholz, T. <strong>(</strong>1999). Parasites in cultured and feral fish: A case study. <em>Vet. Parasitol.</em>, 84:317-335. Smith, S. A., Roberts, H. E., (2010). Parasites of fish. In: Fundamentals of Ornamental Fish Health. Roberts H. E. (ed). Hoboken (NJ): Wiley-Blackwell, pp. 102-112. Toksen, E. (2006). <em>Argulus foliacesus </em>(Crustacea: Branchiura) infestation on oscar, <em>Astronotus ocellatus</em> (Cuvier, 1829) and its treatment :A case study. <em>E.U. J. Fish. Aquat. Sci.</em>, 23:177-179. Vimalraj P.G, R. Sridhar and M.G. Jayathangaraj. (2012). <em>Lernaea Cyprinacea </em>(Anchor Worm) Infestation in Gold Fishes. Tamilnadu J. Veterinary and Animal sciences, 8(2), p.108 Woo,P.T. (1995): Fish diseases and disorders. Protozoan and metazoan infections V1, 486-494. Yildiz K, Kumantas A. (2002). <em>Argulus foliaceus </em>infection in a goldfish <em>(Carassius auratus). </em>Isr J Vet Med. 57(3):118-120
39
Mehmet, Fatih Huseyinoglu, and Tola Anagara Nihil. "A Comparative Analysis of Inland Fishing in Nigeria and Türkiye." Journal of Wildlife and Biodiversity 7, no. X (2023): X. https://doi.org/10.5281/zenodo.7604022.
Full textAbstract:
Fishing is an ancient activity with its involvement being traced back to the stone age; it is also an important economic activity in the nations of the world, supplying about 60% of the world’s protein as well as creating jobs and income revenue, especially in developing nations. Three sources of fishery exist in the world: inland, marine, and aquaculture. Global aquaculture being different from capture fisheries of marine and inland has experienced rapid growth in global fishery production since 2007, producing 85.5 million metric tons in 2021, with capture fishery producing 92.6 million metric tons. While different species of fish exist in the nation’s waters, only a few are of economic value, with most of the fish caught for food gotten from inland fishing, some are food for animals, also inland fishing of ancient times are for recreational purposes. This study focuses on drawing comparisons between inland fishing in Nigeria and Turkiye. Secondary quantitative method was used in the data collection process which was in the form of the scientific and common names of the fish species in the inland waters of the countries, their status/occurrence in the waters, their location(s), fishing practices of the countries and a ten- year rate of capture fishery production of the inland waters between the years 2011 and 2020. The inland fishing in both countries was compared based on these elements to conclude that just as the countries up for comparison are far apart based on their location (existing on two different continents), so is the inland fishing of both countries, having very few similarities. The inland fishing of both nations differs in great magnitude, having different kinds of species in their waters, as well as different fishing practices, and different rates of capture inland fishing production.
40
Aydın, İlhan, Rafet Çağrı Öztürk, Orhan Tufan Eroldoğan, et al. "An In‐Depth Analysis of the Finfish Aquaculture in Türkiye: Current Status, Challenges, and Future Prospects." Reviews in Aquaculture 17, no. 2 (2025). https://doi.org/10.1111/raq.70010.
Full textAbstract:
ABSTRACTAquaculture emerges as a crucial solution for addressing the global food shortage of an estimated 10 billion people by 2050. In Türkiye, aquaculture plays a significant role in supporting the economy and ensuring food security. Over the past two decades, finfish production in Türkiye surged from 61,163 to 547,505 t, generating $1.7 billion in export revenue across over 100 countries. This growth has been driven by technological advancements, robust governmental support, and increasing global demand for aquaculture products. However, the sector also faces persistent challenges, including the need to enhance sustainability, mitigate ecological impacts, and manage finite resources. As Europe's leading fish producer, the Turkish aquaculture sector must continue to innovate and expand to meet the demands of a growing population. Despite the expanding research on Turkish finfish aquaculture, there is no comprehensive review that consolidates both scientific progress and sectoral developments. This study fills that void by combining a bibliometric analysis of 1958 scientific publications from 1983 to 2023 with an in‐depth sectoral evaluation, providing a holistic understanding of the Turkish aquaculture sector. The bibliometric analysis highlights key research areas, trends, and knowledge gaps, while the sectoral overview examines production trends, dynamics of the feed industry, technological innovations, and economic factors. It also addresses challenges such as climate change impacts, reliance on imported feed ingredients, and disease issues, discussing potential avenues for sustainable growth through innovation, policy reforms, and technological integration. This review serves as a valuable resource for researchers, policymakers, and industry stakeholders, offering insights into the current state and future directions of finfish aquaculture in Türkiye.
41
Rad, Ferit, Tevfik Aytemiz, and İsa Şen. "A Prelimnary Survey on Perception of Turkish Aquaculture Stakeholders on Climate Change-Aquaculture Interactions." June 30, 2018. https://doi.org/10.4194/2618-6381-v18_1_08.
Full textAbstract:
Climate change is expected to have direct and indirect impacts on aquaculture sector. Significant socio-economic role of aquaculture in terms of job and income generation as well as food security and economic development calls the need for a proactive approach for development of adaptation and mitigation policies towards climate change and aquaculture interactions. Awareness building and understanding the perceptions of aquaculture stakeholders regarding the impact of climate change on aquaculture are important pillars of developing adaptation and/or mitigation policies. This study is a preliminary assessment of Turkish aquaculture stakeholders’ perception regarding climate change-aquaculture interactions, which was carried out within the activities of EU funded CERES project (Climate Change and European Aquatic Resources). A semi-structured questionnaire developed by CERES project for this purpose was used to collect data through face to face interviews. For statistical analysis of the collected data, both descriptive and inferential methods were used. Majority of stakeholders participating in the survey believed that most of the performance parameters including feed conversion ratio (FCR), fish health, survival rate and production costs, will potentially be affected negatively by climate change.
42
Şen, İsa, Ferit Rad, and Tevfik Aytemiz. "Perceptions of Aquaculture Sector Stakeholders Regarding Climate Change." December 1, 2017. https://doi.org/10.17693/Yunusae.V17i31121.329790.
Full textAbstract:
Aquaculture sector is a significant food producing sector contributing to food security, economic growth and employment. Climate change-aquaculture interaction is inevitable and attempts to develop necessary adaptation and mitigation policy and strategies are crucial for future of the sector. Assessing the perception of stakeholders regarding climate change and its possible impacts on aquaculture at sectoral followed by awareness building are fundamental issues which need to be addressed before formulating appropriate adaptation and mitigation policies and tools. This preliminary survey was conducted to assess the general perception of Turkish stakeholders towards climate change and its envisaged interactions with aquaculture at sectoral level. Results reveal that in general stakeholders are aware of climate change and its potential impacts of aquaculture but do not perceive it as a major priority or challange for the sector.
43
Bat, Levent, Elif Arici, Ayşah Öztekin, and Fatih Şahin. "Farmed Turkish salmon: Toxic metals and health threat." Foods and Raw Materials, July 29, 2021, 317–23. http://dx.doi.org/10.21603/2308-4057-2021-2-317-323.
Full textAbstract:
Introduction. Toxic metals in fish, even at low levels, have negative consequences for human health. Even essential metals pose a health threat if consumed in certain quantities. Mercury, cadmium, and lead are the most frequent metals containing in fish. The research objective was to inspect the quality of aquaculture fish found in most major grocery chains across Turkey.
 Study objects and methods. The present research featured the quantities of Zn, Fe, Cu, Al, Pb, Hg, and Cd in Turkish salmon. The sampling took place between February and June 2019. The cumulative carcinogenic and non-carcinogenic risk for consumers was evaluated based on trace element levels in a prospective health risk assessment using the U.S. EPA model of lifetime exposure.
 Results and discussion. Fe proved to be the most abundant element in fish fillets, followed by Zn and Cu. Other elements appeared to be far below the permissible values, namely Al ≤ 0.5, Cd ≤ 0.02, Pb, and Hg ≤ 0.05. All the trace elements detected in Turkish salmon were below the reference dose values. The percent contribution to total risk by Fe, Cu, and Zn were 34.20, 24.80, and 41.01%, respectively. The hazard index was ≤ 1. The contamination of aquaculture fish fillet proved insignificant, and the carcinogenic risk was entirely negligible.
 Conclusion. The research revealed no hazardous trace elements, and their cumulative effects were not indicated in the hazardous index.
44
"INTEGRATING INTENSIVE AQUACULTURE OF CHONDRACANTHUS EXASPERATUS, THE TURKISH TOWEL SEAWEED." Journal of Phycology 37 (September 24, 2008): 51–52. http://dx.doi.org/10.1111/j.1529-8817.2001.jpy37303-135.x.
Full text
45
Yılmaz, Sevdan, Sebahattin Ergün, Murat Yiğit, and Ebru Yılmaz. "An Extensive Review on the Use of Feed Additives Against Fish Diseases and Improvement of Health Status of Fish in Turkish Aquaculture Sector." Aquaculture Studies 22, no. 3 (2022). http://dx.doi.org/10.4194/aquast710.
Full textAbstract:
Aquaculture is the second-fastest-growing sector in the world after informatics and its. Average growth of aquaculture is annually ~8.8% over the last 30 years. Turkey has great potential in terms of fish production and the number of fish farms started to increase rapidly. Fish production in intensive culture conditions has enlarged possible threats of contagious disease outbreaks due to high stocking densities, water quality or environmental gradient, etc., as well as the combination of all these factors together. Depending on animal husbandry situations and organizational conditions, gradation of the aquatic surroundings and outbreaks of bacteriological diseases may well cause production losses around 30-40% in aquaculture facilities. Some fish diseases reported most repeatedly in Turkish aquaculture facilities are Vibriosis, Furunculosis, Streptococcosis, Lactococcosis, Aeromonas septicemia, Yersiniosis, Photobacteriosis and Flavobacteriosis. Antibiotics, disinfectants and chemotherapeutics used for the prevention and treatment of diseases result in residual antibiotics and chemicals in fish products, microorganisms resistant to antibiotics and damages to the aquatic environment and human health. This situation has led researchers to use alternative feed additives in fish diets such as medicinal plant, herbal extracts, phytochemicals, plant secondary metabolites, immunostimulants and probiotics. This review includes research conducted in Turkey between the years 2001 and 2020, and aims to summarize the findings regarding the use of medicinal plant, herbal extracts, phytochemicals, plant secondary metabolites and immunostimulants in fish feed to prevent and treat diseases, improve immunity, increase disease resistance, and reduce stress in fish towards a better management and best aquaculture practice for the sustainability of the growing aquaculture industry in the region and worldwide.
46
Tolon, Mustafa Tolga. "A price index of farmed fish: The case of Turkish aquaculture market." Aquaculture Economics & Management, January 19, 2023, 1–15. http://dx.doi.org/10.1080/13657305.2023.2168089.
Full text
47
BAYRAKLI, Barış. "Utilization of Fish By-Products for Sustainable Aquaculture: Nutritional Analysis of Fishmeal derived from the By-Products of Oncorhynchus mykiss." Menba Kastamonu Üniversitesi Su Ürünleri Fakültesi Dergisi, December 20, 2023. http://dx.doi.org/10.58626/menba.1360875.
Full textAbstract:
This study aims to investigate the nutritional composition of fishmeal derived from the by-products of Oncorhynchus mykiss, commonly known as Turkish Salmon, cultured in the Black Sea. The findings indicate that the obtained fishmeal possesses high crude protein content (65.22 ± 0.118%) and crude fat content (9.28 ± 0.139%). Additionally, the energy value of the fishmeal was determined to be 358.75 ± 3.633 kcal/g. Mineral substance analysis reveals significant levels of calcium, phosphorus, and magnesium in the fishmeal. Heavy metal analysis results indicate arsenic, lead, cadmium, and mercury contents of 3.51 ± 0.470, 1.46 ± 0.136, 0.15 ± 0.004, and 0.007 ± 0.012 mg/kg, respectively. These findings suggest that fishmeal derived from processing residues of Turkish Salmon offers high nutritional value and could be considered as an alternative raw material for sustainable aquaculture. This study is expected to contribute significantly to waste management and sustainability efforts in the fish processing industry.
48
Naz, Mehmet, Halil Şenol, Emine Şükran Okudan, Selin Sayın, Belma Konuklugil, and Gülaçtı Topçu. "Analyzing eight Turkish macroalgae: Fatty acids, proteins, and in silico biological activity profiles." European Journal of Lipid Science and Technology, September 23, 2024. http://dx.doi.org/10.1002/ejlt.202400025.
Full textAbstract:
AbstractThis study investigated the fatty acid (FA) compositions and proteins’ molecular weight profiles (MWP) of eight macroalgae species collected from the Antalya and Çanakkale in Turkiye: three red (Liagora viscida, Laurencia obtusa, Palisada perforata), three brown (Stypopodium schimperi, Cladostephus spongiosus, Halopteris scoparia), and two green (Caulerpa scalpelliformis, Penicillus capitatus). The potential bioactivities of the FAs were evaluated by in silico studies, focusing on anti‐cholinesterase, antioxidant, and cardioprotective effects. The predominant FA across all species was palmitic acid comprising over 50% of total FAs in most species. Docosahexaenoic acid (DHA) was abundant in seven of the eight species. Significant variations in MWPs were observed among species, with values ranging from <2532 to >67 000 Da. Brown algae generally exhibited higher MWP levels compared to red and green algae which showed distinctive profiles. In silico studies revealed that DHA exhibited the strongest binding affinity toward lipoxygenase acetylcholinesterase and butyrylcholinesterase enzymes with −8.829, −10.636, and −7.984 kcal mol−1 docking scores, respectively. DHA demonstrated significant interactions with key residues, forming hydrogen bonds critical for enzymatic inhibition and potential therapeutic effects. Molecular dynamics simulations confirmed the stability of DHA–protein complexes with low root mean square deviation and root mean square fluctuation values. This comprehensive analysis underscores the nutritional richness and potential bioactivity of macroalgae, particularly in terms of FA composition and protein profiles. The findings suggest that macroalgae, rich in DHA and other beneficial FAs, hold promise for pharmaceutical and nutraceutical applications, warranting further exploration into their therapeutic potential.Practical Applications: This study explores the fatty acid compositions and protein MWPs of eight macroalgae from Turkey's coasts. The findings suggest potential applications in aquaculture feeds and functional foods. Notably, DHA stands out for its antioxidant, cardioprotective, and cholinesterase inhibitor properties, making these macroalgae promising sources for obtaining DHA. The research supports practical applications in developing nutritional supplements, pharmaceuticals, and aquaculture practices, harnessing the bioactive potential of these marine resources for human health and industry.
49
Kaplan, M., K. Pekmez, A. A. Çağırgan, et al. "Survey on Betanodavirus in Wild Fish Species in the Turkish Coastlines of the Mediterranean Sea and Molecular Characterization: detecting different genotypes from different fish in different locations." Bulletin of the European Association of Fish Pathologists 43, no. 2 (2023). http://dx.doi.org/10.48045/001c.74914.
Full textAbstract:
Viral nervous necrosis is a viral disease caused by betanodavirus causing deaths and epidemics in wild or farmed sea fish, especially in juveniles. Betanodavirus has been detected in farmed European seabass and gilthead seabream in Turkey. However, there are no studies on the presence of betanodavirus in wildlife along the Turkish Mediterranean coast. This study aimed to investigate the presence of betanodavirus in wild fish along the Turkish coast of the Mediterranean and to characterize isolates using molecular tools. Hence, 400 fish belonging to 27 different wild species were caught and tested using real-time RT‒PCR. The betanodavirus genome was detected in red mullets (25/50) and garfish (2/4) and identified as RGNNV and RGNNV/SJNNV genotype, respectively according to partial genome sequencing of the RNA1 and RNA2 segments. Phylogenetic analysis showed that isolated viruses were similar to isolates collected from other parts of the Mediterranean Sea and China, India, and Japan. The results of the studies show that different genotypes are circulating in the studied region in different species. These findings indicates that more research on wildlife, both around the farm and in other regions, are needed to prevent spreading of the virus to aquaculture facilities.
50
Dağtekin, Büket Buşra. "Value Chain of Aquaculture In Sea Cages on The Black Sea Coast of Türkiye." Journal of Anatolian Environmental and Animal Sciences, April 29, 2024. http://dx.doi.org/10.35229/jaes.1370526.
Full textAbstract:
Aquaculture is one of the most important sectors in Turkiye's exports. The export value increases annually. In parallel with the developments in aquaculture production and processing technologies, there is a significant increase in aquaculture exports. The increased production and export of aquaculture products carry future challenges that need to be properly tackled to ensure the competitiveness and economic sustainability of the sector. The main objectives of this research were to understand the value chains of aquaculture products, identify production costs, and make a general analysis of the market in the Black Sea Region. Random sampling was used to ensure that farmers were equally represented in the survey. To fill this purpose, 16 farmers were interviewed from four sea cage location sites. Furthermore, fish traders and respected stakeholders were interviewed. It is possible to divide the cage farming in the sea cages in the Turkish coastal water of the Black Sea into 3 groups according to their size with a capacity of 250 tons/year (small), between 501-999 tons (medium), and more than 1000 tons/year. According to the results, 75% of the fish produced in cages is trout, and 25% is sea bass in the Black Sea. The most important expense items of enterprises consist of variable costs. Among the variable costs, the purchase of fry fish, feed purchase, and labor costs constitute the most important expenditure items. Among the fixed costs, the most important expense is depreciation costs. The unit cost of one kg of fish varies between 2.5-3.0 euros. Considering that the trout and sea bass in the Black Sea are at the level of 3.5 Euro, the profit rate of the enterprises is between these levels. Recently, since trout from the Black Sea has been exported to the Far East Country (particularly Japan), its price has also increased. In 2018, the average retail price (including VAT) and medium selling price of sea bass and trout were at a level of 5.24 and 5.34 Euros respectively. Despite all these positive developments, climate change continues to pose a threat to the emergence of diseases and marketing problems.