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The study was carried out in Matiranga Upazila, Bandarban district, which is considered one of Bangladesh's major hill tract regions. The study aimed to identify present farming conditions, prospects, and problems and suitable solutions to the problems of fish farming. Different participatory rapid appraisal tools such as focus group discussion, fi...
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... Upazila in the district of Khagrachari, located in the hill tracts of Chattogram, the southeastern part of Bangladesh. Twenty (33.34%) fish farms were selected among the 60 fish farms of the study area for both survey and laboratory analysis. The study area map was constructed using "Arc-GIS" (Version-10.3) software based on the GPS coordinates (Fig. ...
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horizontal and vertical expansion of fish culture in the state because of its vast underlying untapped brackish water resources. The study identified that the value realized in fish production was subjected to high instability and may be related to the demand-supply mismatch in the domestic marketing of fish in Gujarat. The state had performed well...
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... The twin challenges of feeding a rapidly growing global population and providing livelihood opportunities in light of dwindling commercial fishing have fueled the expansion of aquaculture in the country's rural and urban landscapes [4]. Polyculture, an integrated approach involving the simultaneous farming of multiple species in the same body of water, has already gained significant momentum as an efficient method to optimize productivity and resource use in aquaculture ponds [5]. In this type of pond, the structural and interactive intricacies of the microbes play a critical role in shaping the ecosystem dynamics [6]. ...
... Remarkably, the inadequacy of capital was reported as the least frequent problem. Scientifically, this is noteworthy as access to capital is often considered a fundamental constraint in agricultural and aquaculture development (Bosma et al., 2012;Rashid et al., 2020;Rana et al., 2022). The relatively low reporting of this challenge may indicate that other pressing issues, high cost of interest rates related to Bank loans, input costs and market access are currently more salient for fish farmers in Vihiga County. ...
In Kenya, aquaculture plays a significant role in enhancing the livelihoods of rural communities by boosting the local economy and diversifying protein sources. Although Vihiga County in Western Kenya boasts considerable potential for aquaculture, it paradoxically experiences some of the highest levels of poverty and malnutrition in the country. The profitability of fish farming has also been affected by inefficiencies and poor resources, disproportionately affecting the income and nutritional value of rural poor who rely on Aquaculture as a source of cheap protein. The study was conducted in Vihiga County to assess the cost–benefit of aquaculture production, selecting 100 fish farmers through a stratified random sampling technique from five sub‐counties. A descriptive research design was employed, and data analysis was conducted using correlation and regression analysis with SPSS. Budgetary techniques were used for the cost–benefit analysis. Data presentation was by comparing the mean and standard deviation in US dollars of different pond size production. The research findings indicated that the size and type of pond do not have a significant correlation and differences in production ( p‐ value >.05). There is a strong positive correlation between the size of the pond and the stocking density. The variable cost (VC) has a positive correlation with pond productivity meaning that an increase in VC leads to an increase in production. And is not statistically significant ( p ‐value = .21827, p ‐value >.05). Moreover, the total cost (TC) correlation is statistically significant ( p ‐value = .0351, p < .05). Larger ponds are more profitable but require higher costs production than smaller ponds. The study concludes that pond size significantly impacts productivity, advocating for smaller ponds to achieve higher net returns with lower production costs. Major challenges include high costs of feeds, inputs, fish diseases, and post‐harvest losses. Key policy variables influencing aquaculture in Vihiga County include infrastructure, fish feed production, capital, and fisheries extension services. Adequate financial support from both National and County governments is crucial for sustainable aquaculture in alignment with Kenya's Vision 2030 and Global Sustainable Development Goals. Policymakers are urged to assist small‐scale farmers with financing, training, and market information to optimize returns on investment.
... Essential resources such as fish seeds, feeds, and other on-farm inputs are readily available to most pond and gher owners [50][51][52][53][54][55]. However, the expansion of aquaculture faces a significant constraint in the form of limited availability of quality seeds [56,57]. The region faced substantial setbacks between 2007 and 2010, particularly due to the impact of two cyclones, Aila and Sidr, which severely affected the fisheries sector in Mirsharai [58,59]. ...
Aims: This study aims to comprehensively assess the fisheries resources in the Mirsharai coastal area of Chattogram district, focusing on their contribution to both local and national economies. The research seeks to identify challenges and vulnerabilities, particularly those arising from climate change, impacting pond owners, fish farmers, hatchery owners, and nursery owners in the region. Study Design: The study adopts a cross-sectional design, employing field surveys and interviews to collect data on fish production, and challenges faced by stakeholders. The cross-sectional approach allows for a holistic understanding of the current state of fisheries resources and their interactions with climatic factors. Place and Duration of Study: The research was conducted in Mirsharai, a coastal upazila of Chattogram district, Bangladesh. The study encompasses data collected during the January to December 2016, providing insights into the dynamics of fish production, and challenges faced by fisheries stakeholders in Mirsharai. Methodology: Field surveys were conducted to gather quantitative data on fish production from both capture and culture fisheries. Additionally, interviews with pond owners, fish farmers, hatchery owners, and nursery owners were conducted to qualitatively assess the impact of challenges faced by fisheries stakeholders in Mirsharai on their operations and economic well-being. The combination of quantitative and qualitative methods ensures a comprehensive analysis. Results: The average fish production in capture fisheries was determined to be 63 kg/ha, while culture fisheries, specifically pond aquaculture, yield an average of 1656 kg/ha. The results highlight the significant impact of challenges faced by fisheries stakeholders in Mirsharai on the local fisheries sector, revealing challenges related to market timing, post-larvae availability, and pricing that affect the economic sustainability of stakeholders. Conclusion: The findings underscore the vulnerability of Mirsharai's fisheries to challenges faced by fisheries stakeholders in Mirsharai, emphasizing economic losses for fish farmers, hatchery owners, and nursery owners. The conclusion calls for urgent adaptive measures and climate-resilient strategies in the fisheries sector to ensure sustainability and viability in the face of evolving climatic conditions. Implication: This study has implications for fisheries management and policy development, emphasizing the need for proactive measures to address climate-induced challenges and sustain the economic well-being of fisheries stakeholders in the Mirsharai coastal area.
... It demonstrates that the age range of the fish farmers was 25 to 65 years. Majority of the respondents (44%) were middle aged (36)(37)(38)(39)(40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50), compared to 38 percent being old aged (>50) and 18 percent being young (up to 35). The majority of participants (65%) had primary to secondary level education, according to data on their educational qualifications, 10% of the participants had higher secondary education, 8% had above higher secondary education and 17% had no education. ...
... Due to inadequate training, farmers may have had little knowledge of using artificial feed for catfish culture. Rana et al. (2022) [39] and Uddin et al. [50] also found similar findings. There were also various problems associated with knowledge of using artificial feed for catfish culture, such as lack of technical knowledge on feed application method, artificial feed degrades the quality of the soil, inaccessibility of feed industries, and poor access to market. ...
Bangladesh's numerous inland lakes and river systems make capture fisheries and aquaculture here very promising. Bangladesh is producing more catfish since they are exceptionally resilient and can tolerate harsh weather conditions and unstable habitats. The aims of the research were to assess fish farmers' knowledge of using artificial feed for catfish culture and to identify the variables affecting their knowledge level. Thus, the research was conducted in three villages of Gauripur upazila (sub-district) of Mymensingh district. In-person interviews were conducted with 80 randomly chosen catfish farmers. According to the findings, the vast majority of respondents (63%) had medium-level and 32% had high and 5% of farmers found which have a low level of knowledge on using artificial feed for catfish culture. Formal education, fish farming experience, farm size, annual income, social mobility, communication exposure and training received were positively and significantly correlated with the knowledge of the respondents. Multiple linear regression analysis confirmed that formal education, communication exposure, and training received significantly influenced fish farmers' knowledge. High cost of fish feed, inaccessibility of good quality fish feed and lack of proper training were identified as the major problems faced by the fish farmers. In connection to these difficulties, development agencies such as Department of Fisheries, Ministry of Fisheries and Livestock, Bangladesh Fisheries Research Institute, relevant non-government and private organizations should take appropriate action like regular need based training, method demonstration, result demonstration, field day, other extension activities to increase the fish farmers' knowledge on using artificial feed for catfish culture.
... Similarly, mineral elements, including micro and macro elements, play critical roles in fish physiological activities such as osmoregulation, scale and skeleton development, and intermediate biochemistry, as stated by [2]. Assessing fish mineral requirements can be challenging due to the trace amounts required for some minerals, while others are obtained in larger quantities from water and through the gills, as observed in Atlantic salmon (Salmo salar) [71,72]. Therefore, the lack of minerals can result from dietary imbalances and the intricate interactions between nutritional elements, as noted by [36]. ...
To consume or not to consume farmed fish diagnosed with nutritional disorders within an aquaculture culture system is a question that resonates with fisheries and aquaculture experts worldwide. Proper fish health management in aquaculture should be a critical area of concern for all fish farmers. It has become a fundamental requirement for achieving sustainable aquaculture production. However, many fish farmers, particularly in developing countries lack knowledge about nutritional fish diseases and how to effectively manage them on the farm. Like human health, farmed fish's health in aquaculture systems should be a daily priority for fish farmers. Nutritional fish diseases are often overlooked by the majority of fish farmers, even at the commercial level. Most Fish farmers may not realize that nutritional disease prevention can be achieved through the Review Article Syanya et al.; Eur. 42 use of well-formulated fish feeds that meet all the nutritional requirements for fish growth. Additionally, maintaining good water quality and implementing best management practices are essential to ensure that the fish stock remains healthy in the culture system. Since different fish species have varying nutritional dietary requirements, it is important to formulate the right nutritional diet based on the specific fish species being cultured. Fish feeds should contain the necessary nutrients to ensure opportunistic disease resistance. Furthermore, fish farmers should be familiar with early diagnosis techniques for nutritional fish disease disorders. This ensures that the harvested fish reaching the market does not raise concerns about the quality and safety of farmed fish products. Failure to diagnose nutritional disorders associated with poor feeds and diets can create doubts in the rapidly growing aquaculture industry. Therefore, this review aims to explore the nutritional requirements of farmed fish species, the impact of nutritional deficiencies on human and public health, the causes of nutritional disorders, and viable therapies for managing these diseases in farmed fish. The data for this review article were collected from various secondary sources, including internationally reputable peer-reviewed articles, conference proceedings reports, internet searches, and more. The findings highlight the importance of providing aquaculture farmers with essential information on fish nutrition-related disease control, as nutritional diseases have been found to be detrimental to fish health and public health. Moreover, many farmed fish affected by nutritional disorders have entered the global fish market, raising questions about their impact on human health. Therefore, it is crucial for fish farmers to prioritize early diagnosis of nutritional fish diseases to ensure the safety of farmed fish in the market and maintain consumer confidence in farmed fish globally. The study recommends further research into the potentially lethal effects of different nutritional fish diseases, particularly when consumed in large quantities and to the environment especially when dead fish is discarded in the backwaters of an aquatic ecosystem.
Bacterial antimicrobial resistance (AMR) has emerged as a significant concern worldwide. The microbial community profile and potential AMR level in aquaculture ponds are often undervalued and attract less attention than other aquatic environments. We used amplicon and metagenomic shotgun sequencing to study microbial communities and antimicrobial resistance in six freshwater polyculture ponds in rural and urban areas of Bangladesh. Amplicon sequencing revealed different community structures between rural and urban ponds, with urban ponds having a higher bacterial diversity and opportunistic pathogens including Streptococcus, Staphylococcus, and Corynebacterium. Despite proteobacterial dominance, Firmicutes was the most interactive in the community network, especially in the urban ponds. Metagenomes showed that drug resistance was the most common type of AMR found, while metal resistance was only observed in urban ponds. AMR and metal resistance genes were found mainly in beta and gamma-proteobacteria in urban ponds, while AMR was found primarily in alpha-proteobacteria in rural ponds. We identified potential pathogens with a high profile of AMR and metal resistance in urban aquaculture ponds. As these ponds provide a significant source of protein for humans, our results raise significant concerns for the environmental sustainability of this food source and the dissemination of AMR into the food chain.
In West Bengal, a large fraction of derelict and semi-derelict freshwater wetlands are recorded especially in the arid south-western districts. Among these, West Midnapore district holds the highest percentage of derelict and semi-derelict wetlands (45.13%). Out of the available culturable wetland areas in the district, 22.47% is not utilised for effective fish culture. Fish being a major component of diet in the state, these derelict and semi-derelict wetlands could be an important source of fish production, meeting the high fish demand of the state. With this background, a study based on participatory approach was conducted at West Midnapore, to decipher the present status of the wetlands, reasons of their degeneration and of comparatively low fishery productivity and to offer some recommendations for their better utilization. A few participatory rural appraisal techniques such as, semi-structured interviews, focus group discussions, Venn diagrams, matrix ranking, rank based quotient, pairwise ranking or priority grid and strengths, weaknesses, opportunities, threats (SWOT) analysis were employed for the purpose. The results revealed lack of proper management of the wetlands, declining water quality, inadequacy of proper scientific trainings of fish farmers and dearth of mass awareness as the major concerns. The study provided a rare opportunity to the local people to ventilate their perceptions about the issues and in turn be a part of the decision making and planning mechanism. Therefore, it is expected that the results and suggestions highlighted in the study will aid the stakeholders and policy makers not only to promote aquaculture in the district but also to ensure employment, food security and wetland restoration and conservation in future.
