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The Influence of Land Use and fish farming on the Contents of Ca2+, Mg2+, K+and Na+in Pond and Reservoir Ecosystems in an Agricultural Small Watershed, China

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Journal of Environmental Protection 2021年第12期12卷 1174-1184页

作者： Jiaogen Zhou Caiyun Zhang Jiangsu Provincial Engineering Research Center for Intelligent Monitoring and Ecological Management of Pond and Reservoir Water Environment Huaian China Huaiyin Normal University Huaian China

It is not understood well that how the effects of land use and fish farming on the contents of alkali metals (Ca2+, Mg2+, K+ and Na+) in small water bodies of pond and reservoir ecosystems at the watershed scale. In this study, the concentrations of Ca2+, Mg2+, K+ and Na+ in water bodies were measured for 103 ponds and reservoirs used as fish farming or surrounded by different agricultural land use types in the subtropical hilly watershed of Jinjing (105 km2), China. The two important environmental factors of fishing farming and agricultural land use influenced the spatial variation the contents of alkali metals. The ponds and reservoirs in residential area had significantly higher concentrations of Ca2+ and Na+ than those with other land use types, reflecting the influence of domestic wastewater. Compared with those of natural ponds with non-fish farming, no significant increase of alkali metal contents occurred in fish farming ponds, due to the regular cleaning of ponds by farmers. However, the effect of fish culture on alkali metal contents was still supported indirectly by the fact that the alkali metal contents significantly correlated with nitrate contents in fish farming ponds and but high related with that of DIP in natural ponds. The suitability assessment for irrigation on the pond water indicated that almost all of ponds were suitable for irrigation except some ponds surrounded by residential area and tea plantation. Generally, our results demonstrated that fish farming and agricultural land use affected the contents of alkali metals in ponds and reservoirs. The agricultural water irrigation would be with caution from the ponds with tea plantation and residential area in the subtropical hilly watershed.

关键词： Land Use Alkali Metals fish farming Agricultural Small Watershed Pond and Reservoir

Integration of fish and Poultry farming into Cropping Systems to Improve Production Yields

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Open Journal of Applied Sciences 2022年第12期12卷 2037-2054页

作者： Mbaye Tine Saliou Wade Mbacke Sembene UFR of Agricultural Sciences Aquaculture and Food Technologies (UFR S2ATA) Gaston Berger University Saint-Louis Senegal UFR of Economic Sciences and Management Gaston Berger University Saint-Louis Senegal Department of Animal Biology Faculty of Sciences and Technology Cheikh Anta Diop University Dakar Senegal

This study aims to evaluate and compare the fertilizing effects of fish-breeding water and river water combined or not with composted poultry manure on the growth and production of okra and lettuce crops. Thus, a sample of 2000 Nile tilapia Oreochromis niloticus fry and a sample of 100 Cobb 500 strain chicks were reared and monitored for six months and fifteen days. Poultry manure and fish-breeding water were then collected and used to fertilize and water okra and lettuce crops. Two systems were used for the crops (okra and lettuce) tested in an elementary plot design with replicates for each treatment (T1: fish-breeding water alone;T2: river water alone;T3: fish-breeding water combined with manure;T4: river water combined with manure). Morphometric parameters and phenological traits of okra and lettuce crops as well as the total harvest weight and production yield were evaluated and compared between treatments. The results reveal better growth and higher yields (0.67 kg/m2 vs. 0.45 kg/m2) of okra crops that received treatment T1 compared to T2. The best growth and yields of lettuce were obtained with treatments T3 (3.34 kg/m2) and T1 (1.89 kg/m2) compared to T4 (1.23 kg/m2) and T2 (1.20 kg/m2). These results show that fish-breeding water combined with poultry manure can boost okra and lettuce production and would be a real asset to stimulate local agricultural development. Thus, the adoption of such an agro-ecological approach integrating fish farming and animal husbandry could increase local production and provide food of good nutritional quality.

关键词： Agroecology Poultry fish farming Production Yield Nile Tilapia Cobb 500 Okra Lettuce

Research Progress in the Application of Chinese Herbal Medicines in Aquaculture： A Review

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Engineering 2017年第5期3卷 731-737页

作者： Hongyu Pu Xiaoyu Li Qingbo Du Hao Cui Yongping Xu School of Life Sdences and Biotechnology Dalian University of Technology Dalian 116024 China College of fisheries and Life Science Dalian Ocean University Dalian 116023 China Ministry of Education Center for Food Safety of Animal Origin Dalian 116620 China Liaoning Food Safety of Animal Origin Innovation Team Dalian 116024 China

Due to increasing safety concerns regarding human consumption of fish products, an increasing number of medicinal chemicals are prohibited from use in aquaculture. As a result, Chinese herbal medicines are being increasingly used, coining the use of the term ＂green medicine.＂ Research shows that Chinese herbal medicines have many beneficial effects on fish, including growth promotion, enhancement of disease resistance, and improvement in meat quality. Many effective ingredients have been discovered in Chinese herbal medicines, which function to promote feed intake, improve meat flavor, and increase digestive enzyme activity. They also regulate and participate in processes that improve the specific and non-specific immunity of fish; however, the composition of Chinese herbal medicines is very complex and it is often difficult to identify the effective ingredients. This article reviews the latest research and application progress in Chinese herbal medicines regarding growth and feed utilization, immunity and disease resistance, and the meat quality of cultured fish. It also discusses research on the chemical constituents of classical Chinese medicinal herbs and problems with the application of Chinese herbal medicines in fish culture. This article concludes by proposing that future studies on Chinese herbal medicines should focus on how to cheaply refine and extract the effective ingredients in classical Chinese medicinal herbs, as well as how to use them efficiently in aquaculture.

关键词： Aquaculture Chinese herbal medicines fish farming Research progress

The seasonal dynamics of geochemical characteristics of sediments in the impact zone of the fish farm(Lake Ladoga,Russia)

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Aquaculture and fisheries 2023年第6期8卷 654-660页

作者： Artem Lapenkov Alina Guzeva Ksenia Zaripova Zakhar Slukovskii St.Petersburg Federal Research Center of the Russian Academy of Sciences(SPC RAS) Institute of Limnology of the Russian Academy of SciencesLaboratory of Geography and Hydrology9Sevastyanova St.St.Petersburg196105Russia Institute of the North Industrial Ecology Problems of Kola Science Center of RAS Academgorodok Str.141Apatity184209Russia

This study focuses on the analysis of seasonal dynamics of physicochemical parameters(pH and Eh)and organic matter content in the sediments accumulated within the impact zone of the cage trout farm(Lake Ladoga,Russia).The Ladoga is the largest lake in Europe and there are more than 20 fish farms located in the northern part of the *** geochemical research is necessary for predicting the negative impact of the polluted sediments on both the cage fish and the aquatic *** sampling was conducted during various seasons of the year(February,June,August,October)which were characterized by the different fish feeding *** sediment cores were collected at 7 points,including the cage and reference sites(150 m and 600 m far from the farm).The results showed that the accumulation of organic material released from the studied fish farms was local and the wastes did not enter the sediments at the control ***,the accumulated organic layer can be compacted and partially mineralized during winter ***,strongly reducing conditions in sediments occur due to the accumulation of organic material and low rate of water exchange within the studied ***,there is a potential risk of formation of toxic gases and release of accumulated nutrients and metals from sediments to *** can have a negative impact on benthic and nekton organisms,in particular cage fish.

关键词： Sediments Organic matter Physicochemical parameters fish farming Aquaculture Lake ladoga

Waste production in aquaculture:Sources,components and managements in different culture systems

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Aquaculture and fisheries 2019年第3期4卷 81-88页

作者： Akeem Babatunde Dauda Abdullateef Ajadi Adenike Susan Tola-Fabunmi Ayoola Olusegun Akinwole Laboratory of Aquaculture Department of Fisheries and AquacultureFederal University DutsinmaP.M.B.5001DutsinmaKatsina StateNigeria Laboratory of Pathology Department of Veterinary PathologyFaculty of Veterinary MedicineUniversity of IlorinP.M.B.1515IlorinNigeria National Centre for Genetic Resources and Biotechnology Federal Ministry of Science and TechnologyP.M.B.5382Moor PlantationIbadanOyo StateNigeria Laboratory of Aquaculture Department of Aquaculture and Fisheries ManagementUniversity of IbadanIbadanNigeria

The intensification of aquaculture has emerged as a viable alternative for increasing aquaculture production due to competition that arose from the use of natural resources,such as land and water,by other production and developmental ***,intensification demands increased inputs,such as fish and feed per unit culture area and,therefore,increased waste generation from the aquaculture production *** impact of waste products from aquaculture has increased public concern and threatens the sustainability of aquaculture *** need for increasing the production of aquaculture products cannot be overemphasized and,therefore,there is a need to develop culture systems that will increase fish production with efficient waste management in order to limit environmental degradation resulting from aquaculture wastes and ensure its *** paper reviewed various aspects of waste production from aquaculture,their sources,components,and methods of management,in different culture systems,primarily discussing waste production from feed,chemicals,and *** aimed to establish the sources of wastes,their contents,and potential harms to both the fish culture and the *** for managing wastes in different culture systems were made to ensure an improved and sustainable aquaculture production.

关键词： fish farming Aquaculture effluents Environmental degradation Waste management Sustainable aquaculture

Contribution of Garcinia kola to the Productivity and Economic Profitability of the Community Agricultural Area of Kedougou: Financial and Comparative Analysis of Production Factors

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Journal of Agricultural Chemistry and Environment 2024年第1期13卷 54-66页

作者： Cheikh Sarr Ngor Ndour Abdoulaye Badji Ousmane Ndiaye Hamet Diadhiou Laboratory of Agroforestry and Plant Production Assane Seck University of Ziguinchor Ziguinchor Senegal Enda ECOPOP/Tambacounda Regional Office Tambacounda Senegal Laboratory of Agriculture and Environmental Sciences National High School of Agriculture Thies Senegal Senegalese Institute of Agriculture Research Oceanographic Research Center of Dakar Thiaroye Dakar Senegal

Inland fishing predominates in the Kedougou region, which has no coastline. This type of fishing does not yet meet the local population’s demand for fish products. In response to this concern, a Community Agricultural Estate housing an integrated fish farm was set up in the commune of Bandafassi, in the village of Itato. Since its creation, this production unit has been faced with the problem of sourcing high-quality, low-cost, monosex male Oreochromis niloticus fry. In order to overcome this constraint, the present research focuses on the contribution of Garcinia kola to the productivity and economic profitability of the Itato farm. The aim of the research is to assess fish production in the experimental set-up and the production costs of tilapia in a controlled environment. The comparative study of the various production factors shows disparities only in the input factor, where scenarios 2 and 3 use additional products. These are 17-α-methytestosterone for scenario 2 and Garcinia kola for scenario 3. These products significantly interfere with fish production, with a fairly high mortality rate for scenario 2 (25% for two production cycles/ cohort2 (B5, B6, B7 and B8) treated with 17-α-methytestosterone). As for scenarios 1 and 3, mortalities are 5% with or without recourse to additional products (G. kola). In addition, average fish production for the three (03) scenarios is estimated at 28687.5 kg/2 cycles. It varies from one scenario to another, i.e. 30937.5 kg/2 cycles for scenarios 1 and 3 and 24187.5 kg/2 cycles for scenario 2. It is therefore higher in scenarios 1 and 3 than in scenario 2. This difference is due to the fairly large losses of individuals in scenario 2. Furthermore, the analysis of the profit and loss accounts for tilapia production varies from one scenario to another depending on the type of farm: 476 Franc CFA for scenario 1, 610 Franc CFA for scenario 2 and 472 Franc CFA for scenario 3 (F CFA = franc of the French Colonies of Africa). The Av

关键词： Farm Typology Economic Profitability 17-α-Methytestosterone Garcinia kola fish farming Tilapia

Spatio-Temporal Patterns of Nitrogen and Phosphorus Stoichiometry in Cascade Ponds in an Agricultural Small Watershed and Their Influencing Factors

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Journal of Water Resource and Protection 2022年第12期14卷 759-772页

作者： Jiaogen Zhou Jiangsu Provincial Engineering Research Center for Intelligent Monitoring and Ecological Management of Pond and Reservoir Water Environment Huaiyin Normal University Huai’an China

Ecological stoichiometry of nitrogen and phosphorus is an important indicator to characterize the nitrogen and phosphorus trophic status in aquatic ecosystems. The study of the spatio-temporal patterns of nitrogen and phosphorus stoichiometry is beneficial to the nitrogen and phosphorus pollution management in pond ecosystems. In this study, 18 groups (36 in total) of typical cascade ponds were selected as long-term observations to investigate the spatial distribution patterns of nitrogen and phosphorus component ratios (ratio of total nitrogen to phosphorus: TN:TP, ratio of dissolved nitrogen to phosphorus: TDN:TDP, ratio of particulate nitrogen to phosphorus: PN:PP) in water bodies in the tropical agricultural watershed of Jinjing. The results showed that the average values of TN:TP and TDN:TDP in the upstream ponds were 26.4 and 53.4, respectively, and were more than those in the downstream (22.95 and 48.1, respectively). In contrast, the PN:PP (13.78) in the upstream was significantly lower than that of the downstream (30.39). Furthermore, the factors of rainfall, agricultural land use and fish farming influenced the spatio-temporal variability of the N:P ratios. The ratios of TN:TP and TDN:TDP were higher in the wet season and lower in the dry season. Agricultural land use and fish farming reduced the ratios of the above three nitrogen and phosphorus components in cascade ponds in the study area. Our results show that strengthening agricultural land pollution control and aquaculture management could help to improve water quality of pond ecosystems in the study area.

关键词： Agricultural Land Use fish farming Pond Ecosystems Nitrogen and Phosphorus Component Nitrogen and Phosphorus Stoichiometry

Artificial reproduction of neotropical fish:Extrusion or natural spawning?

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Natural Science 2013年第7期5卷 1-6页

作者： David Augusto Reynalte-Tataje Sunshine de Avila-Simas Juan Ramon Esquivel Garcia Evoy Zaniboni-Filho Departamento de Aquicultura Laboratório de Biologia e Cultivo de Peixes de Agua DoceUniversidade Federal de Santa CatarinaCentro de Ciencias AgráriasFlorianópolisBrazil Estacao de Piscicultura Panamá Paulo LopesBrazil Programa de Pós-Graduacao em Aquicultura Departamento de AquiculturaUniversidade Federal de Santa CatarinaCentro de Ciencias AgráriasFlorianópolisBrazil

In captive conditions, most neotropical migratory species do not have the necessary incentive to complete gonadal maturation and spawning, which require induction techniques, usually with the use of hormones. Numerous studies have therefore focused on finding an effective hormonal treatment to induce reproduction for each species. A standard treatment was successfully developed for most of these species, which consists of two doses of Carp Pituitary Extract (CPE), totaling 5.5 mgCPE/kg of fish. However, the best strategy for the subsequent fertilization of gametes is still unclear. This study was conducted with five species of commercial interest that do not reproduce naturally in captivity: pacu Piaractus mesopotamicus, piracanjuba Brycon orbignyanus, curimbatá Prochilodus lineatus, dourado Salminus brasiliensis and piau?u Leporinus macrocephalus. Ninety-nine broodstocks were used, consisting of males and females of the five species to compare two techniques for spawning and fertilization: extrusion followed by the dry method and natural spawning. All fish were induced with two hormone doses, i.e., 0.5 and 5.0 mgCPE/kg, and were subjected to one of the two types of fertilization. The results were compared using the fertilization rate, number of oocytes produced, relative fecundity and the broodstocks' survival rate on days following spawning. All species responded positively to spawning for extrusion, and only S. brasiliensis did not spawn through the natural spawning method. The natural spawning technique provided a higher fertilization rate of eggs and a greater broodstock survival rate (P S. brasiliensis. It was concluded that the natural spawning technique can increase the production of viable eggs and reduce the mortality of species during breeding, except for S. brasiliensis.

关键词： Induced Breeding Spawning fish farming Broodstocks Induction Techniques