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1
Abeysinghe, D. H., A. Shanableh, and B. Rigden. "Biofilters for water reuse in aquaculture." Water Science and Technology 34, no. 11 (December 1, 1996): 253–60. http://dx.doi.org/10.2166/wst.1996.0287.
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Aquaculture is a rapidly expanding industry in Australia and around the world. The majority of aquaculture operations employ flow through systems whereby residual feed and metabolic products are discharged to a nearby water body. In many countries, the discharge of nutrients rich aquaculture waters has contributed to the degradation of water quality in receiving water bodies. Aquaculture's dependency on water resources ultimately makes water recycling an attractive waste management option. Submerged flow biofilters, utilising a filter media with specific surface area of approximately 141m2/m3, were used to remove nitrogen and phosphorus from a synthetic fish farm water. Three biofilter systems were tested for nitrification, nitrification followed by denitrification, and combined nutrients removal. Successful carbon removal and nitrification were achieved in the nitrification system. The nitrification/denitrification biofilters achieved complete denitrification and nitrogen removal. The cyclic aerated/unaerated combined nutrients removal system achieved approximately 40 percent phosphorus removal, complete nitrification and 40 percent denitrification. The study demonstrated the viability of using biofilters for nutrients removal from fish farm waters. Biofilters are readily designed and constructed in modular form which makes such systems particularly useful for water quality management in aquaculture.
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Bottema, Mariska J. M., Simon R. Bush, and Peter Oosterveer. "Assuring aquaculture sustainability beyond the farm." Marine Policy 132 (October 2021): 104658. http://dx.doi.org/10.1016/j.marpol.2021.104658.
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Ferreira, J. G., A. J. S. Hawkins, and S. B. Bricker. "Management of productivity, environmental effects and profitability of shellfish aquaculture — the Farm Aquaculture Resource Management (FARM) model." Aquaculture 264, no. 1-4 (April 2007): 160–74. http://dx.doi.org/10.1016/j.aquaculture.2006.12.017.
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Lan, Hsun-Yu, Naomi Ubina, Shyi-Chyi Cheng, Shih-Syun Lin, and Cheng-Ting Huang. "Digital Twin Architecture Evaluation for Intelligent Fish Farm Management Using Modified Analytic Hierarchy Process." Applied Sciences 13, no. 1 (December 22, 2022): 141. http://dx.doi.org/10.3390/app13010141.
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Precision aquaculture deploys multi-mode sensors on a fish farm to collect fish and environmental data and form a big collection of datasets to pre-train data-driven prediction models to fully understand the aquaculture environment and fish farm conditions. These prediction models empower fish farmers for intelligent decisions, thereby providing objective information to monitor and control factors of automatic aquaculture machines and maximize farm production. This paper analyzes the requirements of a digital transformation infrastructure consisting of five-layered digital twins using extensive literature reviews. Thus, the results help realize our goal of providing efficient management and remote monitoring of aquaculture farms. The system embeds cloud-based digital twins using machine learning and computer vision, together with sensors and artificial intelligence-based Internet of Things (AIoT) technologies, to monitor fish feeding behavior, disease, and growth. However, few discussions in the literature concerning the functionality of a cost-effective digital twin architecture for aquaculture transformation are available. Therefore, this study uses the modified analytical hierarchical analysis to define the user requirements and the strategies for deploying digital twins to achieve the goal of intelligent fish farm management. Based on the requirement analysis, the constructed prototype of the cloud-based digital twin system effectively improves the efficiency of traditional fish farm management.
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Naomasa, Emiko, Shawn Arita, Clyde Tamaru, and PingSun Leung. "ASSESSING HAWAII'S AQUACULTURE FARM AND INDUSTRY PERFORMANCE." Aquaculture Economics & Management 17, no. 2 (April 3, 2013): 184–207. http://dx.doi.org/10.1080/13657305.2013.796235.
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Chang, Bea-Ven, Chien-Sen Liao, Yi-Tang Chang, Wei-Liang Chao, Shinn-Lih Yeh, Dong-Lin Kuo, and Chu-Wen Yang. "Investigation of a Farm-scale Multitrophic Recirculating Aquaculture System with the Addition of Rhodovulum sulfidophilum for Milkfish (Chanos chanos) Coastal Aquaculture." Sustainability 11, no. 7 (March 28, 2019): 1880. http://dx.doi.org/10.3390/su11071880.
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Globally, coastal aquaculture is growing due to the large demand for marine products. Specific impacts caused by coastal aquaculture on the environment include the discharge of culture farm effluents, stress on ground water (the absence of recycling), nutrient pollution, and diseases of cultured animals. Three methods, integrated multitrophic aquaculture (IMTA), recirculating aquaculture system (RAS), and beneficial bacteria for aquaculture, have been developed to solve these problems. In this study, the advantages of IMTA and RAS were integrated to develop a novel multitrophic recirculating aquaculture system (MRAS) to adapt to the farm-scale culturing of milkfish (Chanos chanos). The photosynthetic bacteria Rhodovulum sulfidophilum was added to enhance the performance of the farm-scale milkfish MRAS. This setting could promote growth of beneficial bacteria, such as the nitrogen cycle-associated microbial community and the anoxygenic phototrophic Acidobacteria community. The ammonia level was reduced, and the total phosphorous level was stable in the water recycled in the MRAS. The cyanobacteria, algae, Vibrio, Escherichia, and other potential pathogenic bacteria communities were inhibited in the MRAS. This study provides an effective design of a water recycling aquaculture system. Milkfish, Asian tiger shrimp (Penaeus monodon), Asian hard clam (Meretrix lusoria), and seaweed (Gracilaria sp.) can be cultured and simultaneously produced in the system.
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Kassem, Taher, Isam Shahrour, Jamal El Khattabi, and Ahmad Raslan. "Smart and Sustainable Aquaculture Farms." Sustainability 13, no. 19 (September 26, 2021): 10685. http://dx.doi.org/10.3390/su131910685.
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This paper presents the design and construction of a smart and sustainable fish farm. The farm is based on the hybrid aquaculture concept that combines the advantages of the recirculation aquaculture system (RAS), the zero-water discharge (ZWD), and smart technology. The system’s smartness consists of using the latest technology, including monitoring and automation, ensuring zero water discharge, good water quality, reduced energy consumption, and high biosecurity. In addition, the system does not use chemicals in the aquaculture process. The paper describes the design of this system, including the hydraulic system, the smart monitoring system, the feeding regime, and the control of the biological parameters. Tests conducted in Tabuk, Saudi Arabia, showed high performance of this system with around 90% survival rate. In addition, observations showed the system’s capacity to maintain the water quality parameters within the optimal water quality ranges, reduce energy consumption, and sustain efficient shrimp waste recycling.
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TADA, KUNINAO, SHIGERU MONTANI, VEERAPORN SUKSOMJIT, TOSHIKAZU HIROSE, and KAZUHIKO ICHIMI. "Settling flux at Yellowtail Sariola quinqueradiata aquaculture farm." NIPPON SUISAN GAKKAISHI 75, no. 3 (2009): 383–89. http://dx.doi.org/10.2331/suisan.75.383.
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Bush, Simon R., Peter Oosterveer, Mariska Bottema, Miranda Meuwissen, Yann de Mey, Sawitree Chamsai, Ho Hong Lien, and Mohan Chadag. "Inclusive environmental performance through ‘beyond-farm’ aquaculture governance." Current Opinion in Environmental Sustainability 41 (December 2019): 49–55. http://dx.doi.org/10.1016/j.cosust.2019.09.013.
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Dewi, Rita Rosmala, Latiffah Hassan, Hassan Mohammad Daud, Mohd Fuad Matori, Zunita Zakaria, Nur Indah Ahmad, Saleha A. Aziz, and Saleh Mohammed Jajere. "On-Farm Practices Associated with Multi-Drug-Resistant Escherichia coli and Vibrio parahaemolyticus Derived from Cultured Fish." Microorganisms 10, no. 8 (July 27, 2022): 1520. http://dx.doi.org/10.3390/microorganisms10081520.
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Aquaculture activities have been implicated as responsible for the emergence of antimicrobial resistance (AMR), leading to broad dissemination and transference of antibiotic resistance to pathogens that affect humans and animals. The current study investigates the on-farm practices and environmental risk factors that can potentially drive the development and emergence of multi-drug-resistant (MDR) Escherichia coli and Vibrio parahaemolyticus in the aquaculture system. A cross-sectional study was conducted on 19 red hybrid tilapia (Oreochromis spp.) and 13 Asian seabass (Lates calcarifer, Bloch 1970) farms on the west coast of peninsular Malaysia. Data were collected using a structured questionnaire pertaining to farm demography, on-farm management practices and environmental characteristics. Multi-drug-resistant E. coli (n = 249) and V. parahaemolyticus (n = 162) isolates were analyzed using multi-level binary logistic regression to identify important drivers for the occurrence and proliferation of the MDR bacteria. On-farm practices such as manuring the pond (OR = 4.5; 95% CI = 1.21–16.57) were significantly associated with the occurrence of MDR E. coli, while earthen ponds (OR = 8.2; 95% CI = 1.47–45.2) and human activity adjacent to the farm (OR = 4.6; 95% CI = 0.75–27.98) were associated with an increased likelihood of MDR V. parahaemolyticus. Considering the paucity of information on the drivers of AMR in the aquaculture production in this region, these findings indicate the targeted interventions implementable at aquaculture farms to efficiently abate the risk of MDR amongst bacteria that affect fish that are of public health importance.
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Eribo, O., and A. Odali. "EFFECTIVENESS OF EICHHORNIA CRASSIPES IN THE TREATMENT OF AQUACULTURE EFFLUENT FROM A FISH FARM IN BENIN CITY, NIGERIA." African Journal of Health, Safety and Environment 2, no. 2 (October 4, 2021): 36–44. http://dx.doi.org/10.52417/ajhse.v2i2.155.
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Aquaculture production has seen much increase in Nigeria in recent times due to the rise in fish farming occasioned by the availability of water and materials for setting up, the profit turn-over, increase in demand for fish, and the effort to curb the rising youth unemployment rate. However, this massive surge of interest in aquaculture and fish farming is accompanied by the challenge of pollution as the effluent from aquacultural settings gets discharged into nearby water bodies hence the need for remediation. Aquatic plants have been used to remediate polluted water bodies and possess many advantages over other methods. Therefore, this study aimed to investigate the effectiveness of Eichhornia crassipes in the clean-up of aquaculture effluent. Wastewater collected from a commercial fish pond in Benin City, Nigeria, were divided into two treatment groups. One group was diluted with an equal volume of distilled water (50%), and the other group consisted of 100% wastewater. Distilled water was used as a control (0%). The samples were treated with Eichhornia crassipes for 14 days, following which samples were collected for physicochemical analysis. The result showed that E. crassipes reduced significantly the pH from 7.44 to 5.98 and 7.28 to 6.10 in the 50% and 100% effluent samples, respectively. The removal efficiency of E. crassipes in the 100% effluent sample was 69% for phosphate, and 94% for nitrate. The study suggests that E. crassipes may be effective in improving the quality of aquaculture wastewater.
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Gadeken, Kara, William C. Clemo, Will Ballentine, Steven L. Dykstra, Mai Fung, Alexis Hagemeyer, Kelly M. Dorgan, and Brian Dzwonkowski. "Transport of biodeposits and benthic footprint around an oyster farm, Damariscotta Estuary, Maine." PeerJ 9 (August 11, 2021): e11862. http://dx.doi.org/10.7717/peerj.11862.
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The benthic impact of aquaculture waste depends on the area and extent of waste accumulation on the sediment surface below and around the farm. In this study we investigated the effect of flow on biodeposit transport and initial deposition by calculating a rough aquaculture “footprint” around an oyster aquaculture farm in the Damariscotta River, ME. We also compared a site under the farm to a downstream “away” site calculated to be within the footprint of the farm. We found similar sediment biogeochemical fluxes, geochemical properties and macrofaunal communities at the site under the farm and the away site, as well as low organic enrichment at both sites, indicating that biodeposition in this environment likely does not have a major influence on the benthos. To predict accumulation of biodeposits, we measured sediment erodibility under a range of shear stresses and found slightly higher erosion rates at the farm than at the away site. A microalgal mat was observed at the sediment surface in many sediment cores. Partial failure of the microalgal mat was observed at high shear velocity, suggesting that the mat may fail and surface sediment erode at shear velocities comparable to or greater than those calculated fromin situ flow measurements. However, this study took place during neap tide, and it is likely that peak bottom velocities during spring tides are high enough to periodically “clear” under-farm sediment of recent deposits.
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Lee, Wen Chiat. "Marketing margins of aquaculture shrimp production in Kedah." Borneo Journal of Marine Science and Aquaculture (BJoMSA) 4, no. 1 (December 23, 2020): 20–23. http://dx.doi.org/10.51200/bjomsa.v4i1.1992.
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Shrimp aquaculture has great potential for providing income and employment opportunities to farmers. Shrimp production can also contribute to economic growth given its high value and demand in Malaysia. However, it is often said that players in the marketing channel extract high margins for themselves. This study intends to verify this claim by examining a case study based on white leg shrimp (Litopenaeus vannamei) aquaculture in Kedah. The data for this study was obtained from a detailed study involving a shrimp retailer in Kedah. The marketing margins were calculated from the interviews of the farmer and the retailer. The results showed that the marketing channel was quite efficient because there was no large gap in the prices between the marketing channels. The difference between retail price and farm price is only RM7 per kilogram for the white shrimp which accounts for 43.75 percent of total farm price and represents the cost of bringing shrimps from the farm to the retail market.
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Gunnarsson, Stefan, Katarina Arvidsson Segerkvist, Torun Wallgren, Per Hjelmstedt, Ulf Sonesson, and Helena Hansson. "Systematic Mapping of Research on Farm-Level Sustainability in Finfish Aquaculture." Sustainability 12, no. 23 (November 29, 2020): 9985. http://dx.doi.org/10.3390/su12239985.
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The sustainability of future finfish aquaculture needs to be improved to meet global environmental challenges. Global fish aquaculture production has expanded significantly recently, due to the increased demand for fish for human consumption. Therefore, it is important to mitigate challenges to the sustainability of the sector, such as pollution and depletion of natural resources. In this study, we systematically mapped the scientific literature on farm-level sustainability in fish aquaculture. The concept of sustainability was considered holistically, covering its economic, environmental and social dimensions, each consisting of a range of different aspects that may contradict or reinforce each other. Literature published between January 2000 and August 2020 with the geographical focus on Europe, Northern America and Australia–New Zealand was included. The search resulted in a total of 287 hits, but after the exclusion of articles that did not match the scope, only 17 papers remained for the systematic mapping. Of these, five papers covered all three dimensions of sustainability. Economic sustainability was addressed in 10 papers, environmental sustainability in 13 papers and social sustainability in 12 papers. This systematic mapping provides an important foundation for discussions and prioritisations of future actions to increase knowledge on farm-level sustainability in finfish aquaculture.
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Hwang, Min-Jin, Jeongmin Cha, and Eun-Sik Kim. "The Water Quality Management for Recirculating Aquaculture System by Applying Nano Adsorption Technology." Journal of Nanoscience and Nanotechnology 21, no. 7 (July 1, 2021): 3975–79. http://dx.doi.org/10.1166/jnn.2021.19202.
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In a fish farm, the water quality is important to ensure fish growth and farm productivity. However, the study of the quality of water using in aquaculture has been ignored until now. Although there are several methods to treat water, nanomaterials have not yet been applied for indoor fish farming because it may difficult to supply a sufficient amount of water, and the operating parameters have not been developed for recirculating aquaculture systems. Nanotechnology can be applied to treat water, specifically through adsorption and filtration, to produce drinking water from surface water and to treat wastewater by processing a high volume of effluent. The adsorption and filtration of seawater has also progressed to allow for desalination of seawater, and this is recognized as a necessary tool for extended treatment protocols of various types of seawater. This study investigated the treatment of aquaculture water using nano-porous adsorbents (e.g., pumice stone) to control the contaminants in seawater in order to maintain the water quality required for aquaculture. The results are used to derive an analytical relationship between the ionic species in aquaculture water, and this provides empirical parameters for a batch reactor for aquaculture. The quality of the influent and effluent for aquaculture is compared using time-series analyses to evaluate the reduction rate of ionic components and thus suggest the optimum condition for fish farming using bioreactor processes.
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Nugroho, Ary Susatyo, Endah Rita Sulistya Dewi, and Eko Retno Mulyaningrum. "Pengembangan Usaha Produk Intelektual Kampus UPGRIS Farm." Journal of Dedicators Community 3, no. 1 (January 23, 2019): 1–7. http://dx.doi.org/10.34001/jdc.v3i1.703.
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UPGRIS-Farm is one business unit owned by PGRI University Semarang (UPGRIS) engaged in agriculture and fisheries. UPGRIS-Farm has been running for about five years and has produced some fresh vegetables and freshwater fish. Through the PPUPIK program, UPGRIS-Farm will be developed into an environmentally-friendly integrated agriculture based business unit, and produces fresh organic vegetables and fresh freshwater fish that are free and insecticide free to meet the needs of the community, both around the campus of UPGRIS and the people of Semarang . UPGRIS-Farm PPUPIK products will be generated through the merger of two technologies, namely "Hydroponic and Aquaculture" technology. UPGRIS's Devotional Team, which has expertise and experience in line with agriculture and plumbing, has also developed this business into an Agroeduwisata for learners at the play group, early childhood and elementary level. Agroeduwisata will combine the attractions of agriculture and fisheries with hydroponic and aquaculture technology and nature-based tourism that is clean, comfortable, and beautiful.
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Edwards, Peter, Harvey Demaine, Nick Innes-Taylor, and Danai Turongruang. "Sustainable Aquaculture for Small-scale Farmers: Need for a Balanced Model." Outlook on Agriculture 25, no. 1 (March 1996): 19–26. http://dx.doi.org/10.1177/003072709602500105.
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Relatively few small-scale farmers culture fish, even in Asia, as the gap between the traditional supply — wild fish — and the demand has begun to widen only relatively recently. Rapid human population growth, overfishing and environmental degradation are providing a stimulus for the growth of aquaculture but sustainable systems of production remain to be developed for most areas. A balanced model involving both on-farm and off-farm resources is required to promote aquaculture so that it can fulfil its potential and contribute significantly to people's welfare. Rising expectations and the poor resource base of most small-scale farms dictate the need to intensify nutrient flows and productivity through increased levels of off-farm inputs, as outlined here for resource-poor northeast Thailand.
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Mercaldo-Allen, R., P. Clark, Y. Liu, G. Phillips, D. Redman, PJ Auster, E. Estela, L. Milke, A. Verkade, and JM Rose. "Exploring video and eDNA metabarcoding methods to assess oyster aquaculture cages as fish habitat." Aquaculture Environment Interactions 13 (August 12, 2021): 277–94. http://dx.doi.org/10.3354/aei00408.
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Multi-tiered oyster aquaculture cages may provide habitat for fish assemblages similar to natural structured seafloor. Methods were developed to assess fish assemblages associated with aquaculture gear and boulder habitat using underwater video census combined with environmental DNA (eDNA) metabarcoding. Action cameras were mounted on 3 aquaculture cages at a commercial eastern oyster Crassostrea virginica farm (‘cage’) and among 3 boulders on a natural rock reef (‘boulder’) from June to August 2017 in Long Island Sound, USA. Interval and continuous video recording strategies were tested. During interval recording, cameras collected 8 min video segments hourly from 07:00 to 19:00 h on cages only. Continuous video was also collected for 2-3 h on oyster cages and boulders. Data loggers recorded light intensity and current speed. Seawater was collected for eDNA metabarcoding on the reef and farm. MaxN measurements of fish abundance were calculated in video, and 7 fish species were observed. Black sea bass Centropristis striata, cunner Tautogolabrus adspersus, scup Stenotomus chrysops, and tautog Tautoga onitis were the most abundant species observed in both oyster cage and boulder videos. In continuous video, black sea bass, scup, and tautog were observed more frequently and at higher abundance on the cage farm, while cunner were observed more frequently and at higher abundance on boulders within the rock reef. eDNA metabarcoding detected 42 fish species at the farm and reef. Six species were detected using both methods. Applied in tandem, video recording and eDNA provided a comprehensive approach for describing fish assemblages in difficult to sample structured oyster aquaculture and boulder habitats.
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TADA, KUNINAO, SHIGERU MONTANI, VEERAPORN SUKSOMJIT, TOSHIKAZU HIROSE, and KAZUHIKO ICHIMI. "Errata: Settling flux at Yellowtail Sariola quinqueradiata aquaculture farm." NIPPON SUISAN GAKKAISHI 75, no. 4 (2009): 769. http://dx.doi.org/10.2331/suisan.75.769.
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Boyd, Claude E. "Guidelines for aquaculture effluent management at the farm-level." Aquaculture 226, no. 1-4 (October 2003): 101–12. http://dx.doi.org/10.1016/s0044-8486(03)00471-x.
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Uddin, Md Asek, Rashidul Hassan, KM Abdul Halim, MT Nur A. Sharmin Aktar, Most Farida Yeasmin, Md Hamidur Rahman, Moin Uddin Ahmad, and Gias Uddin Ahmed. "Effects of aqua drugs and chemicals on the farmed shrimp (Penaeus monodon) in southern coastal region of Bangladesh." Asian Journal of Medical and Biological Research 6, no. 3 (October 17, 2020): 491–98. http://dx.doi.org/10.3329/ajmbr.v6i3.49798.
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The study was conducted to observe the effects of aqua drugs and chemicals on the health of farmed shrimp (Penaeusmonodon) in southern coastal region of Bangladesh. Samples were collected from shrimp farms and ghers in three upazilas of Cox’s Bazar district, namely Cox’s Bazar Sadar, Teknaf and Maheshkhaliupazila during March 2018 to October 2018. Data were collected through personal contact, questionnaire interview and discussion with key informants. During the study period water temperature were ranged between 26°C to 32°C in summer and 23°C in rainy season. The highest pH was 8.0 ± 0.20 recorded from Beximco Shrimp Farm of Cox’s Bazar Sadar in summer and the lowest was 7.0 ± 0.23 from the Aquaculture Farm Limited of Cox’s Bazar Sadar. Farmers in the study areas used Geotox to remove gas, TSP to proliferate algae and Zymetin to inhibit growth of pathogens and to promote shrimp growth. The highest recovery was recorded 90-96% by use of Bleaching powder in Aquaculture Farm limited of Cox’s Bazar Sadar area. On the other hand, the lowest recovery was recorded 60-65% by use of Zeolite plus in Beximco shrimp farm of Cox’s Bazar Sadarupazila. The average recovery was recorded from Beximco shrimp farm of Cox’s Bazar Sadarupazila. By use of EcodoxinZoothamniumwas 80-85% recovery. Farmers used more aqua-drugs in rainy season than summer. By use of Oxyflow instant oxygen supply was recorded 75-80% recovery. The highest recovery was recorded 90-95% by use of Lime in Unique Aquaculture of Teknaf. On the other hand, the lowest recovery was recorded 60-65% by use of Renamox in MKA shrimp farm of Teknafupazila. The average recovery was recorded Unique Aquaculture of Teknafupazila. From field and laboratory observations it was revealed that the study area had potentiality for shrimp culture, although necessary measures need to be taken specially during rainy season.
Asian J. Med. Biol. Res. September 2020, 6(3): 491-498
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Ubina, Naomi A., and Shyi-Chyi Cheng. "A Review of Unmanned System Technologies with Its Application to Aquaculture Farm Monitoring and Management." Drones 6, no. 1 (January 6, 2022): 12. http://dx.doi.org/10.3390/drones6010012.
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This paper aims to provide an overview of the capabilities of unmanned systems to monitor and manage aquaculture farms that support precision aquaculture using the Internet of Things. The locations of aquaculture farms are diverse, which is a big challenge on accessibility. For offshore fish cages, there is a difficulty and risk in the continuous monitoring considering the presence of waves, water currents, and other underwater environmental factors. Aquaculture farm management and surveillance operations require collecting data on water quality, water pollutants, water temperature, fish behavior, and current/wave velocity, which requires tremendous labor cost, and effort. Unmanned vehicle technologies provide greater efficiency and accuracy to execute these functions. They are even capable of cage detection and illegal fishing surveillance when equipped with sensors and other technologies. Additionally, to provide a more large-scale scope, this document explores the capacity of unmanned vehicles as a communication gateway to facilitate offshore cages equipped with robust, low-cost sensors capable of underwater and in-air wireless connectivity. The capabilities of existing commercial systems, the Internet of Things, and artificial intelligence combined with drones are also presented to provide a precise aquaculture framework.
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McCOY, ERICA, JAMIE MORRISON, VICTOR COOK, JOHN JOHNSTON, DENISE EBLEN, and CHUANFA GUO. "Foodborne Agents Associated with the Consumption of Aquaculture Catfish." Journal of Food Protection 74, no. 3 (March 1, 2011): 500–516. http://dx.doi.org/10.4315/0362-028x.jfp-10-341.
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In the Food, Conservation, and Energy Act (Farm Bill) of 2008, Congress amended the Federal Meat Inspection Act to provide that catfish be inspected by the U.S. Department of Agriculture's Food Safety and Inspection Service (FSIS). As part of the development of its inspection program, the FSIS conducted an assessment of the food safety risk associated with consuming farm-raised catfish. To thoroughly identify hazards for consideration in the risk assessment, the scientific literature was surveyed for all potential agents that have been linked to illness associated with farm-raised catfish consumption. A review of microbial hazards suggested that Salmonella is the foodborne pathogen most likely to be associated with catfish, but the impact of other pathogens remains unclear. This review also summarizes the current data available on chemical residues in catfish, including pesticides and heavy metals, and any regulatory levels that have been established for these compounds. The current usage of veterinary drugs in aquaculture also is outlined, including information on unapproved usage of drugs in catfish.
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Alam, M. K., M. A. B. Habib, and M. S. Tahmid. "A survey on commercial fish feed used at Fulpur area in Mymensingh district." Journal of the Bangladesh Agricultural University 10, no. 1 (October 8, 2012): 175–78. http://dx.doi.org/10.3329/jbau.v10i1.12111.
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This study was performed in Fulpur upazila under Mymensingh district for the period of 13 months from August 2010 to August 2011 to know the socio-economic and aquaculture status of fish farm owners and to assess the nutritive value of commercial fish feed available at Fulpur upazila of Mymensingh district. Fish farm owners were prominent in the study area and majority was illiterate but had the ability of signature. The monoculture and polyculture farm in the studied area were established in ranged from 1995 to 2005, respectively. Most of the fish farm owners followed polyculture system and had small farm area. Majority of fish farm owners leased water body for aquaculture. The minimum size of the farm was 0.162 ha and maximum size of the farm was 3.722 ha. The average depth of the water body in winter season was 1.61 meter and in summer season was 2.32 meter. Majority of fish farm owners followed proper pre-stocking and post stocking management with maintaining high stocking density of fish and using either commercial or farm made fish feed. Among the commercial fish feed tested the highest value of moisture was found in Aftab feed, protein in Nourish feed, lipid in CP feed, ash in Aftab feed, fibre in ACI feed and carbohydrate in ACI feed. Most of the commercial fish feed maintain standard level of chemical composition. DOI: http://dx.doi.org/10.3329/jbau.v10i1.12111 J. Bangladesh Agril. Univ. 10(1): 175178, 2012
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Arru, Brunella, Roberto Furesi, Laura Gasco, Fabio Madau, and Pietro Pulina. "The Introduction of Insect Meal into Fish Diet: The First Economic Analysis on European Sea Bass Farming." Sustainability 11, no. 6 (March 21, 2019): 1697. http://dx.doi.org/10.3390/su11061697.
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The economic and environmental sustainability of aquaculture depends significantly on the nature and quality of the fish feed used. One of the main criticisms of aquaculture is the need to use significant amounts of fish meal, and other marine protein sources, in such feed. Unfortunately, the availability of the oceanic resources, typically used to produce fish feed, cannot be utilized indefinitely to cover the worldwide feed demand caused by ever-increasing aquaculture production. In light of these considerations, this study estimates how aquaculture farm economic outcomes can change by introducing insect meal into the diet of cultivated fish. Several possible economic effects are simulated, based on various scenarios, with different percentages of insect flour in the feed and varying meal prices using a case study of a specialized off-shore sea bass farm in Italy. The findings indicate that the introduction of insect meal—composed of Tenebrio molitor—would increase feeding costs due to the high market prices of this flour and its less convenient feed conversion ratio than that of fish meal. Therefore, the expected environmental benefits of using this highly promising insect meal in fish feed do not align with the current economic interests of the aquaculture industry. To our knowledge, this is the first study to investigate this theme, and it must be noted that our findings cannot be generalized widely because a specific case study was used. Nevertheless, our findings suggest that efforts should be made—at least at the farm level—to find profitable ways to encourage the introduction of this attractive alternative to guarantee both economic and environmental sustainability in the near future.
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Silva, Dina, Eugen Rusu, and C. Guedes Soares. "The Effect of a Wave Energy Farm Protecting an Aquaculture Installation." Energies 11, no. 8 (August 13, 2018): 2109. http://dx.doi.org/10.3390/en11082109.
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This paper assesses the impact of a farm of wave energy converters on a nearby offshore aquaculture installation and on the nearshore dynamics. The coastal area targeted is Aguçadoura, located in the north of Portugal, where the world’s first wave farm operated in 2008. The study is focused mainly on the evaluation of the sheltering effect provided by the wave farm to the aquaculture cages. Furthermore, the possible impact on the coastal wave climate of such an energy park is also evaluated. These objectives are accomplished by performing simulations, corresponding to the wave conditions, which are more often encountered in that coastal environment. The SWAN model (Simulating WAves Nearshore) was adopted for this. Various transmission scenarios are considered to account for the impact of different types of wave converter farms on the downwave conditions. The results show that such a wave energy park might have a clear positive impact on the wave conditions fish farm installed downwave and it might also have a beneficial influence on shoreline dynamics from the perspective of coastal protection.
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Atalah, J., LM Fletcher, IC Davidson, PM South, and BM Forrest. "Artificial habitat and biofouling species distributions in an aquaculture seascape." Aquaculture Environment Interactions 12 (November 19, 2020): 495–509. http://dx.doi.org/10.3354/aei00380.
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The global proliferation of marine artificial habitats is rapidly altering the physical structure of coastlines, with knock-on effects on physical, chemical, and ecological processes at seascape scales. Ecological consequences of maritime sprawl associated with aquaculture are poorly understood, despite the fact that these suspended structures are particularly prone to biofouling, which can affect the industry and seascape around it. We characterised seascape-scale spatial and temporal distribution patterns of 10 biofouling taxa in relation to the presence and distance to Perna canaliculus mussel farms in New Zealand’s largest aquaculture region. Seven of 10 taxa had significantly higher cover on farms than in natural habitats throughout the region. The cover of 4 of those 7 taxa, including the high-profile pests Mytilus galloprovincialis and Undaria pinnatifida, exponentially decreased with distance from the nearest farm, while some taxa were absent from natural habitats (e.g. the ascidian Ciona robusta). In contrast, several opportunistic macroalgal species, such as Cladophora ruchingeri and Pylaiella littoralis, had colonised extensive areas of natural habitat. Our results suggest that biofouling is a persistent issue on mussel farms and that farm structures may act as reservoirs or ‘stepping stones’ for the dispersal of potential marine pests. These distributional and dispersal patterns can inform integrated pest management efforts focusing on spatial management strategies, such as ‘firebreaks’ in farm connectivity, avoidance of pest hotspots, and farm fallowing.
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Prodhan, Md Masudul Haque, and Md Akhtaruzzaman Khan. "Management practice adoption and productivity of commercial aquaculture farms in selected areas of Bangladesh." Journal of the Bangladesh Agricultural University 16, no. 1 (April 30, 2018): 111–16. http://dx.doi.org/10.3329/jbau.v16i1.36491.
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Adoption of scientific management practice is the pre-condition for increasing productivity in any farm business. This study estimates the level of scientific aquaculture management practice (SAMP) adoption, factor affecting adoption and its relation with productivity. Sixty aquaculture farms were selected from 3 upazilas of Mymensingh district of Bangladesh. Adoption level was measured by following Sengupta (1967) while Tobit regression was used to assess the determinants of adoption level. Polynomial regression was employed to show the relationship among farm size, adoption level and productivity. Result revealed that average SAMP adoption level was 54% where 53% farmers were medium adopter. Training, experience, education and extension service had significant positive effect on level of adoption. Productivity was significantly higher for those farmers who adopted more SAMP. Adoption level, productivity and profitability of small farmers were higher than that of large farmers. The study suggests farmers for adopting scientific management practices in order to increase the aquaculture productivity and profitability.J. Bangladesh Agril. Univ. 16(1): 111-116, April 2018
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Macusi, Edison D., Darshel Ester P. Estor, Elaine Q. Borazon, Misael B. Clapano, and Mudjekeewis D. Santos. "Environmental and Socioeconomic Impacts of Shrimp Farming in the Philippines: A Critical Analysis Using PRISMA." Sustainability 14, no. 5 (March 3, 2022): 2977. http://dx.doi.org/10.3390/su14052977.
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Shrimp aquaculture is under pressure to increase its production to meet the growing demand for food from a growing population. In the Philippines, aquaculture has experienced the shift from milkfish to prawn, with its attractive marketable price. This intensification has led to negative and positive impacts, which have raised a range of environmental and socioeconomic problems. This paper reviews the environmental and socioeconomic challenges that the shrimp aquaculture industry faces using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method. We examine the gaps and the changes that are required to revitalize the industry. We examine and assess the impacts of shrimp culture on the environment, e.g., shrimp farm management, marine pollution, disease outbreaks, and the social, economic, and climate change impacts. The presence of viral diseases, such as White Spot Syndrome Virus (WSSV), Monodon Baculovirus (MBV), Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV), Hepatopancreatic Parvovirus (HPV), and Yellow Head Virus (YHV), have caused approximate losses in the industry of 40,080 mt in 1997, and 51,000 mt in 2014. Recommended strategies and policy changes are considered for the improvement of shrimp aquaculture, including disease management, the adoption of good aquaculture practices, proper environmental monitoring, sustainable practices at the farm level, and priorities for cooperation among the concerned government agencies and local governments, as well as the involvement of state universities and colleges, for better management practices.
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Munroe, DM, TM Grothues, NE Cleary, J. Daw, and S. Estrada. "Oyster aquaculture does not impede spawning beach access for Atlantic horseshoe crabs Limulus polyphemus." Aquaculture Environment Interactions 12 (February 27, 2020): 81–90. http://dx.doi.org/10.3354/aei00351.
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Farms for eastern oyster Crassostrea virginica, which are commonly located along shallow estuarine shores of the eastern USA, use a range of farm equipment and require regular access to care for and harvest oyster livestock. In some cases, these farms are located in areas used by Atlantic horseshoe crabs Limulus polyphemus as they come ashore during spring to spawn. The sandy shores of the Delaware Bay host the largest spawning aggregations of this species in the world. Limited studies have examined interactions between horseshoe crabs and intertidal oyster farms, and concern has been raised about the horseshoe crab’s ability to traverse oyster farms to reach spawning habitat. This study examines potential farm interactions with horseshoe crabs in Delaware Bay during the 2018 and 2019 crab spawning season. Our studies included a range of experiments and surveys during high and low tide to observe crab abundance and behavior at rack-and-bag oyster farm and non-farm sites. In all cases, results indicated that crabs can successfully traverse rack-and-bag farms and reach spawning beaches. Crabs do not differentially use farm versus non-farm areas, and crab behavior is relatively unaltered by farm gear. These results provide important context for developing frameworks for managing ecological interactions among farms and wildlife species of concern.
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Maar, M., J. Larsen, M. von Thenen, and K. Dahl. "Site selection of mussel mitigation cultures in relation to efficient nutrient compensation of fish farming." Aquaculture Environment Interactions 12 (August 6, 2020): 339–58. http://dx.doi.org/10.3354/aei00361.
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In the Baltic Sea, rainbow trout Oncorhynchus mykiss is the most common species used in marine aquaculture, but further increase in production is problematic due to environmental legal regulations, especially in the coastal zone. A solution could be to place the fish farms offshore and use mussel mitigation cultures to extract nutrients released from the fish farms. We used 3D ecological modeling to identify suitable locations for mussel mitigation cultures in relation to nutrient pollution from a fish farm in the inner Danish waters. The model results showed that potential mussel harvest depended on the food flux following a saturation curve with a maximum yield of 2100 to 2600 t wet weight and then stabilized at around 2100 to 2600 t wet weight of mussels. A single mussel farm (36 ha) can potentially remove 17-31% of the released nitrogen from the fish farm. Mussel farms located inside or a few km outside the coastal areas receiving the highest nutrient inputs from the fish farm were found to be the most suitable among the tested sites. In contrast, co-location with the fish farm was not advisable due to the negative benthic impact below the farms. However, it is up to the managers to decide which positive and negative effects should receive the most attention, given the present need for protection of water bodies and habitats and in relation to other activities in the area. This study demonstrates that modeling can support management decisions with respect to site selection of aquaculture and provide the needed data on far-field and local environmental effects from integrated aquaculture.
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Senyo Dogbe, Bright. "The Impact of Cooperative Membership on Rural Households’ Farm Income: The Case of Aquaculture Farmers in the Eastern Region of Ghana." Journal of Advanced Research in Economics and Administrative Sciences 3, no. 2 (July 25, 2022): 18–32. http://dx.doi.org/10.47631/jareas.v3i2.498.
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Purpose: This study examined the effect of farmers’ involvement in aquaculture cooperatives on rural households’ farm income in the Eastern Region of Ghana. Approach/Methodology/Design: The data were gathered through questionnaires administered to four hundred (400) rural fish farming households. The endogenous switching regression (ESR) technique was used to resolve the self-bias of variables selection. For robustness of the results, Heckman selection model was later used to assess the treatment impact while accounting for endogeneity bias resulting from selection on unobservable variables. The heterogeneous analysis was performed to examine the impacts of cooperative involvement on rural fish farming households’ farm income. Findings: Based on the ESR outcomes, the study found that households’ credit access, extension services accessed by household heads, educational attainment by household heads, and household size significantly influence cooperative members’ farm income. However, farm (pond) size, household heads’ age, and households’ farming experience had no significant impact on cooperative members’ farm income. Using the problem confrontation index, the cooperative aquaculture farmers claimed that the deployment of primitive tools, high post-harvest losses, unavailability of improved feeds, high costs of chemicals, and low yield were the most severe obstructions in fish production. In contrast, the study established that the topmost pressing constraints confronting the non-cooperative member farmers were the inaccessibility to credit facilities, low productivity, high post-harvest losses, unavailability of improved feeds, and high costs of chemicals. Originality/value: This study highlighted that technical training, credit access, market outlets, bargaining power, input supplies, and increased prices of their products were the benefits the members derived from their involvement in aquaculture cooperatives in the study area.
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Bradbury, IR, S. Duffy, SJ Lehnert, R. Jóhannsson, JH Fridriksson, M. Castellani, I. Burgetz, et al. "Model-based evaluation of the genetic impacts of farm-escaped Atlantic salmon on wild populations." Aquaculture Environment Interactions 12 (February 13, 2020): 45–59. http://dx.doi.org/10.3354/aei00346.
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Genetic interactions (i.e. hybridization) between wild and escaped Atlantic salmon Salmo salar from aquaculture operations have been widely documented, yet the ability to incorporate predictions of risk into aquaculture siting advice has been limited. Here we demonstrate a model-based approach to assessing these potential genetic interactions using a salmon aquaculture expansion scenario in southern Newfoundland as an example. We use an eco-genetic individual-based Atlantic salmon model (IBSEM) parameterized for southern Newfoundland populations, with regional environmental data and field-based estimates of survival, to explore how the proportion of escapees relative to the size of wild populations could potentially influence genetic and demographic changes in wild populations. Our simulations suggest that both demographic decline and genetic change are predicted when the percentage of escapees in a river relative to wild population size is equal to or exceeds 10% annually. The occurrence of escapees in southern Newfoundland rivers under a proposed expansion scenario was predicted using river and site locations and models of dispersal for early and late escapees. Model predictions of escapee dispersal suggest that under the proposed expansion scenario, the number of escapees is expected to increase by 49% and the highest escapee concentrations will shift westward, consistent with the location of proposed expansion (20 rivers total >10% escapees, max 24%). Our results identify susceptible rivers and potential impacts predicted under the proposed aquaculture expansion scenario and illustrate how model-based predictions of both escapee dispersal and genetic impacts can be used to inform both aquaculture management decisions and wild salmon conservation.
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Cullain, Nakia, Reba McIver, Allison L. Schmidt, Inka Milewski, and Heike K. Lotze. "Potential impacts of finfish aquaculture on eelgrass (Zostera marina) beds and possible monitoring metrics for management: a case study in Atlantic Canada." PeerJ 6 (October 5, 2018): e5630. http://dx.doi.org/10.7717/peerj.5630.
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Eelgrass (Zostera marina) has been designated an Ecologically Significant Species in Atlantic Canada. The development and rapid expansion of netpen finfish aquaculture into sensitive coastal habitats has raised concerns about the impacts of finfish aquaculture on eelgrass habitats. To date, no studies have been done in Atlantic Canada to examine these impacts or to identify potential monitoring variables that would aid in the development of specific conservation and management objectives. As a first step in addressing this gap, we examined differences in environmental variables, eelgrass bed structure and macroinfauna communities at increasing distances from a finfish farm in Port Mouton Bay, a reference site in adjacent Port Joli Bay, and published survey results from other sites without finfish farms along the Atlantic Coast of Nova Scotia. Drawing on research done elsewhere and our results, we then identified possible metrics for assessing and monitoring local impacts of finfish aquaculture on eelgrass habitats. Our results suggest some nutrient and organic enrichment, higher epiphyte loads, lower eelgrass cover and biomass, and lower macroinfauna biomass closer to the farm. Moreover, community structure significantly differed between sites with some species increasing and others decreasing closer to the farm. Changes in the macroinfauna community could be linked to observed differences in environmental and eelgrass bed variables. These results provide new insights into the potential impacts of finfish aquaculture on eelgrass habitats in Atlantic Canada. We recommend a suite of measures for assessment and monitoring that take into account response time to disturbance and account for different levels of eelgrass organizational response (from physiological to community).
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KREEGER, KAREN. "Down on the Fish Farm: Developing Effluent Standards for Aquaculture." BioScience 50, no. 11 (2000): 949. http://dx.doi.org/10.1641/0006-3568(2000)050[0949:dotffd]2.0.co;2.
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OSBORN, A., and J. HENRY. "The role of aquaculture farm biosecurity in global food security." Revue Scientifique et Technique de l'OIE 38, no. 2 (September 1, 2019): 571–87. http://dx.doi.org/10.20506/rst.38.2.3005.
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Shahriar, Md Sumon, and John McCulluch. "A Dynamic Data-driven Decision Support for Aquaculture Farm Closure." Procedia Computer Science 29 (2014): 1236–45. http://dx.doi.org/10.1016/j.procs.2014.05.111.
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Molnar, Joseph J., Alphonse Rubagumya, and Vewonyi Adjavon. "The Sustainability of Aquaculture as a Farm Enterprise in Rwanda." Journal of Applied Aquaculture 1, no. 2 (December 1991): 37–62. http://dx.doi.org/10.1300/j028v01n02_03.
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Lin, Jun, Chunyan Li, and Shouyu Zhang. "Hydrodynamic effect of a large offshore mussel suspended aquaculture farm." Aquaculture 451 (January 2016): 147–55. http://dx.doi.org/10.1016/j.aquaculture.2015.08.039.
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Cherdantsev, V. P., T. M. Svechnikova, and M. V. Tronina. "Аrtificial intelligence technologies in aquaculture." Problems of Fisheries 23, no. 3 (September 30, 2022): 171–78. http://dx.doi.org/10.36038/0234-2774-2022-23-3-171-178.
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The paper presents an overview of foreign practices of using artificial intelligence (AI) technologies in fish farming or aquaculture. It is noted how effective the management of a fish farm can become if there is access to new information that would have gone unnoticed without the use of artificial intelligence. Taking into account the fact that the pace of development of aquaculture in Russia is very insignificant and significantly lags behind foreign analogues, and also taking into account the active processes of digitalization of all spheres of the economy in our country, it seems that a review of foreign practice of using AI in aquaculture will further create its own resource base in the direction of AI for the agro-industrial sector.
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Berg, Håkan, Deogratias Mulokozi, and Lars Udikas. "A GIS Assessment of the Suitability of Tilapia and Clarias Pond Farming in Tanzania." ISPRS International Journal of Geo-Information 10, no. 5 (May 20, 2021): 354. http://dx.doi.org/10.3390/ijgi10050354.
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Aquaculture production in Tanzania has increased in recent years, responding to an increased demand for fish, but the scale and productivity of smallholder aquaculture remains below the level needed to support significant sector growth in Tanzania. This study assesses, through geospatial analyses, the suitability for freshwater pond farming of Oreochromis niloticus and Clarias gariepinus in Tanzania, by assessing the geographical distribution of seven criteria (water availability, water temperature, soil texture, terrain slope, availability of farm inputs, potential farm-gate sales, and access to local markets) identified as important for fish pond farming. The criteria were developed and standardized from 15 sub-criteria, which were classified into a four-level suitability scale based on physical scores. The individual weights of the different criteria in the overall GIS suitability assessment were determined through a multi-criteria evaluation. The final results were validated and compared through field observations, interviews with 89 rural and 11 urban aquaculture farmers, and a questionnaire survey with 16 regional fisheries officers. Our results indicate that there is a good potential for aquaculture in Tanzania. Almost 60% of Tanzania is assessed as being suitable and 40% as moderately suitable for small-scale subsistence pond farming, which is the dominating fish farming practice currently. The corresponding figures for medium-scale commercial farming, which many regions expect to be the dominating farming method within ten-years, were 52% and 47% respectively. The availability of water was the most limiting factor for fish pond farming, which was confirmed by both farmers and regional fisheries officers, and assessed as being “suitable” in only 28% of the country. The availability of farm-gate sales and local markets were “moderate suitable” to “suitable” and were seen as a constraint for commercial farms in rural areas. The availability of farm inputs (agriculture waste and manure) was overall good (26% very suitable and 32% suitable), but high-quality fish feed was seen as a constraint to aquaculture development, both by farmers and regional fisheries officers. Soil, terrain, and water temperature conditions were assessed as good, especially at low altitudes and in regions close to the sea and south of Lake Victoria.
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Sukmaniara, Maria. "Eco-Friendly Fish Farming: Responsibly-Sustainable Aquaculture Among ASEAN Countries." Sociae Polites 23, no. 1 (August 28, 2022): 294–312. http://dx.doi.org/10.33541/sp.v23i1.4114.
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Oceans were regarded as limitless source of fish and surmised that their supply was enough for the growing population. However, the fish sustenance of the seas was transcended by the increasing population's demands. Through the decade, wild fish stocks progressively depleted. Thus, aquaculture has emerged to address capture fisheries insufficiency. This research study aimed to assess aquaculture through its sustainability and effects on the ecosystem of ASEAN countries. This study utilized a Descriptive-Quantitative research design which gathers quantifiable information to describe the object of the study and how it could improve. It also employed data mining techniques. It is determined that Vietnam has the largest aquaculture farm while Indonesia boasts the highest fish production. Most of the ASEAN countries' employment rates in aquaculture-agriculture only amount to less than 15%. The majority of the countries have good aquaculture economies, while some are dependent on the importation of aquaculture products. The five leading ASEAN countries in aquaculture are Indonesia, Vietnam, Thailand, Philippines, and Myanmar, respectively. Aquaculture reduces fishing pressure on wild stocks but uses lots of shared resources that may hinder environment. “Responsible Aquaculture Standards in Vietnam" is the proposed action plan to minimize the negative outcomes of aquaculture in the Philippines.
Keywords: Aquaculture, Sustainability, Ecosystem
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A'isyah, Siti. "BURUH TANI DALAM HUKUM POSITIF INDONESIA:." MAQASHID Jurnal Hukum Islam 5, no. 1 (August 5, 2022): 30–37. http://dx.doi.org/10.35897/maqashid.v5i1.792.
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Farm labor or peasant is an urgent component in agriculture, farm and animal husbandry or aquaculture. Farm workers or peasants also have unique and different characteristics compared to industrial workers, especially in terms of form and rhythm of work. However, farm workers do not get specific protection in positive law in Indonesia. This article explores the legislation in Indonesia to see the position of farm workers in positive law. The search results, supported by the elaboration of historical facts, show that agricultural laborers in Indonesia do not have a specific legal protection. Meanwhile, the facts of current agricultural developments show that farm workers increasingly need this protection in line with the tendency of agricultural globalization.
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Yoo, Sang-Lok, and Jong-Chul Jeong. "Safe Navigation Distance Between Marine Routes and Aquaculture Farms in South Korea Using Gaussian Mixture Model." Sensors 20, no. 5 (February 25, 2020): 1246. http://dx.doi.org/10.3390/s20051246.
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The purpose of this study was to determine the minimum separation distance between aquaculture farms and ship traffic to prevent damage to either the farms or the vessels. A high-risk area in South Korea was selected for the study by overlapping shipping routes with fisheries using satellite and aerial photographs. The annual frequency of damage was calculated based on a probability distribution applied to the sea area, and a safe distance between the aquaculture farms and the traffic was derived. The Kolmogorov–Smirnov (KS) test was conducted to determine whether the Gaussian mixture model (GMM) follows the data of this study. It was found that a safe distance of at least 1000 m is needed to avoid farm or vessel damage. Then, it is possible to prevent damage to vessel propellers and fisheries locating aquaculture farms at the minimum safe distance from the traffic routes. For protection and security of these structures, the installation of a set of wirelessly Internet of Underwater Things (IoUT) sensors that can transmit the farm location to the ship’s navigator were suggested.
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Nath, Rupak, S. M. Kharbuli, and R. N. Bhuyan. "Integrated Aquaculture: Road ahead for sustainable rural development in Meghalaya." Spectrum: Science and Technology 6, no. 1 (December 15, 2019): 29–35. http://dx.doi.org/10.54290/spect.2019.v6.1.0004.
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Abstract: The unitary concept of producing crop is gradually changing to integrated system, with a view to integrate different farming components viz. fishery, live stock, horticulture to produce fish, eggs, meat and vegetables from the same farm. The major benefit of integrated system is utilization of resources effectively and recycling of waste within the farm and thus, ultimately maintaining ecological balance. Meghalaya a state located in the North Eastern India, characterized by hills and plateaus interspersed with valley lands in the foot hills. People of Meghalaya are predominantly dependent on agriculture and allied sector. Fish a very valuable source of protein, comprise an important part of the diet of local tribal people. As local wild fish supplies from natural water bodies diminishing and relatively limited aquaculture, fish production in the state is insufficient to satisfy the present demand of fish in Meghalaya. The present fish production in the state is 4.77 thousand tonnes against the demand estimated 30 thousand tonnes per annum. Massive demand of the fish is providing a market opportunity for fish producers in the state. The present study categorized integrated aquaculture as an important and promising enterprise for rural farming households of Meghalaya to maximize their farm income, providing nutritional security and as a whole to achieve sustainable development in the rural sector. Key words: Integrated aquaculture, sustainable development, hilly area
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Marlida, Rini. "Bioflok sebagai Solusi Mengatasi Permasalahan Lingkungan untuk Akuakultur Masa Depan Berkelanjutan : Sebuah Tinjauan." RAWA SAINS : JURNAL SAINS STIPER AMUNTAI 10, no. 1 (May 31, 2020): 38–44. http://dx.doi.org/10.36589/rs.v10i1.116.
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Aquaculture is currently the foundation of the world's animal protein provider. The sustainability of this sector is greatly influenced by business governance which must prioritize environmentally friendly aspects. Nutrient enrichment waste and the spread of fish and other aquatic organisms are significant issues present in aquaculture systems throughout the world today, especially intensive aquaculture. The purpose of writing this article is to provide an overview of biofloc as a solution in overcoming environmental problems for a sustainable future aquaculture. Intensive aquaculture applies high density maintenance and artificial feeding. The system leads to environmental problems because a large amount of waste produced contains solids and nutrients that accumulate into pollutants that cause eutrophication and toxins for aquatic organisms. Biofloc technology is a new approach to reduce the waste of aquaculture activities. In this system, heterotrophic bacteria and algae are grown together in flocks under controlled conditions with no or minimal water exchange. Biofloc is a nutrient package that can be utilized directly by farm animals. Biofloc also acts as biocontrol. Biofloc technology can help overcome problems in intensive aquaculture.
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O. Sulaiman, O., and M. .F. Akhir. "Metocean Environment for Aquaculture Seaweed Farming System." Biosciences, Biotechnology Research Asia 14, no. 2 (June 25, 2017): 509–12. http://dx.doi.org/10.13005/bbra/2472.
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ABSTRACT: The study and analysis of metocean data is essential in predicting future environmental conditions. In relation with design nearshore structure for of seaweed cultivation, this study focuses on the collection and analysis of metocean data of potential sites in Malaysia so as to prevent under-designing and over-designing of the structure. The study investigates the metocean environment for the spatial design and monitoring of a seaweed aquaculture farm at monsoons proton East Coastal region.
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Zaitseva, Yuliya Vladimirovna, Dmitriy Dokolin, and Il'ya Zlobin. "Intestinal microbiocenos of rainbow trout in the conditions of a cage farm." Agrarian Bulletin of the 227, no. 12 (January 10, 2023): 42–53. http://dx.doi.org/10.32417/1997-4868-2022-227-12-42-53.
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Abstract. The rapid growth of the aquaculture industry using modern intensive farming methods has led to a number of problems related to water quality and the spread of infectious diseases in fish. The intestinal physiological microbiota of fish and the surrounding aquatic environment forming an ecosystem, the balance of which is a key factor in maintaining the health of aquaculture. However, optimizing the microbiota is still a challenging task due to a lack of studies about the dominant microorganisms in aquacultures and the influence of environmental factors on it. The aim of this work was to study the structure and taxonomic composition of the cultivatable bacterial gut community of the rainbow trout Oncorhynchus mykiss under the conditions of the “Yaroslavskaya Trout” cage farm. Methods. To identify the isolated strains and characterize the composition of common bacterial communities were used phenotypic and biochemical characteristics, as well as amplification and sequencing of 16S rRNA gene fragments and subsequent phylogenetic analysis. Scientific novelty. Data on the taxonomic diversity of the cultivated rainbow trout gut microbiome have been obtained. A comparative analysis of fish intestinal microbiocenoses and the surrounding aquatic environment was carried out. Results and practical significance. Gammaproteobacteria was the most abundant bacteria in the structure of the studied microbial communities. Bacteria of the genera Pseudomonas, Stenotrophomonas, and Aeromonas were found in the microbiome of both the rainbow trout intestines and the surrounding aquatic environment, which are opportunistic pathogens and can lead to an outbreak of bacterial infections under stressful conditions. However, studies have shown that the surrounding aquatic microbiome does not always reflect the microbiome of aquatic organisms. A comparative analysis of the freshwater microbiomes and the gut microbiome of rainbow trout revealed the ability of the host organism to concentrate beneficial probiotic microorganisms even under conditions of pathogenic presure. The resulting collection of microorganisms can be further used for screening potential probiotic cultures.
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Grant, Jon, Michelle Simone, and Tara Daggett. "Long-term studies of lobster abundance at a salmon aquaculture site, eastern Canada." Canadian Journal of Fisheries and Aquatic Sciences 76, no. 7 (July 2019): 1096–102. http://dx.doi.org/10.1139/cjfas-2017-0547.
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Wild lobster (Homarus americanus) abundance was monitored before, during, and after salmon (Salmo salar) aquaculture production in a bay on Grand Manan Island, New Brunswick, Canada, in an 8-year survey, 2008 to 2015. Diver transects and free-area spot-dives were used to measure the carapace length and determine sex (including berried state) of each lobster encountered both inside (farm) and outside (reference) the lease boundaries. In pairwise comparisons of each sampling date, there was no significant difference between the number of lobsters inside the salmon farming area versus a nearby reference site and no significant difference in the number of berried females inside or out of the farm lease area. Combining data from all lobster surveys (farm and reference sites) indicated an increase over 8 years, similar in slope to the increase of the trap fishery in Lobster Fishing Area (LFA) 38. These results indicate that the fish farm had no obvious impact on lobster density at any point in the salmon production cycle and that inshore lobster abundance followed trends similar to those of the general fishery of LFA 38.
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Gray, M., N. Barbour, B. Campbell, AJ Robillard, A. Todd-Rodriguez, H. Xiao, and L. Plough. "Ecolabels can improve public perception and farm profits for shellfish aquaculture." Aquaculture Environment Interactions 13 (January 28, 2021): 13–20. http://dx.doi.org/10.3354/aei00388.
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Ecolabels are increasingly being used to notify consumers that the labeled product imposes minimal harm to the environment or other natural resources. A growing number of studies have signaled that consumers respond to these labels, which can promote environmentally friendly production of consumable goods and incentivize growers to produce sustainably sourced goods. Shellfish are noticeably absent among these labeled products, but they are arguably the most sustainable source of animal protein. Additionally, while in the water, oysters and other shellfish provide numerous ecosystem services that improve environmental quality. We argue that shellfish aquaculture is uniquely positioned to take advantage of ecolabeling to improve public perception and steer consumers towards a highly sustainable source of animal protein. However, we also argue more research is needed to better understand how ecosystem services vary among different production modes of oyster aquaculture to ensure products are correctly labeled and inspire consumer confidence.