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Publisher Copyright: © 2021 Shanghai Ocean University A value chain analysis is a detailed description of all the activities and services needed to turn a raw product into a marketable good for delivery to final consumers. The mud crab business is considered by most marketing operators to be a profitable and viable business due to the high demand in the international market. Despite the importance of mud crab fishery, there is no structured marketing facilities in Bangladesh. This research aim to analyze the socioeconomic condition of actors, the profitability of farming, mapping the institutional and non-institutional barriers, and provide a better understanding of the possibility of technological interventions in the value chain. Qualitative and quantitative data were collected through participatory rural appraisal tools that include 200 individual interviews, 16 focus group discussions, and 24 key informant interviews conducted in south-west Bangladesh from July to December of 2019. The mud crab value chain analysis revealed that the chain started with crab collection (cultivated and wild harvest), before sale to local vendors, and ended with exporters through several intermediaries. Results noted that most (±95%) exportable crab came from natural sources, with rest (±5%) from aquaculture sector. The average price (USD/kg) ranged from $10.59−14.12 and $12.94−19.42 for male crabs (grade: XXL), followed by $10.00−11.77 and $11.77−17.06 for female (grade: FF1) in domestic and international markets, respectively. Despite the high profitability of these sectors, the livelihood of these stakeholders has remained relatively hard. Multi-pronged approaches, like a nursery or increasing farming and backyard seed production, and possible value addition at the farm level may help farmers.

Climate change-induced sea-level rise, salinity intrusion, sudden water surge, natural calamities, etc. affect the fish biodiversity, food security, and coastal livelihoods that highlight the neces...

A feeding trial was conducted to evaluate the effects of different ratios of fish meal (FM) to a fermented blend (FB: fermented soybean meal and squid by-product blend) on growth and economic perfo...

This article has been retracted: please see Elsevier Policy on Article Withdrawal ( https://www.elsevier.com/about/our-business/policies/article-withdrawal ). This article has been retracted at the request of Editors-in-Chief of Regional Studies in Marine Science, because there is clear evidence that the findings of this work are unreliable due to inadequacy in the methodology, incorrect use of species names, and unauthorized use of data from organizations affiliated with the authors. We apologize for any inconvenience caused.

Human communities inhabiting remote and geomorphically fragile flood plain areas are particularly vulnerable to climate change-related hazards and hydrometeorological extremes. This study presents the community livelihood structure, perception of climate change, and indigenous coping strategies adopted by the local communities in the flood plain areas especially at the Hail haor. Field observations reveal that there have been several recent phenomena that are identified and reported on the manifestations of climate change by the respondent community members. These phenomena includes the following: loss of income (90 %), reduced fish availability (80 %), reduced fish diversity (70 %), reduced migratory bird’s availability (70 %), decreased crop production (70 %), food crisis (70 %), reduced aquatic plants availability (60 %), sudden flood (60 %), increased storm (60 %), decreased water-retaining capacity of beels and haor (60 %), increased drought (50 %), temperature rise (50 %), drying of water supply canal (50 %), scattered rainfall patterns (40 %), increased fish diseases during winter season (40 %), increased human viral diseases (20 %), and introduction of unknown paddy diseases (red coloration of plant, 20 %). The indigenous adaptation and coping strategies were identified. The correlations between coping strategies and physical, human, financial, natural, and social assets were significant. From the present field observation, it is evident that livestock rearing, homestead vegetable gardening, increased fishing time, and change in livelihood options found as most effective options to cope with the adverse effect of climate change. By identifying localized climate change disasters with intensity of impacts and analyzing indigenous coping mechanisms, this study attempts to address the community-based adaptation practices in climate change challenges.