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1
Alfiansah, Yustian Rovi. "Aggregates in aquatic ecosystems and implications for aquacultures." Marine Research in Indonesia 45, no. 2 (December 31, 2020): 87–96. http://dx.doi.org/10.14203/mri.v45i2.584.
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Agglomerations of suspended particulate matter serve various roles in aquatic ecosystems. They participate in nutrient and energy fluxes and are involved in important food web processes. While comprehensive studies on aggregates are available from natural freshwater and marine ecosystems, little is known about the roles of aggregates in aquacultures, particularly in shrimp pond farming. As particle-rich systems, shrimp ponds and marine aquaculture (mariculture) areas constitute interesting objects for aggregate studies, particularly as a source of natural feed, particle fluxes, microbial communities, including pathogenic bacteria, and possible vector of disease widespread. The aims of this review are i) to compile the current knowledge on the role of aggregates in aquatic ecosystems, particularly in aquaculture areas covering advantages and negative side effects of aggregates in aquacultures, ii) to explore the role of aggregates in disease ecology, and iii) perspective of aquaculture management in the context of aggregate utilization and management. Since Southeast Asia, especially Indonesia, is among the most important regions for aquaculture activities, this review focuses on Indonesian aquacultures. Although aquacultures produce important amounts of aggregates, including its associated microbial communities, they are rarely investigated in Indonesian aquacultures, particularly in shrimp pond farming. In contrast, most of the studies focused on bacterial cultivation and utilization of isolates for aquacultures. Thus, understanding the ecological roles of aggregates in aquacultures may support the improvement of aquaculture management and yields.
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Islam, MJ, A. Akter, M. Kamrujjaman, A. Siddiqa, and S. Aktar. "Assessment Of Pond Water Quality Of Thakurgaon Sadar Upazila For Fish Production." International Journal of Agricultural Research, Innovation and Technology 3, no. 1 (August 2, 2013): 29–34. http://dx.doi.org/10.3329/ijarit.v3i1.16052.
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During dry season, physico-chemical properties of waters from 30 ponds of Thakugaon Sadar Upazila, Thakurgaon, Bangladesh were analyzed for its quality and suitability for aquaculture. The variation in the physico-chemical parameters of the aquaculture ponds above or below standard values has potential effects on the health and productivity of aquaculture. Overall, we found that the pond water were acidic to neutral in nature (pH varied from 6.0 to 7.2) and could be suitable for aquaculture. The dissolved oxygen (DO) concentration was suitable for fish production but more DO level should be present for all aquatic life especially for fish production. Chemical oxygen demands (COD) of all pond waters were within the permissible limits for fish production. The temperature values were remained within the standard values in all the aquaculture ponds. Pond water samples contained Ca2+, Mg2+ and Na+ as the dominant cations and HCO3- and Cl- were the dominant anions. All samples were within soft class regarding hardness. Based on Zn2+, Mn2+, Fe3+, SO42-, NO3- and Cl- all pond water samples were within the safe limit for fish production during dry period. Int. J. Agril. Res. Innov. & Tech. 3 (1): 29-34, June, 2013 DOI: http://dx.doi.org/10.3329/ijarit.v3i1.16052
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Das, Partha Sarathi, M. Mahfujul Haque, M. Mehedi Alam, Shamima Akter, and M. Ruhul Amin. "An understanding on the feasibility of aquaponics in intensive aquaculture pond." Research in Agriculture Livestock and Fisheries 2, no. 1 (April 27, 2015): 143–50. http://dx.doi.org/10.3329/ralf.v2i1.23046.
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The study was conducted in a peri-urban village named, Panchpy under Gafargaon upazila of Mymensingh district with stinging catfish (Heteropneustes fossilis ) and carps ponds to produce aquaponics vegetable kolmi (water spinach, Ipomoea aquatica ) towards using waste substances of intensive stinging catfish ponds. Aquaponic plant (water spinach, Ipomoea aquatica ) was grown in floating trays in the selected ponds. The water quality parameters including, temperature, pH, dissolved oxygen, nitrite and ammonia were measured during study period.The level of ammonia was higher in catfish pond compared to carps pond water. Inversely, the dissolved oxygen content of catfish pond water was lower than that of carps pond. In the stinging catfish pond, the mean value (± SE) of plant length, weight, number of branches and leaves were recorded at 27.67 ± 1.76, 62.67 ± 2.03, 13.00 ± 1.15 and 55.33 ± 3.18, respectively. The corresponding values 19.33 ± 1.45, 46.67 ± 1.86, 9.33 ± 1.45 and 43.00 ± 2.88, respectively in carps pond, were significantly lower than that of catfish pond. Overall the percent weight gain of kolmi was higher in catfish pond. A positive correlation was found between the length and weight of kolmi produced in both catfish and carp ponds, however R2 value of that relationship was higher for catfish pond due to higher level of available waste nutrients in water. This indicates that the potential of aquaponics research and development in intensively feed catfish aquaculture ponds at the farmer level that can feed the growing population in both rural and urban areas of Bangladesh.Res. Agric., Livest. Fish.2(1): 143-150, April 2015
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Kshatri, Jyothi, C. V. Rao, and Vijaya Saradhi Settaluri. "Study of Water Quality and Biochemical Characterization of Bacterial Isolates from Water Samples of Ponnagi Area in Krishna District." Biosciences, Biotechnology Research Asia 14, no. 3 (September 25, 2017): 1129–34. http://dx.doi.org/10.13005/bbra/2551.
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ABSTRACT: Aquaculture also known as fish farming is one of the methods for breeding rearing and harvesting of freshwater and marine species of fish and shellfish, in ponds, rivers, lakes and oceans. In this article an attempt has been put forth to study and apply techniques that could help in improving the water quality in aquaculture ponds and to further understand the role played by enzymes and probiotics by means of bio remedial procedures and protocols. Aquaculture productivity needs to be improved to cater the ever-increasing demand, no doubt, but simultaneously a proactive role for environment protection is required. The gathering of organic wastes worsens the water quality and reduces the level of dissolved oxygen in the fish aquaculture ponds. This further increases the formation of toxic metabolites such as ammonia (NH3), nitrite (NO2-) and hydrogen sulphide (H2S). Hence, NH4+ or NO3- removal processes (nitrification and denitrification) become essential for the pond water quality. This can be carried out by applying different types of nitrifying and denitrifying bacteria such as Nitrosomonas, Nitrobacter and Alcaligenes. In the present investigation, 2 earthen ponds were selected from Ponnagi near Eluru in Krishna district, Andhra Pradesh, India. One pond (Pond A) was treated with probiotics having Nitrosomonas, Nitrobacter and Alcaligenes sps. And the other pond (Pond B) was kept as control. During the culture period, the water samples were collected from probiotics treated and control ponds for analysis of water quality parameters. The current study is aimed to focus on the changes in water quality and biochemical characterization of bacterial isolates from water samples of Ponnagi area in probiotic treated ponds and to compare the results with ponds not treated with probiotics.
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Tao, Ling, Jian Qiang Zhu, and Gu Li. "Ecological Floating Bed Applied to Control Nutrients and Cyanobacteria Bloom in the Pond Water under Intensive Aquaculture." Advanced Materials Research 955-959 (June 2014): 638–42. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.638.
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An innovative ecological floating bed was designed and used for intensive aquaculture pond to improve water quality, which integrated porous ceramsite, soil substrate and plants. Put the floating bed into intensive aquaculture ponds, and investigate the nutrients and phytoplankton community structure in the ponds for a whole culture cycle. The results showed that TP and CODMn were significantly lowered in those ponds with innovative ecological floating bed, and their reduction rate is separately 39.52% and 22.86%; Cyanophyta and Microcystis densities were significantly reduced by 39.52% and 22.86% in July. The study also indicated that the innovative ecological floating bed is high efficiency for intensive aquaculture pond in control of the nutrient and cyanobacteria bloom.
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Turkowski, Konrad. "Fish Farmers’ Perception of Ecosystem Services and Diversification of Carp Pond Aquaculture: A Case Study from Warmia and Mazury, Poland." Sustainability 13, no. 5 (March 5, 2021): 2797. http://dx.doi.org/10.3390/su13052797.
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Ecosystem services, multifunctionality and diversity play a particular role in the management of carp pond aquaculture. These three concepts have been increasingly considered in sustainable aquaculture science and policymaking. However, the understanding and acceptance of sustainable aquaculture by fish farmers is a prerequisite for the successful implementation of such a targeted policy. Research on a fish farmers’ perception of ecosystem services, multifunctionality and diversification of carp aquaculture was carried out in Warmia and Mazury, Poland. The results of interviews showed that farmers have a deep understanding of the ecosystem services and multifunctionality of carp ponds. Production services were indicated as the most important, but the role of ponds in the preservation of biodiversity was another highly valued service. The greatest diversity of the activities, and conviction of their significant impact on the profitability of carp pond farming, was observed on farms with ponds of 1 to 50 ha. In the case of larger farms, the assessment of such impact was more moderate. All surveyed farms provided educational services regarding the ecological values of the ponds. All pond users, regardless of their size, highly rated the need for financial support for the conservation and development of biodiversity.
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Stickney, Robert R. "Dynamics of Pond Aquaculture." Progressive Fish-Culturist 60, no. 3 (June 1998): 242–45. http://dx.doi.org/10.1577/1548-8640(1998)060<0243:uoafpt>2.0.co;2.
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Klemetson, Stanley L., and Gary L. Rogers. "Aquaculture pond temperature modeling." Aquacultural Engineering 4, no. 3 (January 1985): 191–208. http://dx.doi.org/10.1016/0144-8609(85)90013-5.
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Cong, Haibing, Feng Sun, Jun Wu, Yue Zhou, Qi Yan, Ao Ren, and Hu Xu. "Study on method and mechanism of deep well circulation for the growth control of Microcystis in aquaculture pond." Water Science and Technology 75, no. 11 (March 16, 2017): 2692–701. http://dx.doi.org/10.2166/wst.2017.159.
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In order to control the growth of Microcystis in aquaculture ponds and reduce its adverse effect on water quality and aquaculture, a production-scale experiment of deep well circulation treatment was carried out in an aquaculture pond with water surface area of 63,000 m2 and water depth of 1.6–2.0 m. Compared with the control pond, the experiment pond had better water quality as indicated by 64.2% reduction in chlorophyll a, and 81.1% reduction in algal cells. The chemical oxygen demand, total nitrogen, and total phosphorus concentration were reduced by 55.1%, 57.5%, and 50.8%, respectively. The treatment efficiency is mainly due to the growth control of Microcystis (i.e. cell reduction of 96.4%). The gas vesicles collapsing because of the water pressure was suggested to be the mechanism for Microcystis suppression by the deep well circulation treatment. The Microcystis lost its buoyancy after gas vesicles collapsed and it settled to the bottom of the aquaculture pond. As a result, the algae reproduction was suppressed because algae could only grow in the area with enough sunlight (i.e. water depth less than 1 m).
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Tran, Hanh Thi Hong, Tran Thi Hong Le, Hanh Vu Bich Dang, and Thanh Thi Duong. "APPLICATION GIS TO ESTABLISH THE MONITORING NETWORK OF WATER QUALITY BASA CATFISH POND AT AN GIANG." Science and Technology Development Journal 12, no. 2 (January 28, 2009): 97–110. http://dx.doi.org/10.32508/stdj.v12i2.2210.
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Nowadays, with developing all over country of aquaculture, basa catfish in the Mekong River delta, included An Giang province, has kept important position and contributed to economic development in the area. However, aquaculture activities has faced with environmental risk and aquacultures diseases that cause quality of fish pond water has usually pollution and reducing total of basa fish yeild. The water and sludge samples were conducted for six months in order to carry out the current status of water quality of fish ponds at My Hoa Hung commune at Long Xuyen city. Based on analysis results, proposing establishment dada base and monitoring network of surface water by using GIS that were conducted to improve surface water quality and identify the risks that may cause damage the environmental of basa fish ponds in this reserach.
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Ghangrekar, M. M., N. Kishor, and A. Mitra. "Sewage reuse for aquaculture after treatment in oxidation and duckweed pond." Water Science and Technology 55, no. 11 (June 1, 2007): 173–81. http://dx.doi.org/10.2166/wst.2007.352.
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The benefits of treating sewage by pond systems offer, through a simple and low-cost technology, social and commercial benefits, from the waste raw materials. The objective of this work was to demonstrate an effective treatment of the sewage by using natural treatment systems, and use of treated wastewater for aquaculture. The study was conducted for the sewage generated from the IIT Kharagpur campus. After characterization of the sewage, laboratory scale experiments were conducted for treatment using oxidation pond and duckweed pond. Survival and growth of fishes were observed in the experimental ponds using treated sewage. Based on the experimental results, full-scale treatment plant was designed to meet the aquaculture water quality. From the economics of the proposed full-scale plant, and utilization of the treated sewage for aquaculture, it is estimated that, the amount of Rs. 20,0000 can be generated every year. This amount recovered from the aquaculture will be more than the operating cost of the treatment plant, hence, making the operation of sewage treatment plant self sufficient. Use of a UASB reactor as the first stage treatment before sewage passes to the oxidation pond, can be a more attractive alternative because of less land requirement as compared to the oxidation pond alone, and additional land can be made available for aquaculture to increase revenue.
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Wang, Yi-Kuang, Chan-Chen Li, Kuang-Ying Huang, and Chin-Chu Tsai. "Can Aquaculture Ponds Be Managed as Foraging Habitats for Overwintering Water Birds? An Experimental Approach." Sustainability 12, no. 24 (December 10, 2020): 10335. http://dx.doi.org/10.3390/su122410335.
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Coastal wetlands have been gradually developed by aquaculture and other anthropogenic infrastructure, reducing the habitat for water birds. The traditional operation of shallow-pond milkfish (Chanos chanos) aquaculture in Taiwan may provide a model for aquaculture production that operates in harmony with overwintering water birds. The goal of this study was to test whether experimental water drawdown of aquaculture ponds, following the seasonal, traditional milkfish aquaculture, can create resource pulses that attract water birds in Tainan City in southern Taiwan. This experiment tested four types of aquaculture with potential for application: wild fish, no-feed tilapia, milkfish, and tilapia with feed. Ponds were surveyed every other day for water depth and water birds at least 37 times in four winters after water drawdown. In general, drawdown ponds created resource pulses that attracted higher feeding bird densities and numbers of species than control ponds in all aquaculture types. Milkfish ponds often had higher water birds in each year. Deep waders were sometimes the most abundant guild in the control, whereas shorebirds, shallow and deep waders were often higher in the drawdown treatment. Bird densities and numbers of species were correlated with water level, benthic biomass and water Chl a, but not with tilapia biomass. Species, such as Black-faced Spoonbills (Platalea minor), responded to water levels with the exception of Little Egrets (Egretta garzetta). The operation of seasonal, traditional shallow-pond milkfish aquaculture is suitable for foraging of water birds during the winter migratory bird season.
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The Truyen, Le, and Le Thanh Long. "Experimental operation and performance evaluation of waste remover in aquaculture ponds." Science & Technology Development Journal - Engineering and Technology 3, SI1 (April 12, 2020): First. http://dx.doi.org/10.32508/stdjet.v3isi1.730.
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The development of new technologies in automation to increase labor productivity has been increasingly enhanced in recent decades. The problem of cleaning water in shrimp ponds greatly affects the quality as well as shrimp production. Environmental pollution of shrimp farming is a matter of concern because the current waste treatment solutions are not yet thorough. A waste remover of shrimp waste combined with the pond bottom siphon method has been researched and developed to increase the ability to thoroughly handle waste generated in the culture environment. This device helps to automate the manual cleaning of the pond bottom by farmers. The device performs operations to clean waste, suck, filter, and remove waste from the culture environment. This device is self-propelled or manually controlled and operates in all weather conditions. This article introduces the process of testing and evaluating the efficiency of waste extraction equipment in shrimp ponds. The device was tested at a super-intensive shrimp farm and evaluated for operational efficiency. The experimental model consists of a shrimp pond operating a waste suction device, a control pond, an automatic monitoring system of water quality parameters (DO, H2S, NH3, pH, and temperature). Experimental ponds operating waste disposal equipment, control ponds are manually cleaned, other farming conditions of the two ponds are similar. The impacts of waste on the shrimp culture environment are determined through analyzing the results of measuring water quality criteria in the pond, thereby assessing the efficiency of waste removal of the equipment. The measurement results show that water quality parameters reach a value within the threshold if operating a waste suction device once per day. The benefits of waste remover operate to help save the cost of labor to clean the pond bottom, protect workers' health.
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Verdegem, M. C. J., and R. H. Bosma. "Water withdrawal for brackish and inland aquaculture, and options to produce more fish in ponds with present water use." Water Policy 11, S1 (March 1, 2009): 52–68. http://dx.doi.org/10.2166/wp.2009.003.
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This paper reviews freshwater use in inland and coastal pond aquaculture, and focuses on options to increase productivity while reducing water use. Total freshwater use depends on system-associated and feed-associated water losses. System-associated water losses depend on total area, evaporation, infiltration and water replacement. About 8,750,000 ha freshwater and 2,333,000 ha brackish water ponds are in use today. Total water withdrawal in freshwater aquaculture is estimated at 16.9 m3/kg production, representing 429 km3/yr, which is 3.6% of flowing water globally. Infiltration and replacement water recharges aquifers; if these losses are clean, their re-use decreases aquaculture-related water withdrawal by nearly 60%. A further reduction in freshwater use in aquaculture can come from intensification and aquafeed development. The goal should be to feed the pond, not the fish. A tripling of average pond production should be possible, without increasing total freshwater use. Such improvements will also benefit brackish water aquaculture, which could in turn further reduce freshwater use by increasing the productivity of saline systems.
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Rashid, Ibrahim, and Mahmudul Hasan Mithun. "Guidelines for Freshwater Pond Management in Bangladesh." Bangladesh Journal of Multidisciplinary Scientific Research 2, no. 2 (June 28, 2020): 1–9. http://dx.doi.org/10.46281/bjmsr.v2i2.645.
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The pond aquaculture sector in Bangladesh expands rapidly. Total fish production from pond aquaculture increasing day by day. Bangladesh ranks fifth in aquaculture production and becomes fourth in the tilapia production in the world. Total fish production in Bangladesh was about 4.27 million MT in 2017-18 fiscal years and the pond aquaculture production was about 1.9 million MT which contributes about 44.43% of the total fisheries production in 2017-18. That means pond aquaculture contributes a lot in Bangladesh fisheries sectors. For getting proper outcome from the pond aquaculture some basic guidelines should be followed during pre-stocking, stocking, and post stocking management of freshwater pond. Firstly, pond should be prepared properly before stocking of fish seed like aquatic weeds and predators should be eradicated with properly constructed the pond bottom and dike and then liming and fertilization should be done for making a better culture environment for fish. Good quality fish seed should be sock to the pond and feeding should be done properly. Periodic sampling for examining the proper growth and any disease infestation occurs should be done. Liming and fertilization should be done after stocking of fish seed if needed. Harvesting and marketing of fish should be done by considering some factors to get good profit.
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Zhang, Xianyu, Yingqi Zhang, Qian Zhang, Peiwu Liu, Rui Guo, Shengyi Jin, Jiawen Liu, Lei Chen, Zhen Ma, and Ying Liu. "Evaluation and Analysis of Water Quality of Marine Aquaculture Area." International Journal of Environmental Research and Public Health 17, no. 4 (February 24, 2020): 1446. http://dx.doi.org/10.3390/ijerph17041446.
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In the rapid development of marine aquaculture, the water quality of aquatic environments is regarded as a main limiting factor. Therefore, it is necessary to assess the water quality and environmental conditions in marine aquaculture areas and find out the main influencing factors regarding damage to the water quality environment. In the present research, pond aquaculture and cage aquaculture areas were sampled in May, August and November in 2018. Nine water quality indicators were detected, including pH, temperature, salinity, dissolved oxygen, molybdate-reactive phosphorus, chemical oxygen demand, chlorophyll a, inorganic nitrogen and antibiotic resistance genes (ARGs). Principal component analysis (PCA) was used to analyze the water quality conditions, spatial–temporal changes, and the driving factors in pond and cage aquaculture areas. The results showed that three main components were extracted from the pond aquaculture area, which explained 66.82% of the results, the most relevant factors are salinity, dissolved oxygen and ARGs. For the cage aquaculture area, three main components were extracted which can account for 72.99% of the results, the most relevant factors are chlorophyll a, salinity and dissolved oxygen. The comprehensive scores of the principal components indicated that the heaviest polluted months in pond and aquaculture areas were August and November, respectively. The water quality of the pond aquaculture area is mainly limited by the volume of the pond, while aquaculture activities and seasonality are the main factors for cage aquaculture. ARGs in cage culture areas showed more variety and frequency compared with pond culture areas, which indicated that terrestrial input might be one of the sources for ARGs occurrence. The results would be helpful for the relevant authorities to select water quality monitoring parameters in marine aquaculture areas.
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Prasad, Kumar, Marco Ottinger, Chunzhu Wei, and Patrick Leinenkugel. "Assessment of Coastal Aquaculture for India from Sentinel-1 SAR Time Series." Remote Sensing 11, no. 3 (February 11, 2019): 357. http://dx.doi.org/10.3390/rs11030357.
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Aquaculture is one of the fastest growing primary food production sectors in India and ranks second behind China. Due to its growing economic value and global demand, India’s aquaculture industry experienced exponential growth for more than one decade. In this study, we extract land-based aquaculture at the pond level for the entire coastal zone of India using large-volume time series Sentinel-1 synthetic-aperture radar (SAR) data at 10-m spatial resolution. Elevation and slope from Shuttle Radar Topographic Mission digital elevation model (SRTM DEM) data were used for masking inappropriate areas, whereas a coastline dataset was used to create a land/ocean mask. The pixel-wise temporal median was calculated from all available Sentinel-1 data to significantly reduce the amount of noise in the SAR data and to reduce confusions with temporary inundated rice fields. More than 3000 aquaculture pond vector samples were collected from high-resolution Google Earth imagery and used in an object-based image classification approach to exploit the characteristic shape information of aquaculture ponds. An open-source connected component segmentation algorithm was used for the extraction of the ponds based on the difference in backscatter intensity of inundated surfaces and shape metrics calculated from aquaculture samples as input parameters. This study, for the first time, provides spatial explicit information on aquaculture distribution at the pond level for the entire coastal zone of India. Quantitative spatial analyses were performed to identify the provincial dominance in aquaculture production, such as that revealed in Andhra Pradesh and Gujarat provinces. For accuracy assessment, 2000 random samples were generated based on a stratified random sampling method. The study demonstrates, with an overall accuracy of 0.89, the spatio-temporal transferability of the methodological framework and the high potential for a global-scale application.
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Lagutkina, Lina Yurievna, Evgeniia Kuzmina, Maria Georgievna Biryukova, and Elena Pershina. "Bioproductivity of ponds of VI fish breeding zone." Vestnik of Astrakhan State Technical University. Series: Fishing industry 2019, no. 4 (December 13, 2019): 87–94. http://dx.doi.org/10.24143/2073-5529-2019-4-87-94.
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Abstract. The paper highlights the prospects of cultivating heat-loving species, such as Australian crayfish and freshwater shrimps in the VI fish breeding zone. Australian crayfish and freshwater shrimps breeding is considered economically attractive for entrepreneurs, having a limited area for farming facilities. At the same time, pond ecosystems require the individual approach and close study in terms of the environmental conditions for the cultivated species upkeeping and the natural forage base that determine the pond biological productivity. Today, there are no clear recommendations on the summer keeping warmwater aquaculture species, in particular, Australian crayfish and freshwater shrimp in the Astrakhan region. To cultivate the new objects of warmwater aquaculture in 2017-2019 the small innovative enterprise Modern Sharapovskiy Fish Breeding Complex researched the production potential of ponds of various categories for receiving marketable products; there was studied the forage base, biomass of zooplankton and zoobenthos satisfying the nutritional needs of farmed objects. As a result of experimental work, it was found that in pond No.2, where freshwater shrimps were grown, there were registered 5 species of Cladocera and 1species of Rotifera, while in pond No.1 used for breeding Australian crayfish there were registered 4 species of Rotifera and only 1 species of Cladocera. Presumably, the observed species composition of the studied ponds is specified by the selectivity of the cultivated objects in zooplankton consumption. The possibility of increasing the bio-productivity of ponds by alternate growing aquaculture and agricultural products has been considered.
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Bao, Weijun, Songming Zhu, Shuirong Guo, Li Wang, Han Fang, Bin Ke, and Zhangying Ye. "Assessment of Water Quality and Fish Production in an Intensive Pond Aquaculture System." Transactions of the ASABE 61, no. 4 (2018): 1425–33. http://dx.doi.org/10.13031/trans.12799.
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Abstract. Pond aquaculture plays a major role in world aquaculture production, especially in China. To make pond aquaculture more precise, ecologically sound, and efficient, in this study, an intensive pond aquaculture system (IPAS) was designed and built to produce freshwater fish that are commonly reared in China. Aquatic plants and filter-feeding, omnivorous fish were used to rehabilitate the aquaculture water quality, and the particle size distribution (PSD) model of suspended solids in the pond raceways was investigated. The results showed that the water quality in the purification pond was improved compared to that in the sedimentation basins, and it was close to the water quality in the raceways, which were within the acceptable range. The number distribution of suspended solids can be described by the power law model (R2 = 0.901 ± 0.032), which can provide guidance for solids removal using different methods. Moreover, during one production cycle, economic benefits of the IPAS were also evaluated; the return on investment (ROI) of 35.69% and benefit cost ratio (BCR) of 1.36 indicated that this kind of aquaculture mode has achieved a better profit. There are many fish species in China, so developing an IPAS with a wide application range requires further study in the future. Keywords: Airlift push-water aerator, Aquatic plant, Drum filter, Intensive pond aquaculture system, Particle size distribution, Purification pond.
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Aihonsu, J. O. Y., O. F. Oreagba, A. O. Idowu, and A. M. Shittu. "Economic analysis of aquaculture practices in some Local Government areas of Ogun State." Nigerian Journal of Animal Production 34, no. 2 (January 9, 2021): 277–88. http://dx.doi.org/10.51791/njap.v34i2.1204.
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The primary aim of the study was to ascertain the profitaility and assess resource use efficiency as well as compare same between the two sysytems of aquaculture (Concrete pond and Dug-out pond Systems) in Ijebu-North and Ijebu Norh-East Local Government Areas of Ogun State. To accomplish this objective, the 65 fish farmers (30 Dug-out pond and 35 concrete pond) whose fish had reached market size were interviewed in the study areas during 2001/2002 production season. Sets of structured questionnaire, personally administered were used to collect the required data. The mean sizes of the concrete ponds and Dug-out ponds were employed in the analysis of the data. The mean sizes of the concrete ponds and Dug-out ponds were 64.57 M2 and 2392.43 M2 respectively.
The budgetary analysis of the two systems showed that fish production was profitable in the area. The concrete pond (CPS) system was however found to be more profitable than the dug-out pond system (DPS). The result of the regression analysis showed that the number of fingerlings stocked per square metre, man days of human labour used , months of production season and quatity of fertilizer and lime used had much more significant influence on yield (harvest) from the CPS than from the DPS. The comparison of the technical efficiency of inputs in both systems showed that the inputs were more efficiently utilized in the CPS rather than in the DPS. The result of the Chow test showed that the resource used in the CPS differed significantly at 5 percent level, from that of DPS.
Following their findings, it was recommended that fish farmers in the study area should increase their stocking rate and reduce the amount of hired labour as well as use appropriate good quality feed in order to improve their productivity levels.
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Li, Zhifei, Guangjun Wang, Ermeng Yu, Kai Zhang, Deguang Yu, Wangbao Gong, and Jun Xie. "Artificial substrata increase pond farming density of grass carp (Ctenopharyngodon idella) by increasing the bacteria that participate in nitrogen and phosphorus cycles in pond water." PeerJ 7 (October 14, 2019): e7906. http://dx.doi.org/10.7717/peerj.7906.
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Aquaculture has become a primary method to produce various aquatic products, and intensive aquaculture technologies have become commercially important. To improve the efficiency of intensive aquaculture per unit area without reducing the growth rate of cultured fish, the present study explored the potential of artificial substrata in ponds. Our results showed that the concentrations of total nitrogen (TN) and total phosphorous (TP) in the ponds with different stocking densities of grass carp were lower than those in the control group in most cases. Further, the feed conversion rate of grass carp was significantly reduced by introducing these artificial substrata, and the culture density could be significantly increased without reducing the growth rates of these fish. Artificial substrata also significantly enriched specific bacteria and changed the structure of the microbiota in pond water. The relative abundance of Proteobacteria was significantly increased, and bacteria closely related to N and P cycles, such as Hyphomicrobium, Chitinimonas, Legionella, Shewanella, Roseiflexus, and Planktothrix were significantly enhanced. These results showed that the artificial substratum could increase TN and TP removal in aquaculture pond water by enriching N and P cycle-related bacteria, thus significantly increasing the specific growth rate of grass carp and significantly reducing their feed conversion rate. Finally, the stocking density of grass carp and the yield per unit area of pond could be increased without reducing the growth rate.
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Dong, Zhijun, André C. Morandini, Agustin Schiariti, Lei Wang, and Tingting Sun. "First record ofPhyllorhizasp. (Cnidaria: Scyphozoa) in a Chinese coastal aquaculture pond." PeerJ 7 (January 9, 2019): e6191. http://dx.doi.org/10.7717/peerj.6191.
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BackgroundIt has been suggested that aquaculture ponds on the Chinese coast could act as breeding grounds for scyphozoans. Here, we present the first record of the scyphomedusaPhyllorhizasp. in an aquaculture pond on the coast of the southern Yellow Sea, based on a combination of morphological characteristics and mitochondrial 16S DNA sequence data.MethodsA field survey was performed on June 29, 2017 in a pond used for culturing the shrimpPenaeus japonicus, located in the southern Yellow Sea, China. Jellyfish specimens were collected for morphological and genetic analysis. The morphological characters of the jellyfish specimens were compared to taxonomic literature. Additionally, phylogenetic analysis of the mitochondrial 16S fragments of these specimens were also conducted.ResultsThese specimens had the following morphological characters: hemispherical umbrella without scapulets; J-shaped oral arms; a single larger terminal club on each arm; bluish colored with a slightly expanded white tip; and mouthlets present only in the lower half to one-third of each arm. These morphological features of the medusae indicated that the specimens found in the shrimp culture ponds belong to the genusPhyllorhizaAgassiz, 1862, but did not match with the description of any of the known species of the genusPhyllorhiza.Phylogenetic analyses of the mtDNA 16S regions revealed that these specimens, together withPhyllorhizasp. from Malaysian coastal waters, belong to a sister group ofPhyllorhiza punctata. Juveniles and ephyrae ofPhyllorhizasp. were observed in the aquaculture pond. The mean density ofPhyllorhizasp. medusa in the surface water within the pond was estimated to be 0.05 individuals/m2.DiscussionBased on our observations of the gross morphology and molecular data, we state that the specimens collected in the aquaculture pond can be identified asPhyllorhizasp. This is the first record ofPhyllorhizasp. in Chinese seas. Large scale dispersal through ballast water or the expansion of jellyfish aquarium exhibitions are possible pathways of invasion, but this needs to be confirmed in further studies.
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Petrea, Ștefan-Mihai, Alina Mogodan, Isabelle Metaxa, Cătălin Platon, Mioara Costache, and Ira-Adeline Simionov. "THE TECHNOLOGICAL WATER NITROGEN COMPOUNDS DYNAMICS IN THE EXPERIMENTAL PONDS, INLET AND OUTLET CHANNELS." Present Environment and Sustainable Development 13, no. 2 (October 15, 2019): 259–77. http://dx.doi.org/10.15551/pesd2019132020.
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This study aims to identify proper solutions that can improve the sustainability of cyprinids pond aquaculture in terms of nitrogen releases to the environment. Therefore, two experimental variants, based on polyculture, respectively integrated multi-trophic aquaculture (IMTA) concept were tested, as follows: PCP – polyculture of common carp (CC) + grass carp (GC) + bighead carp (BC) + silver carp (SC); CP-PP – net divided pond with CC monoculture in CP part and CC+GC+BC+SC polyculture in PP part. In order to determine the nitrogen accumulation at the pond level, samples of water, sediments, fish meat and reed were analyzed. The results indicate that the highest nitrogen compounds concentrations in pond water were registered at CP part of CP-PP pond. However, the nitrogen concentration in pond effluents was significant higher in case of CP-PP pond, compared with PCP pond. The nitrogen compounds concentration of sediments registered the highest values in the ponds outlet area. Also, CP-PP pond recorded higher nitrogen concentration in sediments, compared with PCP pond. The CC registered the highest nitrogen compounds concentration in case of PP pond area, followed by CP pond area and PCP pond. Not significant correlation was found between reed and pond water/ fish meat/ sediments in terms of nitrogen compounds concentration. It can be concluded that the CP-PP pond feeding management, together with the tested technical solution (pond dividing) generated better water conditioning performances.
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Akter, Taslima, Shampa Rani Ghosh, Sitesh Chandra Sarker, Md Mokhlesur Rahman, and KM Eadun Nabi. "Quantitative assessment of ionic status of pond water for irrigation and aquaculture usage in the selected sites of Mymensingh areas, Bangladesh." Research in Agriculture Livestock and Fisheries 6, no. 2 (September 9, 2019): 301–13. http://dx.doi.org/10.3329/ralf.v6i2.43053.
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Ponds are considered to be self-contained, land lock ecosystem which is often teeming with rich vegetation and diverse organismal life. The pond water contains different organic and inorganic components. The experiment was carried out in laboratory, Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh through collection of pond water from Gouripur and Muktagacha under Mymensingh division for assessment of major ionic status and suitability parameters for irrigation and aquaculture usage in quantitative way. Around 30 samples were collected from different location. On the basis of HCO3 ion, all water samples except 3 samples were not suitable for irrigation because this anion exceeded the acceptable limit (1.5 meL-1). On the other hand, HCO3 ion was not treated as problematic in all samples except 2 samples for aquaculture usages. The concentrations of Ca, Mg, Na, K, PO4 and SO4 were far below the recommended limit. Considering aquaculture usage, Cl ion was considered as hazardous in all the pond water samples because this anion was above the legal limit (<0.003mgL-1). pH value of pond ranged from 7.02 to 7.87 indicating alkaline in nature and were not problematic for irrigation and aquaculture usage. Among the major ionic constituents, the remarkable significant correlations existed between Ca vs Mg, Ca vs K, Mg vs SO4, K vs Na, Na vs SO4.
Res. Agric., Livest. Fish.6(2): 301-313, August 2019
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Bespalyy, Degtyaryk, Slobodnitskaja, Poloz, and Grebneva. "NEW ASPECTS OF STRUGGLE AGAINST INVASIONS OF MAJOR OBJECTS OF BELARUS’ AQUACULTURE." THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL, no. 20 (May 14, 2019): 102–7. http://dx.doi.org/10.31016/978-5-9902340-8-6.2019.20.102-107.
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The article provides information on the most common invasive diseases of fish, which are the main objects of cultivation in aquaculture in Belarus, and information on new products developed by the employees of the RUE “Institute of Fisheries” RUE “Scientific and Practical Center of the National Academy of Sciences of Belarus for live stock breeding” to combat these invasions.Aquaculture of the Republic of Belarus is characterized by a global trend – an increase in fish production due to the cultivation of various types of fish in artificial conditions. In spite of the fact that today industrial-type enterprises are actively developing in Belarus (production is carried out under conditions of RAS or PSO), the main share of production, about 93%, falls on pond-type farms.Successful fulfillment of tasks to increase fish production, with constant pond fund areas, requires new solutions in such areas as working with new species of fish, conducting breeding work, developing balanced feed, improving fish farming technologies, studying microbiology and hydrobiology of ponds and so on.An important component of modern pond fish culture, which allows to significantly increase the yield and quality of fish products, is the ichthyopathological part. Due to the fact that production ponds have a close relationship with the biocenosis of natural water bodies, monitoring of invasive diseases in fish in both production ponds and the water source (the head pond, water sources flowing into it and nearby natural water bodies) comes to the fore. Monitoring of fish invasions in turn forms the need to develop ecological, highly efficient, and economically low-cost methods for the protection of pond fish.
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Zhang, Zhimin, Qinghui Deng, Lingling Wan, Xiuyun Cao, Yiyong Zhou, and Chunlei Song. "Bacterial Communities and Enzymatic Activities in Sediments of Long-Term Fish and Crab Aquaculture Ponds." Microorganisms 9, no. 3 (February 26, 2021): 501. http://dx.doi.org/10.3390/microorganisms9030501.
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Aquaculture is among the most important and fastest growing agriculture sectors worldwide; however, it generates environmental impacts by introducing nutrient accumulations in ponds, which are possibly different and further result in complex biological processes in the sediments based on diverse farming practices. In this study, we investigated the effects of long-term farming practices of representative aquatic animals dominated by grass carp (GC, Ctenopharyngodon idella) or Chinese mitten crab (CMC, Eriocheir sinensis) on the bacterial community and enzyme activity of sediments from more than 15 years of aquaculture ponds, and the differences associated with sediment properties were explored in the two farming practices. Compared to CMC ponds, GC ponds had lower contents of TC, TN, and TP in sediments, and similar trends for sediment pH and moisture content. Sediment bacterial communities were significantly different between GC and CMC ponds, with higher bacterial richness and diversity in GC ponds. The bacterial communities among the pond sediments were closely associated with sediment pH, TC, and TN. Additionally, the results showed profoundly lower activities of β-1,4-glucosidase, leucine aminopeptidase, and phosphatase in the sediments of GC ponds than CMC ponds. Pearson’s correlation analysis further revealed strong positive correlations between the hydrolytic enzyme activities and nutrient concentrations among the aquaculture ponds, indicating microbial enzyme regulation response to sediment nutrient dynamics. Our study herein reveals that farming practices of fish and crab differently affect bacterial communities and enzymatic activities in pond sediments, suggesting nutrient-driven sediment biological processes in aquaculture ponds for different farming practices.
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Yu, Tao, Fei Zhong, Dong Xu, Qiao Hong Zhou, Wei Liang, Feng He, and Zhen Bin Wu. "Water Quality and Growth Simulation of Channel Catfish, Ictalurus Punctatus, in a Recirculating Aquaculture System Combined with Subsurface Flow Wetland." Advanced Materials Research 343-344 (September 2011): 1109–16. http://dx.doi.org/10.4028/www.scientific.net/amr.343-344.1109.
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Purifying efficiency and culture performance in a recirculating aquaculture system (RAS) combined with subsurface flow wetland (SFW) were investigated in this paper. The results showed that the wetland effectively removed total suspended solids (78.6%), chemical oxygen demand (49.2%), 5-day biochemical oxygen demand (70.4%), total ammonia (53.7%) and nitrite (64.7%) from the aquaculture effluents at a hydraulic loading rate of 344 mm/d. The channel catfish (Ictalurus punctatus) with initial length of 18.97±2.92 cm were reared for 223 days in three recycling ponds at different stocking densities (0.055, 0.109, and 0.164 kg/m3) and a control pond at stocking density 0.055 kg/m3. Fish were fed to satiation twice daily with a commercial diet and the amount fed was measured to determine feed efficiency (FE). In the recycling ponds, fish growth appeared to be negatively correlated with stocking density, in which total weight gain of fish ranged from 374.9% to 886.7%. Fish in the control pond had low survival rate (61.1%) and total weight gain (465.2%), comparing with the recycling pond which had same stocking density (0.055 kg/m3). Feed efficiency (0.34) of the control pond was also significantly lower than that of the 0.055 kg/m3 treatment (0.96). A logistic model of was employed to simulate the growth of channel catfish. The estimated parameters and predicted results showed that the growth rate of channel catfish reared in recycling pond is significantly higher than that in static pond.
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Mischke, Charles C. "Winter Pond Fertilization Can Increase Phytoplankton Density in Aquaculture Ponds." North American Journal of Aquaculture 76, no. 1 (January 2, 2014): 67–71. http://dx.doi.org/10.1080/15222055.2013.855285.
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Jaeger, Christophe, and Joël Aubin. "Ecological intensification in multi-trophic aquaculture ponds: an experimental approach." Aquatic Living Resources 31 (2018): 36. http://dx.doi.org/10.1051/alr/2018021.
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As aquaculture production is increasing considerably, it needs to become more environment-friendly. Based on a participatory process, an ecologically intensive pond system was designed to test three hypotheses: a combination of intensive and extensive areas provides more ecosystem services than an intensive or extensive area alone; coupling a planted lagoon with an intensive pond decreases the latter's environmental impacts and maintains or increases its fish productivity; and using formulated feed in polyculture increases growth of all fish species. To test these hypotheses, we designed a specific integrated multi-trophic aquaculture system composed of a polyculture of common carp (Cyprinus carpio), roach (Rutilus rutilus) and tench (Tinca tinca) and a lagoon planted with macrophytes to filter the water. This pond system was compared with “extensive” (unfed) and “semi-intensive” fishpond systems without a planted lagoon. We measured fish growth performances, water quality, chlorophyll concentrations and water and sediment nutrient contents. We also calculated the mass balance of nutrients. Concentrations of total nitrogen and phosphorus increased in sediments, indicating that nutrients were stored in the ponds, especially in planted lagoon; the planted lagoon decreased phytoplankton development, and limited blooms, but it slightly decreased fish growth performances compared to those in semi-intensive fishponds. The formulated feed supplied clearly increased fish growth performances and the survival rate, and seemed also to increase the use of available nutrients in ponds, which improved the production of overall fish biomass. In conclusion, the planted lagoon provides ecosystem services on nutrients cycling and habitat for natural biodiversity. Improving knowledge about nutrient cycles from formulated feed within the pond food web would be useful to increase the amounts of nutrients converted into fish biomass.
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Tan, Min, Kun Wang, Zhou Xu, Hanghe Li, and Junfeng Qu. "Study on Heavy Metal Contamination in High Water Table Coal Mining Subsidence Ponds That Use Different Resource Reutilization Methods." Water 12, no. 12 (November 29, 2020): 3348. http://dx.doi.org/10.3390/w12123348.
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Heavy metals accumulate in high water table coal mining subsidence ponds, resulting in heavy metal enrichment and destruction of the ecological environment. In this study, subsidence ponds with different resource reutilization methods were used as study subjects, and non-remediated subsidence ponds were collectively used as the control region to analyze the heavy metal distributions in water bodies, sediment, and vegetation. The results revealed the arsenic content in the water bodies slightly exceeded Class III of China’s Environmental Quality Standards for Surface Water. The lead content in water inlet vegetation of the control region and the Anguo wetland severely exceeded limits. Pearson’s correlation, PCA, and HCA analysis results indicated that the heavy metals at the study site could be divided into two categories: Category 1 is the most prevalent in aquaculture pond B and mainly originate from aquaculture. Category 2 predominates in control region D and mainly originates from atmospheric deposition, coal mining, and leaching. In general, the degree of heavy metal contamination in the Anguo wetland, aquaculture pond, and fishery–solar hybrid project regions is lower than that in the control region. Therefore, these models should be considered during resource reutilization of subsidence ponds based on the actual conditions.
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Zeng, Zhe, Di Wang, Wenxia Tan, Gongliang Yu, Jiacheng You, Botao Lv, and Zhongheng Wu. "RCSANet: A Full Convolutional Network for Extracting Inland Aquaculture Ponds from High-Spatial-Resolution Images." Remote Sensing 13, no. 1 (December 30, 2020): 92. http://dx.doi.org/10.3390/rs13010092.
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Numerous aquaculture ponds are intensively distributed around inland natural lakes and mixed with cropland, especially in areas with high population density in Asia. Information about the distribution of aquaculture ponds is essential for monitoring the impact of human activities on inland lakes. Accurate and efficient mapping of inland aquaculture ponds using high-spatial-resolution remote-sensing images is a challenging task because aquaculture ponds are mingled with other land cover types. Considering that aquaculture ponds have intertwining regular embankments and that these salient features are prominent at different scales, a Row-wise and Column-wise Self-Attention (RCSA) mechanism that adaptively exploits the identical directional dependency among pixels is proposed. Then a fully convolutional network (FCN) combined with the RCSA mechanism (RCSANet) is proposed for large-scale extraction of aquaculture ponds from high-spatial-resolution remote-sensing imagery. In addition, a fusion strategy is implemented using a water index and the RCSANet prediction to further improve extraction quality. Experiments on high-spatial-resolution images using pansharpened multispectral and 2 m panchromatic images show that the proposed methods gain at least 2–4% overall accuracy over other state-of-the-art methods regardless of regions and achieve an overall accuracy of 85% at Lake Hong region and 83% at Lake Liangzi region in aquaculture pond extraction.
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Subedi, Bidika, and Abhimanyu Shrestha. "Overview of pond aquaculture in Nepal." International Journal of Environment, Agriculture and Biotechnology 5, no. 5 (2020): 1215–19. http://dx.doi.org/10.22161/ijeab.55.4.
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Brown, R. W. "Bottom soils, sediment, and pond aquaculture." Fisheries Research 32, no. 2 (November 1997): 197. http://dx.doi.org/10.1016/s0165-7836(97)90012-6.
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Hepher, B. "Principles and practices of pond aquaculture." Aquaculture 61, no. 3-4 (April 1987): 323–24. http://dx.doi.org/10.1016/0044-8486(87)90161-x.
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Wickins, J. F. "Bottom soils, sediment and pond aquaculture." Aquaculture 143, no. 1 (July 1996): 109–10. http://dx.doi.org/10.1016/0044-8486(96)83749-5.
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Val Klump, J. "Bottom soils, sediment, and pond aquaculture." Aquatic Botany 54, no. 4 (August 1996): 349–50. http://dx.doi.org/10.1016/0304-3770(96)01057-1.
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Zannat, F., MA Ali, and MA Sattar. "Investigation of Some Water Quality Parameters of Pond Water under Mymensingh Municipality." Journal of Environmental Science and Natural Resources 8, no. 1 (August 24, 2015): 85–89. http://dx.doi.org/10.3329/jesnr.v8i1.24677.
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A study was conducted to evaluate the water quality parameters of pond water at Mymensingh Urban region. The water samples were collected from 30 ponds located at Mymensingh Urban Region during August to October 2010. The chemical analyses of water samples included pH, EC, Na, K, Ca, S, Mn and As were done by standard methods. The chemical properties in pond water were found pH 6.68 to 7.14, EC 227 to 700 ?Scm-1, Na 15.57 to 36.00 ppm, K 3.83 to 16.16 ppm, Ca 2.01 to 7.29 ppm, S 1.61 to 4.67 ppm, Mn 0.33 to 0.684 ppm and As 0.0011 to 0.0059 ppm. The pH values of water samples revealed that water samples were acidic to slightly alkaline in nature. The EC value revealed that water samples were medium salinity except one sample and also good for irrigation. According to drinking water standard Mn toxicity was detected in pond water. Considering Na, Ca and S ions pond water was safe for irrigation and aquaculture. In case of K ion, all the samples were suitable for irrigation but unsuitable for aquaculture.J. Environ. Sci. & Natural Resources, 8(1): 85-89 2015
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Tian, Min, Jian Qiang Zhu, and Gu Li. "Ex Situ Purification of Fishpond Water by Lotus Pond." Advanced Materials Research 955-959 (June 2014): 3910–14. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3910.
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In the plain-lake area of south China, aquaculture and plantation of aquatic commercial crop are very common. In order to realize water quality improvement for aquaculture pond and reuse of the nutrients, it is essential to establish an integrated system that constitute aquaculture pond and plant purifying pond which are linked by necessary farmland works. In the study, the connection between fishpond and lotus pond was established mainly by water pipe and water suction pump. When lotus pond is used for purifying fishpond water, using water pump draw water from fishpond into lotus pond, then experiments of water retention and subsurface flow on the lotus pond were done in the several growth stages of lotus root. During the experiments taking water samplings at the inlet and outlet which were installed at lotus pond to determine the relevant water quality indicators, analysis showed that: TP, TN, NH4+-N, NO3――N, NO2――N and CODMn contained in aquaculture water may effectively remove as the water stay at lotus pond for a certain time, the removal rate of the above-mentioned substances increases with the increase of retention period of the aquaculture water standing in lotus pond; there are some regularity when fishpond water is purified by surface flow in lotus pond, the removal rate for TP and TN in dormant stage of lotus root is more than that in adult-plant stage and the effect in adult-plant stage is more than that in rooting stage, and for NH4+-N, NO3――N, NO2――N and CODMn the removal rate in adult-plant stage is more than that in dormant stage and the effect in dormant stage is more than that in rooting stage; the more of the TP, TN, NO3――N and NH4+-N is removed with the increase of the running time when fishpond water processed by surface flow in lotus pond, the removal rate of them arrives to 13.89%, 11.43%, 11.02% and 5.73% separately after the system running for 6 hours; compared with the contrast fishpond, the water quality of the fishpond combining with lotus pond is good obviously, where water quality indicators such as TP, NO3--N, TURB(turbidity) and SD(water transparency) arrive to significant improvement, meanwhile TN, NH4+-N and CODMn get a marked improvement. On average, such a conclusion can be drawn that aquaculture in fishpond and plantation in lotus pond may be integrate, fishpond water may get an improvement by ex-situ purification of lotus pond, and meanwhile the combination makes it possible that the nutrients contained in fishpond water are recycled.
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Hsu, Wei-Chih, Pao-Yuan Chao, Chia-Sui Wang, Jen-Chieh Hsieh, and Wesley Huang. "Application of Regression Analysis to Achieve a Smart Monitoring System for Aquaculture." Information 11, no. 8 (August 7, 2020): 387. http://dx.doi.org/10.3390/info11080387.
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The consumption awareness of people in recent years has increased, with food safety becoming more and more important. While non-toxic products can be achieved by avoiding using too much antibiotics to control growth factors in a water environment, the measurement tools for dissolved oxygen on the market are very expensive and a great economic burden to fishermen. Thus, the purpose of this study is to design more economical measurement modules and algorithms for monitoring ponds. The research collected pond data through Oxidation-Reduction Potential (ORP), pH and temperature sensors, used regression analysis to infer Dissolved Oxygen (DO) by ORP and pH, and employed a real-time pond monitoring data map to figure out pond conditions. Compared with traditional equipment, findings show our approach reduces costs by about 20%, and increases production capacity and output value.
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The Truyen, Le, and Le Thanh Long. "The waste remover in aquaculture ponds." Science & Technology Development Journal - Engineering and Technology 3, SI1 (April 12, 2020): First. http://dx.doi.org/10.32508/stdjet.v3isi1.729.
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Over the past decade, Vietnam's shrimp industry has made great progress and brings Vietnam into the rank of the world's largest shrimp exporters. The development trend of the shrimp industry in the world as well as in Vietnam today is in the direction of intensive and super-intensive farming, technology innovation to enhance productivity and quality. However, the shrimp farming industry in Vietnam is facing many difficulties; one of them is the problem of environmental pollution, raising the negative impact on the economic effectiveness of farming. Causes are mainly due to excess food and untreated shrimp waste accumulated on the pond bottom surface and disintegrated to reduce dissolved oxygen concentration, release toxic gases such as NH3, H2S and create a favorable environment for harmful microorganisms to develop. Therefore, it is necessary to have a countermeasure to thoroughly remove waste from the farming environment. This paper introduces a general design of a waste remover, which is needed for shrimp farming ponds to remove waste and solve the mentioned problem. This equipment moves on the bottom surface of the pond and can be autonomous or manually remote controlled. During the working process, the equipment brushes waste on the bottom surface of the pond and suck it into the filter bag. The waste remover includes such following main units: traveling unit, brushing unit, sucking unit, frame unit, transmission, and control systems. The equipment uses the principle of axial pumping, sucks waste along the water stream by reducing the pressure inside the equipment, and transfers waste into filter bags. This general design basically meets the requirement of waste removal and can be fundamental for designing the detailed units, manufacturing, and experiment implementation of equipment in the future.
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Marsuki, Mustainah, Andi Tamsil, and Ihsan H.Cotte. "ANALISIS ASPEK BIOFISIK DAN KIMIA PERAIRAN UNTUK PENGEMBANGAN BUDIDAYA TAMBAK DI WILAYAH PESISIR KECAMATAN PEDONGGA KABUPATEN PASANGKAYU SULAWESI BARAT." JOURNAL OF INDONESIAN TROPICAL FISHERIES (JOINT-FISH) : Jurnal Akuakultur, Teknologi Dan Manajemen Perikanan Tangkap, Ilmu Kelautan 2, no. 1 (June 24, 2019): 56–67. http://dx.doi.org/10.33096/joint-fish.v2i1.31.
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In general, land use in Pasangkayu Regency is dominated by forests, both protected forestsand production forests, plantations especially oil palm plantations, mixed gardens, rice fields bothirrigated rice fields and rainfed rice fields, as well as shrubs, weeds, mangrove forests andwetlands, beaches, settlements, government buildings and other infrastructure facilities. This studyaims to (1) Know the biophysical and chemical aspects of the waters, (2) Analyze the suitability ofaquaculture land in supporting the development of aquaculture, and (3) Assess strategies fordeveloping aquaculture ponds. The results showed that (1) the biophysical and chemical aspectsof waters in coastal and marine areas, where coastal ecosystems, physical and chemical aspects ofthe waters strongly supported aquaculture activities, (2) the results of suitability of aquacultureland in the development of pond culture in Batu Oge Village Very suitable land with a land area of1,72 Ha, Adequate According to 61,07 Ha, and Appropriate 122,34 Ha. Malei village landsuitability is quite suitable 16,47 ha, and according to 334,18 ha. Mertasari Village landsuitability In accordance with the land area of 26,19 ha, and Village of land suitability inaccordance with 2,27 ha of land area, and (3) Strategy for the development of pond culture inPedongga District, Pasangkayu Regency, includes 3 strategies: technical meeting meetingbetween the local Fisheries Service with pond farmers to teach CBUB and CBIB, optimize the useof farm land, and determine the boundaries of the area for the development of ponds and oil palm.
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Ye, Hao, Jian Qiang Zhu, and Gu Li. "Advances in Water Purification for Pond Freshwater Aquaculture." Advanced Materials Research 955-959 (June 2014): 3928–32. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3928.
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Pond freshwater aquaculture, an important production mode, provides aquatic product for people, especially in south of China. Meanwhile, with the development of aquaculture technology of higher density and intensification, the environmental problem and pollution in freshwater pond have become even more acute. In this case, the water purification technology plays an important role in maintenance of the healthy aquaculture and there are a variety of water purification technologies in production practice. This paper is divided into four parts: a) the analysis of the causes of water quality deterioration in freshwater pond, b) the summary of water purification technologies in present, c) the brief analysis of the advantages and disadvantages of the in-situ remediation and ex-situ remediation, d) the prospection of pond water purification technologies in the future.
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GrØnning, Josephine, Nam X. Doan, Nguyet T. Dinh, Khuong V. Dinh, and Torkel Gissel Nielsen. "Ecology of Pseudodiaptomus annandalei in tropical aquaculture ponds with emphasis on the limitation of production." Journal of Plankton Research 41, no. 5 (September 2019): 741–58. http://dx.doi.org/10.1093/plankt/fbz053.
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ABSTRACT The calanoid copepod Pseudodiaptomus annandalei is used as live feed in aquaculture because of its nutritional value and the ability to cope with environmental fluctuations in outdoor ponds. However, little knowledge exists on its ecology. Here we investigated the ecology of P. annandalei in an aquaculture pond in Vietnam. Temperature, salinity, chlorophyll a and biomass of protozoans and copepods were monitored every other day for 1 month. Experiments on protozoan growth and grazing by P. annandalei were also conducted. Copepod fecal pellet production and temperature-dependent egg hatching rates were likewise quantified. Despite very high phytoplankton biomass, biomass of P. annandalei was surprisingly low. Copepod production was estimated from three independent methods: clearance, weight-specific egg production rate (SEP) and specific fecal pellet production rate. SEP proved to be accurate to predict the in situ population growth in the pond. A simple model for production of P. annandalei based on SEP was developed. Our study extends our knowledge of how environmental conditions in the pond may affect the population dynamics and production of copepods. The results have important implications for pond managements ensuring stable copepod production and harvest.
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KOONSE, BRETT, WILLIAM BURKHARDT, STUART CHIRTEL, and GEORGE P. HOSKIN. "Salmonella and the Sanitary Quality of Aquacultured Shrimp." Journal of Food Protection 68, no. 12 (December 1, 2005): 2527–32. http://dx.doi.org/10.4315/0362-028x-68.12.2527.
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In this study, we examined the prevalence of Salmonella and coliform bacteria on shrimp aquaculture farms to develop guidelines or preventative measures for reducing Salmonella and fecal contamination on products harvested from these farms. The U.S. Food and Drug Administration, in conjunction with foreign government regulatory agencies, the aquaculture industry, and academia affiliates, analyzed 1,234 samples from 103 shrimp aquaculture farms representing six countries between July 2001 and June 2003 for fecal coliforms, Escherichia coli, and Salmonella. A significant relationship was found (P = 0.0342) between the log number of fecal bacteria and the probability that any given sample would contain Salmonella. The likelihood of any given sample containing Salmonella was increased by 1.2 times with each 10-fold increase in either fecal coliform or E. coli concentration. The statistical relationship between Salmonella concentration and that of both fecal coliforms and E. coli was highest in grow-out pond water (P = 0.0042 for fecal coliforms and P = 0.0021 for E. coli). The likelihood of finding Salmonella in grow-out pond water increased 2.7 times with each log unit increase in fecal coliform concentration and 3.0 times with each log unit increase in E. coli concentration. Salmonella is not part of the natural flora of the shrimp culture environment nor is it inherently present in shrimp grow-out ponds. The occurrence of Salmonella bacteria in shrimp from aquaculture operations is related to the concentration of fecal bacteria in the source and grow-out pond water.
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Bastos, R. K. X., E. N. Rios, F. L. Dornelas, F. A. L. Assunção, and L. E. Nascimento. "Ammonia and phosphorus removal in polishing ponds: a case study in Southeast Brazil." Water Science and Technology 55, no. 11 (June 1, 2007): 65–71. http://dx.doi.org/10.2166/wst.2007.344.
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Ammonia and phosphorus removal were evaluated over four years monitoring of an experimental wastewater treatment plant in Brazil: initially a UASB reactor (real scale) + three shallow polishing ponds (pilot scale), afterwards a UASB + submerged aerated biofilter (BF) (real scale) + the same pond series. Shallow ponds (h < 0.90m) provided considerable ammonia removal, but phosphorus removal was somewhat poorer. An equation was derived for the estimation of ammonia pond effluent, based on the same assumptions of the well known Pano and Middlebrooks model. According to the experimental data, an effluent suitable for aquaculture should be achieved with retention time of 25 days.
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Madenjian, Charles M., Gary L. Rogers, and Arlo W. Fast. "Predicting Nighttime Dissolved Oxygen Loss in Aquaculture Ponds." Canadian Journal of Fisheries and Aquatic Sciences 45, no. 10 (October 1, 1988): 1842–47. http://dx.doi.org/10.1139/f88-216.
Full textAbstract:
The Whole Pond Respiration–Diffusion (WPRD) model was evaluated for brackish-water ponds. The WPRD model accurately describes the nighttime decline of dissolved oxygen concentration (DO) in both freshwater and brackish-water ponds. DO, water temperature, and wind speed were monitored overnight in marine shrimp (Penaeus vannamei and P. monodon) ponds at Amorient Aquafarm Inc. (Kahuku, Oahu) and at the Mariculture Research and Training Center (Hakipuu, Oahu) during July through December 1986. The model performed well for calm nights (wind speed between 1 and 2 m∙s−1) and for relatively windy nights (wind speed greater than 7 m∙s−1). Diffusion of oxygen into the ponds, particularly at Amorient, was important in determining the nighttime DO decline. The model has yielded accurate predictions of dawn DO for a variety of aquaculture ponds and meteorological conditions.
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Hrytsyniak, I., V. Guschin, and O. Polishchuk. "Producing and rearing largemouth bass (Micropterus salmoides (Lacеpеde, 1802)) fry in conditions of warm-water pond fish farms (a review)." Ribogospodarsʹka nauka Ukraïni., no. 1(55) (March 31, 2021): 22–38. http://dx.doi.org/10.15407/fsu2021.01.022.
Full textAbstract:
Purpose. Largemouth bass (Micropterus salmoides), a fish species native to freshwaters of North America, is a promising object of aquaculture all over the world. This is evidenced by the fact that this species is currently actively cultivated in aquaculture of more than 50 countries worldwide, on all continents, with the exception of Antarctica and Australia, both for recreational fishing and as a table fish. If we consider the history of breeding and cultivation of the largemouth bass, we can note a tendency to a continuous expansion of the stages of cultivation and transition from polyculture to monoculture. For example, in the first half of the last century, fish farms in the United States raised mainly juveniles of largemouth bass for stocking to natural water bodies, but currently most farms use the full production cycle from fry to marketable fish. In addition, earlier largemouth bass was used in many countries mainly as an additional object of aquaculture (biomeliorator) to increase the production of common carp, but now, thanks to the development of recreational fishing, it is increasingly becoming the main object of aquaculture, which is facilitated by the intensification of cultivation methods. Nowadays, there are many methods of growing largemouth bass, from the simplest, extensive, when fish are raised on natural food supply, to most intensive using flow-through aquaculture systems and off-season spawning. On the territory of Ukraine, it may be effective to use pond aquaculture of largemouth bass, which begins from the production of larvae and fry at fish farms. This stage of fish farming will be discussed in this article. Findings. This article contains brief information on method of natural spawning of largemouth bass, filling ponds with water, selection of broodstock and norms for their stocking to spawning ponds, spawning behavior of fish, peculiarities of caring for larvae and fry, sorting juveniles, as well as minimizing injuries during manipulations with fish. Practical value. Information from this review can be used for development of a new method for production of largemouth bass larvae and fry at warm-water pond farms in Ukraine, taking into account climatic conditions and local specificities of aquaculture. Key words: Largemouth bass, Micropterus salmoides, recreation fishing, sport fishing, pond fish farm, aquaculture, biomeliorator, larvae, fry, polyculture, monoculture, intensification, perspective species.
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Samah, Rozana, and Roslina Kamaruddin. "The Influence of Socio-Demographic Factors in Adopting Good Aquaculture Practices: Case of Aquaculture Farmers in Malaysia." Journal of Sustainable Development 8, no. 9 (November 23, 2015): 97. http://dx.doi.org/10.5539/jsd.v8n9p97.
Full textAbstract:
<p>This study examined the influence of socio-demographic characteristics on the level of Good Aquaculture Practices (GAqP) among aquaculture farmer in the Northern part of Peninsular Malaysia. Primary data was obtained from survey that was conducted on 121 brackishwater and freshwater pond aquaculture farmer in the states of Kedah and Penang. Descriptive analysis was applied to identify the socio-demographic characteristics of aquaculture farmer and their level of GAqP. Multiple Linear Regression model was used to analyze the relationship between socio-demographic factors and the level of GAqP. The findings has revealed that the level of GAqP among brackishwater pond farmer is satisfactory where almost 84 per cent of farmer practicing GAqP at the level of 60 per cent and above with the mean value of 71.9 per cent. While the mean level of GAqP for freshwater pond farmer was at 50.3 per cent with only 18.6 percent of them practicing GAqP at the level of 60 per cent and above. Age and having technical knowledge related to aquaculture were the main factors that significantly influence to the level of GAqP among aquaculture farmer. Therefore measures related to the enhancement of technical knowledge among aquaculture farmer should be deliberated in the formulation of aquaculture development programs to ensure the sustainable development of aquaculture in Malaysia.</p>
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Hoque, Md Imdadul, Md Aktarul Islam, and Md Niaz Morshed. "Water quality of Barishal sadar upazila in Bangladesh for drinking, irrigation, aquaculture and livestock consumption." Asian Journal of Medical and Biological Research 6, no. 1 (April 8, 2020): 44–55. http://dx.doi.org/10.3329/ajmbr.v6i1.46478.
Full textAbstract:
A study was conducted to assess of groundwater and surface water quality of Barisal sadar upazila. Total 22 water samples (11 pond water and 11 groundwater) were collected from January to March, 2017. Samples were slightly acidic in nature and 7 pond water not suitable for aquaculture in respect of pH. Samples of pond were “excellent” and groundwater samples were “good” for irrigation except two high salinity group water for irrigation for EC. Calcium indicates the samples were suitable for aquaculture but 7 samples were not suitable due to higher Mg content. In respect of K, 9 samples were not suitable for aquaculture. Cu concentrations found suitable for all purposes. For Fe and Zn samples are suitable for irrigation and consumption. Chloride showed, samples were not suitable for livestock consumption except 7 ponds sample. Samples are not suitable for aquaculture in respect of Cl, Fe and Zn. For Manganese, samples (except 1) found suitable for consumption. Samples were “excellent” for sensitive, semi-tolerant and tolerant crops in respect of B. Not any samples responded to CO3 test and HCO3 concentrations found normal. All water sources free from Arsenic contamination. Phosphorus concentration in groundwater might not be harmful for multipurpose use. SAR categorized all samples “excellent” class for irrigation except 2 groundwater samples. 15 samples were “suitable”, 3 were “marginal” and 4 were “unsuitable” for irrigation in respect of RSC. For HT, 13 were “moderately hard” and 09 were “hard” limit for irrigation and samples were suitable for drinking and livestock consumption.
Asian J. Med. Biol. Res. March 2020, 6(1): 44-55
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Yang, Chu-Wen, Wei-Liang Chao, Chi-Yen Hsieh, and Bea-Ven Chang. "Biodegradation of Malachite Green in Milkfish Pond Sediments." Sustainability 11, no. 15 (August 2, 2019): 4179. http://dx.doi.org/10.3390/su11154179.
Full textAbstract:
Malachite green (MG) is usually applied as a biocide in aquaculture worldwide. The microbial degradation of MG and changes in the microbial community composition of milkfish (Chanos chanos) culture pond sediments were assessed in this study. Three MG-degrading bacteria strains—M6, M10, and M12—were isolated, identified, and characterized. Strains M6, M10, and M12 are closely related to Zhouia amylolytica, Tenacibaculum mesophilum, and Enterobacter cloacae, respectively. The bacterial strains M10 and M12 showed good ability to degrade MG in the sediment. The MG degradation rate was increased after adding MG three more times. The microbial community in the sediment changes with different treatments. The bacterial strains M10 and M12 provide a potential solution for the treatment of sediment of saline aquaculture ponds with MG contamination.