Relevant bibliographies by topics / Fish and Aquacultural Science

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Fish and Aquacultural Science'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Fish and Aquacultural Science"

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Bhattarai, Kiran K., Chongrak Polprasert, and Bindu N. Lohani. "Models for Aquacultural Treatment of Septage." Water Science and Technology 18, no. 7-8 (July 1, 1986): 103–12. http://dx.doi.org/10.2166/wst.1986.0280.

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The research programme on aquacultural treatment of nightsoil has been conducted at the Asian Institute of Technology (AIT) for about 10 years. This paper emphasizes only the research scheme in which nightsoil is fed directly into single-stage, non-flow-through ponds for the production of algae and fish Tilapia (Qreochromisniloticus). The culture of herbivorous fish such as Tilapia in the same pond to graze on the algae is practical, in order to produce the fish protein biomass which is easily harvestable for animal (or human) food. Dynamic and empirical models describing the performance of nightsoil-fed fish ponds were developed to simulate the temporal changes of various physico-chemical and biological parameters including dissolved oxygen, carbon dioxide, bacteria, algae, and fish growth. These models were based on the basic mechanisms and phenomena occurring in the ponds, and the simulated results calculated from the Continuous System Modelling Programme (CSMP) computer package available at the AIT Regional Computer Center.
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Klíma, Ondřej, Radovan Kopp, Lenka Hadašová, and Jan Mareš. "Fin condition of fish kept in aquacultural systems." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 61, no. 6 (2013): 1907–16. http://dx.doi.org/10.11118/actaun201361061907.

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Fish fins seem to be a suitable indicator of welfare state. In natural conditions there is no worsenig of fin condition. Damaged fins occur in aquacultural systems only. They are characterized by shortening size, frayed rays, disturbing of fin tissue, lesions and necrosis creation. Possible causes are aggressive behaviour of fish, inapropriately chosen size of stocking density, feeding management, diet composition, rearing system, water quality, thoughtless manipulation with fish and bacterial infections. Mostly, dorsal and pectoral fins are damaged in salmonids (not in percids). For evaluation there are all fins except adipose fin used. Lenght of fins is measured and the visual aspect is assessed. Mostly used method is “Relative fin length”. Adjustment of rearing conditions, feeding ratio increasing, propriate diet composition (amino acids and minerals), rearing fish in duoculture, preventive baths in chloramine–T, prefering of ground canals and fishponds can conduce to improving of fin condition. Bad fish condition worsens swimming and it can rule the saleability of fish. Aquacultural systems do not allow natural fish farming. That is why it is necessary to assess welfare of kept fish. The fin appearance informs about condition of rearing environment.
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Smith, Daniel Wilkins. "Biological Control of Excessive Phytoplankton Growth and the Enhancement of Aquacultural Production." Canadian Journal of Fisheries and Aquatic Sciences 42, no. 12 (December 1, 1985): 1940–45. http://dx.doi.org/10.1139/f85-240.

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A method is proposed to control phytoplankton biomass in aquacultural ponds, using both zooplankton and filter-feeding silver carp (Hypophthalmichthys molitrix). The technique maintains co-existence of zooplankton and filter-feeding fish by excluding the fish from part of the water column. Zooplankton, which feed on smaller algal species, and silver carp, which feed on large algae and zooplankton, together can consume all sizes of phytoplankton, thus controlling algal biomass. This technique was tested in 1000-L tanks, some containing channel catfish (Ictalurus punctatus) alone, some both catfish and silver carp, and others catfish and silver carp with a zooplankton refuge. The refuge permitted coexistence of high densities of large zooplankters with the filter-feeding fish. This combination of filter-feeders reduced algal biomass by as much as 99%, increased phytoplankton diversity, and showed a trend toward improved silver carp growth compared with treatments without a refuge. The proposed technique could be applied to both intensive and extensive aquacultural systems.
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Schmidt, Anja S., Morten S. Bruun, Inger Dalsgaard, Karl Pedersen, and Jens L. Larsen. "Occurrence of Antimicrobial Resistance in Fish-Pathogenic and Environmental Bacteria Associated with Four Danish Rainbow Trout Farms." Applied and Environmental Microbiology 66, no. 11 (November 1, 2000): 4908–15. http://dx.doi.org/10.1128/aem.66.11.4908-4915.2000.

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ABSTRACT Surveillance of bacterial susceptibility to five antimicrobial agents was performed during a 1-year period in and around four freshwater fish farms situated along a stream in western Denmark. Besides assessing the levels of antibiotic resistance among the culturable fraction of microorganisms in fish, water, and sediment samples, two major fish pathogens (88Flavobacterium psychrophilum isolates and 134Yersinia ruckeri isolates) and 313 motileAeromonas isolates, representing a group of ubiquitous aquatic bacteria, were isolated from the same samples. MICs were obtained applying a standardized agar dilution method. A markedly decreased susceptibility of F. psychrophilum isolates to most antimicrobial agents presently available for use in Danish aquaculture was detected, while the collected Y. ruckeriisolates remained largely sensitive to all therapeutic substances. Comparing the inlet and outlet samples, the increase of the antibiotic-resistant proportions observed among the culturable microflora was more pronounced and statistically significant among the motile aeromonads. High levels of individual and multiple antimicrobial resistances were demonstrated within the collected flavobacteria and aeromonads, thus indicating a substantial impact of fish farming on several groups of bacteria associated with aquacultural environments.
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Shereif, M. M., M. El-S. Easa, M. I. El-Samra, and K. H. Mancy. "A demonstration of wastewater treatment for reuse applications in fish production and irrigation in Suez, Egypt." Water Science and Technology 32, no. 11 (December 1, 1995): 137–44. http://dx.doi.org/10.2166/wst.1995.0422.

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About 400 m3/d of raw sewage from the City of Suez were diverted and treated by two parallel pond systems. The first treatment system was conventional Waste Stabilization Ponds which included anaerobic, facultative, and maturation compartments for a total residence time of 21 days. The second system included a series of four plankton ponds with a total residence time in the order of 26 days. The effluent from these inexpensive, but yet effective treatment technologies, was found to conform to the World Health Organization (WHO) standards for unrestricted agricultural and aquacultural applications. The treated waste effluent was successfully used to grow two types of local fish, i.e.Oreochromis niloticus and Mugil sehli. Fish production, without supplemental feeding or pond aeration, reached 5-7 metric tons/hectare/year. Furthermore, the fish were found to be free from human parasites and safe for human consumption. The nutrient rich effluent from the fish pond was further used to grow trees and cultivate certain types of crops, i.e. barley, maize, beets and ornamental plants. This study clearly demonstrates the effectiveness and benefits of waste stabilization ponds systems for low cost treatment of domestic waste and the combined reuse in aquaculture and agriculture applications. In addition, the unique treatment/reuse facilities constructed at Suez will continue to function as an experimental station and serve scientists and engineers to study and to plan applications in Egypt and the region.
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Slavík, O., and P. Horký. "Wild and farmed burbot Lota lota: differences in energy consumption and behavior during the spawning season." Aquaculture Environment Interactions 13 (March 11, 2021): 51–63. http://dx.doi.org/10.3354/aei00389.

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Farmed fish released in a native environment can display different spawning behaviour compared to their wild conspecifics. In our study, farmed and wild burbot, a species recently introduced for aquacultural production, were equipped with electromyogram (EMG) radio tags. EMG biotelemetry allows a description of the spatial distribution of fish together with simultaneous measurements of individual energy consumption. Farmed burbot were released into the wild to simulate stocking or hatchery escape and were observed over a nocturnal phase during November to January. The observational period was assumed to cover the whole spawning season, including an expected peak of spawning activity determined according to egg production by naturally spawning burbot in an experimental seminatural river channel. We detected increased energy consumption and lower movement activity at the time of expected peak spawning for wild burbot only. Across the whole spawning season, farmed females showed lower movement activity and energy consumption than wild females, whereas the opposite results were found for farmed males. Farmed and wild fish kept larger distances between each other than the individuals within a group (farmed and wild) across the whole spawning season. The closest positions occurred between males and females in the wild group, while for farmed fish, the closest position was found within the same sex. Sexually conditioned energy consumption and spatial distribution differed between wild and farmed fish.
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Clonts, Howard A., Curtis M. Jolly, and Syed Abdulkadir L. Alsagoff. "An Ecological Foodniche Concept as a Proxy for Fish-Pond Stocking Rates in Integrated Aquacultural Farming for Malaysia." Journal of the World Aquaculture Society 20, no. 4 (December 1989): 268–76. http://dx.doi.org/10.1111/j.1749-7345.1989.tb01014.x.

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Fattal, B., A. M. Eisawy, A. Dotan, H. I. Shuval, and K. H. Mancy. "Impact of Water Quality on Fish Production Based on Egyptian and Israeli Practices." Water Science and Technology 21, no. 3 (March 1, 1989): 27–33. http://dx.doi.org/10.2166/wst.1989.0074.

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This study deals with an Israel-Egypt-USA collaborative project on the health risks and technological options for fish grown in polluted waters. The fish were grown in aquaculture either with wastewater–enrichment or without. The study included one effluent polishing pond, two fish ponds and two water reservoirs. The fish stock in the ponds and reservoirs consisted mainly of tilapia (usually hybrids of Sarotherodonniloticus × S. aureus). The results of Israeli and Egyptian studies indicated that, on the average, the yields for wastewater aquaculture were higher than the yields without wastewater. However the Egyptian study showed that in areas with inadequate dilution of wastewater by freshwater near to a sewage outfall, there were negative effects on fish production. Microbiological assays (E.coli and Aeromonas) of water and fish tissues, indicate that the Aeromonas counts were high in the water as well as in the fish tissue. The bacterial count was higher in the digestive tract than in the water in which the fish were grown. In most cases only Aeromonas was detected in muscles. There was no difference between wastewater-enriched and nonwastewater aquacultures for both E.coli and Aeromonas concentrations in fish tissues.
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Howe, Jeffry C. "Fish nutrition in aquaculture." Fisheries Research 26, no. 3-4 (May 1996): 387–90. http://dx.doi.org/10.1016/s0165-7836(96)90006-5.

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Lyndon, A. R. "Fish nutrition in aquaculture." Aquaculture 134, no. 3-4 (July 1995): 374–75. http://dx.doi.org/10.1016/0044-8486(95)90085-3.

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Dissertations / Theses on the topic "Fish and Aquacultural Science"

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Hedberg, Nils. "Sea cages, seaweeds and seascapes : Causes and consequences of spatial links between aquaculture and ecosystems." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-141009.

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Aquaculture is of growing importance in the global seafood production. The environmental impact of aquaculture will largely depend on the type of environment in which the aquaculture system is placed. Sometimes, due to the abiotic or biotic conditions of the seascape, certain aquaculture systems tend to be placed within or near specific ecosystems, a phenomenon that in this thesis is referred to as aquaculture system - ecosystem links. The exposed ecosystems can be more or less sensitive to the system specific impacts. Some links are known to be widespread and especially hazardous for the subjected ecosystem such as the one between the shrimp aquaculture and the mangrove forest ecosystem. The aim of this thesis was to identify and investigate causes and consequences of other spatial links between aquaculture and ecosystems in the tropical seascape. Two different aquaculture system - ecosystem links were identified by using high resolution satellite maps and coastal habitat maps; the link between sea cage aquaculture and coral reefs, and the one between seaweed farms and seagrass beds. This was followed by interviews with the sea cage- and seaweed farmers to find the drivers behind the farm site selection. Many seaweed farmers actively choose to establish their farms on sea grass beds but sea cage farmers did not consider coral reefs when choosing location for their farms. The investigated environmental consequences of the spatial link between sea cage aquaculture and coral reefs were considerable both on the local coral reef structure, and coral associated bacterial community. Furthermore, coral reef associated fish are used as seedlings and feed on the farms, which likely alter the coral food web and lower the ecosystem resilience. Unregulated use of last resort antibiotics in both fish- and lobster farms were also found to be a wide spread practice within the sea cage aquaculture system, suggesting a high risk for development of antibiotic resistant bacteria. The effects of seaweed farms on seagrass beds were not studied in this thesis but have earlier been shown to be rather substantial within the borders of the farm but less so outside the farm. Further, a nomenclature is presented to facilitate the discussion about production system - ecosystem links, which may also be used to be able to incorporate the landscape level within eco-certifying schemes or environmental risk assessments. Finally - increased awareness of the mechanisms that link specific aquaculture to specific habitats, would improve management practices and increase sustainability of an important and still growing food producing sector - the marine aquaculture.

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Manuscript. Paper 4: Manuscript.

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Barkerud, Rickard. "Welfare Evaluation of Stunning Practices for Farmed Fish in the European Union." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-107042.

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An optimal method for stunning animals before slaughter should result in instantaneous and irreversible insensibility. Today, there are various stunning and slaughter practices used around the world for farmed fish. With aquaculture being a growing food sector, the welfare of the animals used has become increasingly important in the consciousness of consumers, researchers and regulatory bodies. With growing research into the subject matter, an overview to summarize and examine how these practices impact on the welfare of the fish, and how well they conform to animal welfare legislation, is warranted to minimize the suffering of farmed fish. Stunning practices used in aquaculture include methods such as electrical and percussive stunning, carbon dioxide and asphyxiation. Each with its own level of effectiveness in terms of how fast the method results in loss of consciousness, whether or not the effect is reversible and how the welfare of the fish is affected as determined by behavioural and physiological stress responses. It was concluded that there is no unambiguous answer as to which stunning method is optimal in regard to animal welfare in modern day aquaculture. The optimal method for a given facility is influenced by factors like practicalities relating to each individual method as well as legislation on EU and national level. Suggestions were made for future research.
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Frank, Jakob, and Tom Hjälmefjord. "Gains N Greens." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42870.

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At present, it is focused either on aquaculture or agriculture. Those who focus on aquaculture or Recirculating Aquaponics System (RAS) receive a by-product of ammonia, which is then cleaned and the water either goes back to the fish or it is not cleaned at all and as they do in the salmon farms for example they let it sink to the bottom which creates eutrophication and major problems among the marine. Those who focus on agriculture use colossal amounts of land and outdoor areas for cultivation. Most of them use chicken manure and huge amounts of pesticides for the plants to be optimal. Another alternative is that you can use aquaponics, which is a kind of ecosystem where fish and plants live and thrive on each other's residual products. The fish produce ammonia in the fish tank which eventually makes the water uninhabitable and instead of having a cleaning pump in the fish tank, the water is sent to the cultivation bed where the plants pick up the nutrients and clean the water in turn so that the water can be pumped back to the fish tank. This system makes it possible to produce both fish and plants in an optimized and safe system. Aquaponics is advantageous in that it utilizes the by-product of the fish and gives it to the plants. Where ammonia is the fish’s residual product that turns into nitrite and then to nitrate and it is precisely nitrate that the plants use as nutrition, in turn, they purify the water that goes back into the fish tanks, which gives a closed cycle. At present, aquaponics has not been able to impact on a large scale more than in a few places, partly because there is ignorance of how it works and partly because it requires technical knowledge of how to build a functioning system together. The project goal that we strive for is to get a PlugNPlay solution that enables people who want to invest in aquaponics, but do not have the technical knowledge to compile a functioning optimal system. The project group will also compare different farming methods and make measurements on which medium is the best to grow in, but also what kind of food that works to grow in an efficient way.
I dagsläget fokuseras det antingen på vattenbruk eller på jordbruk. De som fokuserar på vattenbruk eller Recirkulerande Akvaponiska System (RAS) får en biprodukt bestående av ammoniak, som sedan rengörs och vattnet går antingen tillbaka till fiskarna eller så rengörs det inte alls och som de gör i till exempel laxodlingarna, de låter det sjunka till bottnen vilket skapar övergödning och stora problem bland det marina. De som fokuserar på jordbruk använder kolossala mängder av jord och ytor utomhus för att kunna odla. De flesta använder sig av hönsgödsel och enorma mängder bekämpningsmedel för att plantorna ska bli optimala. Ett annat alternativ är att man kan använda sig av akvaponik som är ett sorts ekosystem där fiskar och växter lever och frodas på varandras restprodukter. Fiskarna producerar ammoniak i fisktanken som gör så att vattnet till slut blir obeboeligt och istället för att ha en rengöringspump i fisktanken så skickas vattnet över till odlingsbädden där växterna plockar upp näringen och rengör vattnet i sin tur så att vattnet sedan kan pumpas tillbaka till fisktanken. Detta system gör det möjligt att producera både fisk och växter i ett optimerat och säkert system. Akvaponik är fördelaktigt i den mån att den utnyttjar biprodukten ifrån fiskarna och ger denna till växterna. Där ammoniak är fiskens restprodukt som blir till nitrit och sedan till nitrat och det är just nitrat som växterna använder som näring, i sin tur så renar de vattnet som går tillbaka in till fisktankarna vilket ger ett slutet kretslopp. Akvaponiken har i dagsläget inte slagit igenom storskaligt mer än på ett fåtal platser, dels för att det finns okunskap om hur det fungerar dels för att det krävs teknisk kunskap om hur man bygger ihop ett fungerande system. Projektmålet som vi strävar efter är att få till en PlugNPlay lösning som gör det möjligt för människor som vill satsa på akvaponik men inte har den tekniska kunskapen att sammanställa ett fungerande optimalt system. Projektgruppen kommer även att jämföra olika odlingssätt och göra mätningar på vilket medium som är bäst att odla i men även vilken sorts mat som fungerar att odla på ett effektivt sätt.
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Lindbladh, Emma, and Johanna Eriksson. "Phenotypic correlates of spawning migration behaviour for roach (Rutilus rutilus) and ide (Leuciscus idus) in the stream Oknebäcken, Sweden." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-98343.

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Migration occurs among many animal species for the purpose of, among other things, finding food or to reproduce. Spawning migration is a form of migration that occurs among many fish species where they move to another site for reproduction. The movement can be obstructed by migration barriers like road culverts. Barriers to migration pose one of the greatest threats to biodiversity and ecosystem functions in freshwater. They impair the connectivity of watercourses and may prevent fish from improving reproductive success or completing their life histories altogether. There are both benefits and costs with migration, benefits such as increased survival for the adults and offspring, and costs such as increased energy consumption and increased mortality. The costs are often dependent on the morphological traits of the individual, like body shape and size. In this study, the spawning migration of two species of fish of the family Cyprinidae, ide (Leuciscus idus) and roach (Rutilus rutilus) was investigated. Few studies have been made on ide or on roach compared to other cyprinids and salmonids. This study might therefore enhance the overall knowledge of these two species. The overall aims of this project are to study and compare phenotypic correlates of spawning migration behaviour of ide and roach. The field studies were performed in Oknebäcken, Mönsterås (SE632310-152985), Sweden in March and April 2020. To describe the watercourse and define the location and characteristics of different potential migration barriers, a simplified biotope mapping method was used. The fish were caught in a hoop net and then measured, weighted, sexed, and injected with passive integrated transponder using the bevel down method. In order to register in stream movement of fish, reading stations with antennas were placed, at two locations upstream from the marking station and one downstream at the estuary. The sex ratio differed from the expected 1:1 with a majority of females for both species. This might be a result of fluctuations in survival of spawn coupled with different age-at-maturity between sexes. We found that individuals that arrived early to the stream were larger for both study species, as other studies also reported. Also, male ide was both larger and arrived before female ide. There might be an energy cost associated with early arrival to the stream and therefore, larger individuals arrive first. For roach, there was no difference in arrival time between the sexes although female roach were larger. There was no difference in the time spent in the stream between the species. For ide, females stayed for a longer period of time in the stream than males. However, the opposite was true for roach. This may be because male roach might benefit from more fertilization events when staying longer. There might therefore be a trade-off between the energy cost in staying in the stream and the increased fitness advantage in fertilization events. We found no correlation between any of the morphological traits and migration distance. However, since very few individuals were registered at the upstream reading stations, there might be an effect of migration barriers on the spawning migration. The mortality after spawning was higher for roach than for ide. For ide, a larger proportion of females than males died. For roach, individuals that arrived early was classified as alive to a greater extent than those who arrived late. Both similarities and differences between the species were discovered in this study which concludes that even closely related species might differ substantially from each other.
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Murray, David S. "The role of physical structure and micronutrient provisioning in determining egg quality and performance in fish." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3563/.

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This thesis examined novel and previously utilised parameters of egg quality to determine and define reproductive success in farmed and wild salmonids. The effect of holding environment and inter-female variation on salmonid egg quality was also examined. Furthermore, two nutritional feed trials were undertaken to investigate whether organic Se, supplemented into salmonids broodstock diets, was vertically transferred to their eggs and what affect this dietary supplementation had on egg quality. Finally, the possibility that morphological and biochemical adaptations are present on the chorion of eggs from European whitefish (Coregonus lavaretus) was investigated in a resident Scottish population. Chapter 2 examined methods to determine egg quality using eggs from a single population of brown trout (Salmo trutta). Egg survival, provided a biologically relevant definition for egg quality, which was used throughout this study to assess the importance of selected egg quality parameters. Based on a review of the literature and the relationship between parameters of egg quality and egg survival rates, three determinants of egg quality were chosen for further examination. These were chorion breaking strength, elemental concentrations within the egg and the protein profile of the chorion. Brown trout broodstock from a single population were separated prior to spawning and exposed to two different holding units, ‘Ae system’ or ‘S.C.E.N.E. system’ at two sites. Eggs were stripped from females and 13 determinants of egg quality collected, analysed individually, combined by principle components analysis into an integrated egg quality score which was validated against egg survival. The multivariate egg quality score differed significantly between fish held in the Ae and S.C.E.N.E. systems. Egg survival, chorion breaking strength and Se chorion concentrations were higher in eggs produced by broodstock held in the S.C.E.N.E. system compared to those in the Ae system. Alternatively, chorion concentrations of P and K were higher in eggs from fish held in the raceway system. This data highlights the complex interactions between the holding environment and pre-ovulating fish and resultant egg quality. The variation in egg survival in individual Atlantic salmon (Salmo salar) reared in the same environment was assessed and used to examine the suitability of chorion measurements as parameters of egg quality. There was a significant difference in the egg survival rates between individual salmon. Results also show that there was also variation in egg survival, chorion breaking strength, chorion elemental concentrations and chorion protein concentrations and profiles between individual Atlantic salmon. Subsequent analysis of the data showed that there was no difference in these egg quality parameters between high and low egg survival rates. Furthermore, there was no correlation between egg survival and the chorion quality parameters recorded during this study. The results show that individual variation between fish is an important factor affecting egg quality. Broodstock Atlantic salmon were fed a standard commercial diet, with or without the addition of a supplemented nutritional mix, which included 0.5mg/kg of Sel-plex (organic Se). The Se content of the eggs and livers of each fish were assessed as was egg survival rates and proteomic analysis of the egg chorion. Concentrations of Se in the eggs of the individuals fed the supplemented diet were significantly higher than those fed the non-supplemented diet. However, the egg survival rate was also significantly lower in the supplemented group of fish. The assessment of the chorion protein profile and its proteomic structure was inconclusive. These results support the hypothesis that dietary selenium is vertically transferred to immature eggs during oocyte development. The lack of a linear relationship between Se egg concentrations and egg survival suggests that the lower survival rates of eggs from broodstock fed the supplemented diet in this trial was due to another nutritional component of the diet rather than the Se. Selenium enriched eggs from Atlantic salmon fed a supplemented diet and eggs from conspecifics fed a non-supplemented diet were tested for their ability to resist infection by Saprolegnia under incubation conditions similar to those used by the aquaculture industry. There was no significant difference in the presence/absence of infection, infection rate or survival between eggs produced by Atlantic salmon fed the supplemented and non-supplemented diet. Therefore, it was concluded that supplementation of broodstock diet does not alter the resistance of eggs to Saprolegnia. The presence of adhesive mechanisms on the surface of European whitefish eggs was examined from a population found within Loch Eck, Scotland. European whitefish eggs remain non-adhesive in a solution chemically similar to ovarian fluid, but become adhesive seconds after contact with water. Examination of the ultrastructure of the chorion showed that the morphology altered significantly after contact with water with nodule-like protuberances attached to connective filaments on the surface, present in water hardened but not non-water hardened eggs. Biochemical analysis also showed the presence of Chain A, RNase ZF-3e in the chorion of water hardened but not non water hardened eggs. Histochemical staining of the chorion showed that the externa, but not the interna stained positively for the presence of glycoproteins. Egg adhesive mechanisms allow European whitefish eggs to remain in optimal spawning grounds where factors such as mechanical damage, predation, desiccation and hypoxia are minimised.
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Hamilton, Michael T. "Determining Spawning Occurrence and Reproductive Potential of Shenango River Lake Walleye." Connect to resource online, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1251895859.

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Maillard, Vincent M. "Characterization, Treatment, and Improvement of Aquacultural Effluents." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/30908.

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During the water quality and sludge characterization phase, average effluent quality over the course of a day was not found to be impaired during a 7-month sampling and monitoring study at the three trout farms. However, effluent quality was found to change significantly during times of high farm activity (i.e. feeding, harvesting, cleaning, etc.). Normalized Total Suspended Solids (TSS) concentrations were found to be as high as 115 mg/l during harvesting and 63 mg/l during feeding. Solids characterization studies proved farm waste solids degrade over time and that their particle size distributions are a function of the feed size and activity of a certain raceway. Waste solids accumulation studies proved that the solids removal efficiency of farm sediment traps were very low, and after a certain period of time, they reached capacity due to particle scouring.

A pilot plant was constructed in the water and sludge treatability phase to prove a baffled settling scheme was sufficient to treat average and peak TSS concentrations during a normal workweek. The study found optimal TSS removals at detention times of 15-20 minutes, and overflow rates of 77.4 â 48.9 m3/m2·d. Given economic, spatial, and operational constraints, sedimentation was found to be the most feasible treatment technology for raceway-system trout farms.
Master of Science

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Gatonye, Margaret. "Social Inclusivity and Equitable Development: Women in Fisheries and Aquaculture in Rural Communities of Kenya." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1586540674871228.

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Klase, Gary L. "The Chinese liver fluke Clonorchis sinensis: an environmental investigation into a foodborne parasite." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366378549.

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Barton, Mark B. "Spatial and Temporal Patterns of Arctic Nearshore Fish Community and Food Web Structures." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3735.

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Climate change and increasing anthropogenic activities are causing rapid changes to environmental and ecological processes in the Arctic Ocean. To better understand these changes, scientists have increased research efforts in these regions, but to date the number of studies on Arctic nearshore habitats are lacking. My dissertation responds to the paucity of information and investigates patterns in Arctic nearshore fish communities and food webs to gain insight to how these ecosystems may shift as these changes continue. I used multivariate statistical analysis to examine patterns in community structure and composition to determine that Arctic nearshore fish communities are largely driven by prey availability, salinity and temperature; and that species that are more abundant in warmer conditions are likely to increase in abundance as climatic conditions in the Arctic continue to warm. I improved the ability to apply stable isotope methods to Arctic food web studies by determining more appropriate model parameters using a laboratory-based isotope study on a common Arctic nearshore fish, and discuss its potential as a biological monitor species. These new parameters are used to confirm that a shift in prey resource dependence occurs across the seasonal shift from ice-covered winter to open-water summer conditions. Changes in basal resource dependence also occur later in the season across a latitudinal gradient where a shift to dependence on allochtonous inputs from nearby rivers increased trophic diversity. Using isotopic niche space theory, it was determined that the Arctic nearshore has a diverse prey base but that niche spaces of Arctic warm-water and cold-water species do overlap, and if numbers of warm-water fish continue to increase it will likely increase competition for resources for potentially less-adaptable, well-established, cold-water forage fish. On the other hand, if pelagic productivity is expected to increase and support larger fish biomasses, then there will be more than enough resources for warm-water and cold-water species to coexist, thus creating a more diverse prey base for piscivores in the Arctic.
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Books on the topic "Fish and Aquacultural Science"

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Ph, D. Rick Parker. Aquaculture Science. 2nd ed. Albany, NY: Cengage Delmar Learning, 2000.

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A, Anderson Trevor, ed. Fish nutrition in aquaculture. London: Chapman & Hall, 1995.

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Silva, Sena S. De. Fish nutrition in aquaculture. London: Chapman & Hall, 1994.

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Schäperclaus, Wilhelm. Fish diseases. 5th ed. Rotterdam: A.A. Balkema, 1992.

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Schäperclaus, Wilhelm. Fish diseases. Edited by Kulow H and Schreckenbach K. 5th ed. New Delhi: Published for the U.S. Dept. of the Interior and the National Science Foundation, Washington, D.C., by Amerind Pub. Co., 1991.

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Schäperclaus, Wilhelm. Fish diseases. 5th ed. New Delhi: Published for the United States Department of the Interior and the National Science Foundation, Washington, D.C., by Amerind, 1991.

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International Conference on Fish Farming Technology (1st 1993 Trondheim, Norway). Fish farming technology: Proceedings of the first International Conference on Fish Farming Technology, Trondheim, Norway, 9-12 August, 1993. Rotterdam, Netherlands: A.A. Balkema, 1993.

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A, Timmermans J., ed. Textbook of fish culture: Breeding and cultivation of fish. 2nd ed. Oxford: Fishing News Books, 1994.

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Laird, Lindsay. Risk management in aquaculture. [S.l.]: Wiley, 1996.

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Symposium on Climatic Change and Northern Fish (1992 Victoria, B.C.). Climate change and northern fish populations. Ottawa: National Research Council of Canada, 1994.

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Book chapters on the topic "Fish and Aquacultural Science"

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Correia, Alexandre, Lígia Pinto, and Marcos Mateus. "Implementation of a 3-Dimensional Hydrodynamic Model to a Fish Aquaculture Area in Sines, Portugal - A Down-Scaling Approach." In Lecture Notes in Computer Science, 265–78. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22747-0_21.

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Noble, Chris, Hernán A. Cañon Jones, Børge Damsgård, Matthew J. Flood, Kjell Ø. Midling, Ana Roque, Bjørn-Steinar Sæther, and Stephanie Yue Cottee. "Injuries and deformities in fish: their potential impacts upon aquacultural production and welfare." In Current Views on Fish Welfare, 61–83. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-5383-9_5.

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Aluko, Rotimi. "Fish." In Food Science Text Series, 121–26. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3480-1_8.

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Barham, Peter. "Fish." In The Science of Cooking, 91–106. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56823-7_7.

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Vieira, Ernest R. "Fish and Shellfish." In Elementary Food Science, 256–82. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-5112-3_17.

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Guèye-Ndiaye, A., and P. Golob. "Cured Fish." In Crop Post-Harvest: Science and Technology, Volume 2, 236–64. Oxford, UK: Blackwell Science Ltd, 2007. http://dx.doi.org/10.1002/9780470751022.ch14.

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Hopia, Anu, and Erik Fooladi. "Cold Skillet—Juicy Fish." In A Pinch of Culinary Science, 109–15. Boca Raton : CRC Press, Taylor & Francis Group, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429465376-10.

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Schönfisch, Birgitt, and Michael Kinder. "A Fish Migration Model." In Lecture Notes in Computer Science, 210–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45830-1_20.

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Janecek, Andreas, and Ying Tan. "Feeding the Fish – Weight Update Strategies for the Fish School Search Algorithm." In Lecture Notes in Computer Science, 553–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21524-7_68.

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Koryenna, Lyudmyla. "Paradoxes of Fish-Like Propulsion." In Science and Art Symposium 2000, 185–90. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4177-2_23.

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Conference papers on the topic "Fish and Aquacultural Science"

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Saha, Sajal, Rakibul Hasan Rajib, and Sumaiya Kabir. "IoT Based Automated Fish Farm Aquaculture Monitoring System." In 2018 International Conference on Innovations in Science, Engineering and Technology (ICISET). IEEE, 2018. http://dx.doi.org/10.1109/iciset.2018.8745543.

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Sung, Wen-Tsai, Jui-Ho Chen, and Hsi-Chun Wang. "Remote fish aquaculture monitoring system based on wireless transmission technology." In 2014 International Conference on Information Science, Electronics and Electrical Engineering (ISEEE). IEEE, 2014. http://dx.doi.org/10.1109/infoseee.2014.6948171.

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Silovs, Mihails, and Olga Dmitrijeva. "Differences in fishery and aquaculture products, their production and sale technical regulations in Eurasian Economic Union and legislation and practice of the European Union." In 22nd International Scientific Conference. “Economic Science for Rural Development 2021”. Latvia University of Life Sciences and Technologies. Faculty of Economics and Social Development, 2021. http://dx.doi.org/10.22616/esrd.2021.55.052.

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The mandatory requirements for the fishery and aquaculture products, their production and sale in force in the territory of the Customs Union of the Eurasian Economic Union (CU EAEU) arise from the regulatory and legal acts of the Eurasian Economic Union and its predecessor - the Customs Union - and apply in a package approach similar to the law of the European Union pertaining to the food safety area. The requirements of the EAEU technical regulations have been analysed taking into account that European exporting enterprises are first of all obliged to comply with the requirements of the listed EU regulatory and legal acts applicable to their production process and products. The aim of this paper was to run a comparative analysis on the mandatory requirements of the food legislation of the European and Customs Unions regarding fishery and aquaculture products, their production and sale. The issues of certification of certain product categories are analysed separately, the requirements for canned fish being highlighted. The analysis is relevant for all fish processing companies which may consider the possibility of starting export to the countries of the CU EAEU and are intended to reduce costs associated with products’ entry into these markets.
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Muhammad Masum, Abdul Kadar, Md Shahin, Md Kalim Amzad Chy, Shahidul Islam Khan, Ahmed Shan-A-Alahi, and Md Golam Rabiul Alam. "Design and Implementation of IoT based Ideal Fish Farm in the Context of Bangladesh Aquaculture System." In 2019 1st International Conference on Advances in Science, Engineering and Robotics Technology (ICASERT). IEEE, 2019. http://dx.doi.org/10.1109/icasert.2019.8934736.

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"Capturing Bio-Sensing Solutions: Biomonapp’s Story about the Seasons of Change across a Global Sustainable Landscape - Monitoring for Sustainable Bioremediation in Rural & Urban Farms, Soil, Agronomy, & Aquaculture." In InSITE 2018: Informing Science + IT Education Conferences: La Verne California. Informing Science Institute, 2018. http://dx.doi.org/10.28945/4052.

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Aim/Purpose: This paper addressed the topics of sustainable agronomy, aquaculture, hydroponics and soil monitoring methods that show how to move towards a repairing mode and bioremediation in many locations across the globe. Background: Sixty percent of the world’s major terrestrial ecosystems are being degraded; the human ecological footprint is spreading across the globe. The major human impact on terrestrial ecosystems in the form of depletion of ground water, over grazing of livestock, clearing for agriculture, timber and urban development, soil damage from off road vehicles, hydroelectric dams and reservoirs, and air pollution from urban areas and power plants. The cost to bio remediate is in the trillions. Methodology: AG biotech methodologies and applications Contribution: The paper bridges such gaps and informs about brave entrepreneurs and university and community individuals with innovative ideas and emerging technologies that gain the momentum for funding and monitoring nutrient uptake and toxic removal of harmful chemicals from water, soil, plants and fish for restoration to take place. Such techniques begin to conquer the giant by restoring the wealth to our soils and water, rural and urban farmlands and forests that retain and capture natural capital and ensure that nutrition and value added resources minerals are not lost. Findings: Biomonapp can detect and make recommendations for repairing & making sustainable solutions, many entrepreneurs & academics have pioneered ways to find SUS solutions Recommendations for Practitioners: Read from the articles and books listed in the references of this paper to understand the need for bioremediation. Use Biomonapp to diagnose water, soil & fish problems & find solutions. Attend conferences & seminars about SUS responsibility & phytoremediation Recommendation for Researchers: To investigate the phytoremediation and bioremediation techniques. Applications for Biomonapp for plants, water, soil, & animals to rejuvenate and repair water, soil and urban & rural communities Impact on Society: These ideas give the power back to local people who can learn to enhance their lives not only by foods but the sustainable green jobs that are being created to make sure urban and rural areas truly are sustainable. Future Research: The results of monitoring with biosensors & bio monitoring methods with regards to sustainable bioremediation, renovating, continued SUS responsibility training, continued evidence of repair and protecting natural capital & ecosystem services
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Kitazawa, Daisuke, Yoichi Mizukami, Makoto Kanehira, Youto Takeuchi, and Sho Ito. "Water Tank and Field Tests on the Performance of a Submergible Fish Cage for Farming Silver Salmon." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61631.

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Silver salmon is usually cultured around the eastern coast of Tohoku Region in Japan. The smolt of silver salmon begins to be cultured in a cage from November. Currently, the aquaculture of silver salmon is terminated until the end of July due to high water temperature since silver salmon will die in a few days if the diurnal minimum water temperature becomes 21 or 22°C. Live salmon cannot be obtained around August because wild salmon is captured from September or October. In the present study, a submergible cage using flexible tubes is proposed to farm silver salmon in deeper and cooler waters in August. The cage was submerged and floated up by ejecting air from and injecting air into the flexible tubes, respectively. The flexible tubes were inserted into the polyethylene pipes. First, water tank test using the 1/3.64 scaled model was carried out in the Ocean Engineering Basin, Institute of Industrial Science, The University of Tokyo. The cage was submerged or floated up, changing the methods of air ejection or injection. The cage was submerged and floated up faster in case of two vents to increase the rate of air flow than in case of only one vent on flexible tubes. The submersion was also faster if the length of an injection tube between the vents and air compressor was shortened to reduce the pressure loss. However, the maximum inclination angle of the cage was determined by the diameter of the cage and the submerged depth, not depending on the methods of air injection or ejection. Similar results were observed in the field test. Consequently, silver salmon could be farmed in deeper and cooler waters until the middle of August. The inclination of the cage was not the problem for silver salmon, while it may have unfavorable effects on the other species through the deformation of netting. Hence, the methods to reduce the inclination of the cage in submerging or floating up operation should be considered and validated in field test in the future.
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Zulbainarni, Nimmi, and Lokita Megawati. "Cost of Biosecurity Application: Comparing Aquaculture System and fish health in Traditional Fish Farm." In Proceedings of the Conference of the International Society for Economics and Social Sciences of Animal Health - South East Asia 2019 (ISESSAH-SEA 2019). Paris, France: Atlantis Press, 2019. http://dx.doi.org/10.2991/isessah-19.2019.27.

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Burgos-Morán, Ricardo, Jason Shaw, and Janeth Sánchez-Campuzano. "Simply low-cost recirculation aquaculture system for Amazonian native fish hatchery under controlled conditions." In MOL2NET 2019, International Conference on Multidisciplinary Sciences, 5th edition. Basel, Switzerland: MDPI, 2019. http://dx.doi.org/10.3390/mol2net-05-06623.

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Gansel, Lars, Thomas A. McClimans, and Dag Myrhaug. "Average Flow Inside and Around Fish Cages With and Without Fouling in a Uniform Flow." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20481.

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The average flow field inside and around the bottom of porous cylinders in a uniform flow is explored using Particle Image Velocimetry (PIV). Tests were conducted on six cylinders with porosities of 0%, 30%, 60%, 75%, 82% and 90% in a flume tank where the flow field inside and around the models is time averaged over 180 seconds. The models had a height-to-diameter ratio of 3 and were made from metal mesh. The Reynolds numbers ranged from 5,000 to 20,000 based on the diameter of the models and from 75 to 300 based on the diameter of individual strands of the mesh, which corresponds to the Reynolds numbers occurring at salmon fish cage netting used along the Norwegian coast. The porosities of 82%, 75% and 60% correspond to those of a fish cage netting in Norwegian Salmon farming with no, light and heavy biofouling, respectively. The results from this study are discussed with respect to the instantaneous flow field in and around the same cylinders at identical Reynolds numbers. The focus is on the effect of porosity on the ventilation inside the cages and the vertical transports within the near wake. It is shown that heavy fouling of aquacultural nettings can lead to internal circulation inside fish cages and therefore has the potential to reduce the ventilation of the net pens dramatically. The description of the time-averaged flow field inside and around porous cylinders can be used as benchmarks to validate and adjust numerical models of the flow past porous cylinders. The results from this study can be valuable also for the fish farming industry, as bio-fouling and the reduced porosity of fish cages can be monitored and controlled directly by fish farmers.
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Stepanov, D. V., and R. E. Olejnikova. "HYDRAULIC CUTTING OF SMALL FISH." In INNOVATIVE TECHNOLOGIES IN SCIENCE AND EDUCATION. DSTU-Print, 2020. http://dx.doi.org/10.23947/itno.2020.421-424.

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The raw resources of the Azov-black sea basin are of great importance for the Crimean Peninsula. The basis of the catch consists of small pelagic fish species – anchovy, sprat and sprat. Traditionally, they are used for the preparation of salted, smoked and chilled fish products, as well as for the preparation of canned food. Fish raw materials are sent for processing in undivided form, which provides low taste qualities, and low consumer demand. Low taste qualities are due to the presence of small fish remains of the intestines.
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Reports on the topic "Fish and Aquacultural Science"

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Stanton, Timothy K. Fish Acoustics Science Review. Fort Belvoir, VA: Defense Technical Information Center, January 2009. http://dx.doi.org/10.21236/ada492732.

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Stanton, Timothy K. Fish Acoustics Science Review. Fort Belvoir, VA: Defense Technical Information Center, September 2008. http://dx.doi.org/10.21236/ada532780.

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Atkinson, Dan, and Alex Hale, eds. From Source to Sea: ScARF Marine and Maritime Panel Report. Society of Antiquaries of Scotland, September 2012. http://dx.doi.org/10.9750/scarf.09.2012.126.

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The main recommendations of the panel report can be summarised under four headings: 1. From Source to Sea: River systems, from their source to the sea and beyond, should form the focus for research projects, allowing the integration of all archaeological work carried out along their course. Future research should take a holistic view of the marine and maritime historic environment, from inland lakes that feed freshwater river routes, to tidal estuaries and out to the open sea. This view of the landscape/seascape encompasses a very broad range of archaeology and enables connections to be made without the restrictions of geographical or political boundaries. Research strategies, programmes From Source to Sea: ScARF Marine and Maritime Panel Report iii and projects can adopt this approach at multiple levels; from national to site-specific, with the aim of remaining holistic and cross-cutting. 2. Submerged Landscapes: The rising research profile of submerged landscapes has recently been embodied into a European Cooperation in Science and Technology (COST) Action; Submerged Prehistoric Archaeology and Landscapes of the Continental Shelf (SPLASHCOS), with exciting proposals for future research. Future work needs to be integrated with wider initiatives such as this on an international scale. Recent projects have begun to demonstrate the research potential for submerged landscapes in and beyond Scotland, as well as the need to collaborate with industrial partners, in order that commercially-created datasets can be accessed and used. More data is required in order to fully model the changing coastline around Scotland and develop predictive models of site survival. Such work is crucial to understanding life in early prehistoric Scotland, and how the earliest communities responded to a changing environment. 3. Marine & Maritime Historic Landscapes: Scotland’s coastal and intertidal zones and maritime hinterland encompass in-shore islands, trans-continental shipping lanes, ports and harbours, and transport infrastructure to intertidal fish-traps, and define understanding and conceptualisation of the liminal zone between the land and the sea. Due to the pervasive nature of the Marine and Maritime historic landscape, a holistic approach should be taken that incorporates evidence from a variety of sources including commercial and research archaeology, local and national societies, off-shore and onshore commercial development; and including studies derived from, but not limited to history, ethnology, cultural studies, folklore and architecture and involving a wide range of recording techniques ranging from photography, laser imaging, and sonar survey through to more orthodox drawn survey and excavation. 4. Collaboration: As is implicit in all the above, multi-disciplinary, collaborative, and cross-sector approaches are essential in order to ensure the capacity to meet the research challenges of the marine and maritime historic environment. There is a need for collaboration across the heritage sector and beyond, into specific areas of industry, science and the arts. Methods of communication amongst the constituent research individuals, institutions and networks should be developed, and dissemination of research results promoted. The formation of research communities, especially virtual centres of excellence, should be encouraged in order to build capacity.
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