Production trends and challenges for biodiversity conservation and sustainable fisheries management of Kaptai Lake the Largest Reservoir in Bangladesh

Abdus Salam Mohammad, . and Hossain Md Shakhawate, . and Shawket Rupok Quazi Sunjida, . and Haque Md Niamul, . and Suman Kamrul Hassan, . Production trends and challenges for biodiversity conservation and sustainable fisheries management of Kaptai Lake the Largest Reservoir in Bangladesh. pp. 145-158. ISSN 0116-6514

Kaptai Lake (KL) the largest artificial lake in Bangladesh supports an important inland open water fishery. Nevertheless detailed studies on its fish diversity and environmental threats are still limited. Hence a study was conducted to evaluate the current fish management scenarios fish production relative abundance to improve the production and biodiversity of KL. Data were collected from stakeholders through personal observation focus group discussions and cross-check interviews from September 2018 to July 2019. The fish production of KL increased from 1 200 metric tons (MT) in 1965“1966 to 10 577 MT in 2018“2019. The output of the lake was dominated by small fish remarkably Gudusia chapra (Hamilton 1822) Gonialosa manmina (Hamilton 1822) and Corica soborna Hamilton 1822 accounting for 64 of the total production in 2018“2019. A total of seventy-six fish species were observed under ten orders including seven exotic fish species. According to the IUCN Bangladesh 14 of total species were identified as vulnerable 11 as endangered 3 as critically endangered 11 as near threatened and 51 as least concern. The study also identified that climate change and various human-driven causes threaten the fish production and biodiversity of this lake. These findings suggest that community-based fisheries management protection of natural breeding grounds of carps control of pollution amendment of existing fishing laws and collaborative research would be a necessary approach for mitigating the negative environmental impact of this lake. The overall practical knowledge of this investigation could assist in policymaking and further research.

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Abstract

Kaptai Lake (KL) the largest artificial lake in Bangladesh supports an important inland open water fishery. Nevertheless detailed studies on its fish diversity and environmental threats are still limited. Hence a study was conducted to evaluate the current fish management scenarios fish production relative abundance to improve the production and biodiversity of KL. Data were collected from stakeholders through personal observation focus group discussions and cross-check interviews from September 2018 to July 2019. The fish production of KL increased from 1 200 metric tons (MT) in 1965“1966 to 10 577 MT in 2018“2019. The output of the lake was dominated by small fish remarkably Gudusia chapra (Hamilton 1822) Gonialosa manmina (Hamilton 1822) and Corica soborna Hamilton 1822 accounting for 64 of the total production in 2018“2019. A total of seventy-six fish species were observed under ten orders including seven exotic fish species. According to the IUCN Bangladesh 14 of total species were identified as vulnerable 11 as endangered 3 as critically endangered 11 as near threatened and 51 as least concern. The study also identified that climate change and various human-driven causes threaten the fish production and biodiversity of this lake. These findings suggest that community-based fisheries management protection of natural breeding grounds of carps control of pollution amendment of existing fishing laws and collaborative research would be a necessary approach for mitigating the negative environmental impact of this lake. The overall practical knowledge of this investigation could assist in policymaking and further research.

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Item Type:	Article
AGROVOC Term:	Biodiversity
AGROVOC Term:	Fisheries
AGROVOC Term:	Reservoirs
AGROVOC Term:	Fishery management
AGROVOC Term:	Questionnaires
AGROVOC Term:	Water pollution
AGROVOC Term:	Climate change
AGROVOC Term:	Fish production
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9893

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