5 research outputs found

    Capacity strengthening of fish farmers for improving their livelihood in Mymensingh district of Bangladesh

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    This study examines the capacity strengthening status for improving the livelihood of fish farmers of Muktagacha upazila (sub-district) of Bangladesh. A mix method research design was used to collect data from 70 fish farmers of the study area. Nine selected demographic characteristics of the respondents were age, level of education, household size, farm size, fish farming experience, training received on fish farming, access to credit, extension media contact and organizational participation. Findings reveal that half of the respondents (50%) had moderate level of capacity strengthening score while considerable portion of the respondents (36%) had high level of capacity strengthening score. The livelihood status of fish farmers improved to a great extent in five aspects of livelihood (human, social, natural, physical and financial) due to the creation of income generating opportunities after their involvement in fish farming. This study concludes that fish farming has major contributions for the capacity strengthening of fish farmers for improving their livelihood status. 

    Mud crab fishery in climate vulnerable coastal Bangladesh: an analysis towards sustainable development

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    Developing countries are far more vulnerable to climate change impacts than industrialised countries. Most of the world’s poor live in South Asia where they have limited livelihood options that have become even narrower in recent years, indicating a need for alternative income-generating options. Mud crabs (Scylla spp.) are considered to have promising prospects in different parts of the world including Bangladesh, a well-known region for its vulnerability to climate change. At present, this fishery has become a growing venture in coastal Bangladesh, primarily due to the potential of the export market and availability of seed locally. This study included a calculation of the Human Development Index linked to mud crab fishery (HDIMCF) and a strengths, weaknesses, opportunities and threats (SWOT) analysis to clarify the present status of and strategic directions for the mud crab fishery, for the first time. Results revealed an intermediate level of development of mud crab aquaculture, indicating potential alternative livelihood opportunities for vulnerable coastal communities. The SWOT analysis revealed that positive factors, both internal (strengths) and external (opportunities), predominate over negative factors (weaknesses and threats) and that the fishery can be an alternative livelihood option for vulnerable coastal communities. Despite noticeable diversification of the mud crab fishery, dependence on wild seedstock and possible over-exploitation in the wild appear to constrain sustainable development of the fishery. This study’s findings suggest undertaking immediate wild crab stock assessment for determining current status of wild populations. Moreover, modification of the Government of Bangladesh’s existing mud crab policy is needed to better meet growing demand and sustainability of the fishery. Recommendations of this study may be of help in guiding responsible integrated coastal fisheries management and policy

    Fish Sanctuaries as an Ecological Approach to Management for Restoring Fish Biodiversity: A Study on Chikadubi Beel Fish Sanctuary, Bangladesh

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    The fish biodiversity of open water is reducing as rice culture has been intensified due to other environmental threats. The establishment of a fish sanctuary is a way to conserve fish for future generation. A study was conducted to know the impact of the sanctuary on fish biodiversity for six months from August to December 2020. Various Participatory rural appraisal (PRA) tools were used such as Questionnaire interviews, focus group discussion (FGD), Catch monitoring and cross-check interviews were carried out. Data were collected from 50 fishermen using a semi-structured questionnaire interview, Group discussion, and gathering secondary information from different sources. According to the findings, 78 fish species were recorded in the study area where 60 fish species were recorded to be found before establishment of the sanctuary. Baseline production of the sanctuary was 0.58 MT/ha in 2015 which increased to 1.12 MT/ha in 2020 after establishment of the sanctuary. The highest total number of fish species were caught in August (68.45%) and lowest (41.55%) in December in the Chikadubi beel. The dominant fish species in Chikadubi beel was Freshwater shark (Wallago attu) followed by Spotted snakehead (Channa punctatus), Indian river shad (Gadusia chapra) and Jatiputi (Puntius sophore) whereas the least available fish species was Koitor poa (Johnius coitor). Among the total catch comprises different family such Cyprinidae 58.33%, Channidae 16.60%, Bagridae 14.58%, Siluridae 6.25% & Schilbeidae 8.33 % respectively. The outcomes suggest that careful planning, management and regular practices, along with active community participation, can have positive impact on fish sanctuary

    Length-weight relationships and growth pattern of Macrobrachium malcolmsonii (H. Milne-Edwards, 1844) from the river Old Brahmaputra, Bangladesh

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    Study of biological parameters of a species is important for its sustainable management. The length-weight relationships and growth patterns of Macrobrachium malcolmsonii (H. Milne-Edwards, 1844), collected from the river Old Brahmaputra in Bangladesh, were determined in this study based on 359 specimens (carapace length, CL: 11–90 mm; body weight, BW: 0.2–54.4 g) including 308 male and 351 female individuals. For both sexes, intercepts, slopes, and coefficients of determinations of regression analyses between CL and BW varied monthly. The lowest values of intercept (–11.51 and –11.65 for male and female respectively) was recorded in October whereas the highest values were recorded in January for male (–7.01) and March for female (–8.26 for female). The minimum coefficient of determination was 0.784 (for male) and 0.801 (for female) whereas the maximum coefficient of determination was recorded 0.971 (for male) and 0.970 (for female). For male, the b value at 95% Cl revealed that the growth in March, June, July, September and February were isometric and in April, May, October, November and January were allometric. Whereas for female, the growth in March, April, June, July, November, January and February were isometric and was allometric in May, September and October

    Outwelling of nutrients into the Pasur River estuary from the Sundarbans mangrove creeks

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    The Pasur River estuary (PRE), the largest estuary in the Sundarbans mangrove area, provides vital fishery resources and supports millions of livelihoods in the southwestern coastal region of Bangladesh. This study focused on the tidal and run-off effects on the outwelling of nutrients from the Sundarbans mangrove creeks to the PRE. Spatial and temporal variations of nutrient and chlorophyll-a concentrations were assessed by water sampling at 11 stations in the study area from January to December 2019. Dissolved inorganic nutrients and chlorophyll-a were analyzed by standard methods using a spectrophotometer. In the tidal mangrove creeks, dissolved inorganic nitrogen, phosphate, and silica concentrations were significantly higher (p 0.05) different between the two tidal levels. This study showed that the mangrove creeks formed an important link in transporting nutrients from the mangrove forest to the estuary
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