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IF 2 3区农林科学 Q2 FISHERIES

Fisheries Management and Ecology Pub Date : 2024-10-12 DOI:10.1111/fme.12746

Debasish Saha, Nishita Mojumder, Shuvagato Mondal, Md. Nahiduzzaman, Md. Jalilur Rahman, Abdullah-Al Mamun, Md. Abdul Wahab

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引用次数: 0

摘要

孟加拉国的黄尾鲶（Pangasius pangasius）种群正面临着迫在眉睫的威胁，导致其濒临灭绝。我们利用渔民（n = 155）的传统科学知识（CSK）和当地生态知识（LEK）来确定梅格纳河口黄尾鲴的育苗场和产卵季节。利用渔民的当地生态知识（汇合/流入区、水流、水深、渔获量数据和浊度）确定了 19 个育苗场，随后通过 CPUE 数据进行了验证。根据 GSI（性腺指数）和 LEK（58.06% 的渔民确定了产卵季节），产卵高峰期为 7 月至 9 月。繁殖力（810,980 ± 455,679）和状态系数（0.94-1.52）通过 CSK 进行量化。利用 CSK 和 LEK 划分育苗场和产卵季节，凸显了 LEK 作为鱼类种群管理工具的价值，值得政策推荐和广泛应用。

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Combining Local Ecological Knowledge (LEK) and Conventional Scientific Knowledge (CSK) for Exploring Nursery Grounds and Spawning Biology of Yellowtail Catfish Pangasius pangasius in the Meghna River Estuary, Bangladesh

The yellowtail catfish (Pangasius pangasius) population in Bangladesh is facing imminent threats that led to endangered status. We used conventional scientific knowledge (CSK) and local ecological knowledge (LEK) of fishers (n = 155) to identify nursery grounds and spawning seasons of yellowtail catfish in the Meghna river estuary. Nineteen nursery grounds were pinpointed using fishers' LEK (confluence/influent zone, current, depth, catch data, and turbidity) and later validated by CPUE data. The peak spawning season was identified in July–September based on GSI (gonadosomatic index) and LEK (58.06% of fishers identified the spawning season). Fecundity (810,980 ± 455,679) and condition factor (0.94–1.52) were quantified with CSK. Using CSK and LEK to delineate nursery grounds and spawning season underscores the value of LEK as a tool for fish population management that deserves policy recommendation and wider application.

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来源期刊

Fisheries Management and Ecology 农林科学-渔业

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

12-24 weeks

期刊介绍： Fisheries Management and Ecology is a journal with an international perspective. It presents papers that cover all aspects of the management, ecology and conservation of inland, estuarine and coastal fisheries. The Journal aims to: foster an understanding of the maintenance, development and management of the conditions under which fish populations and communities thrive, and how they and their habitat can be conserved and enhanced; promote a thorough understanding of the dual nature of fisheries as valuable resources exploited for food, recreational and commercial purposes and as pivotal indicators of aquatic habitat quality and conservation status; help fisheries managers focus upon policy, management, operational, conservation and ecological issues; assist fisheries ecologists become more aware of the needs of managers for information, techniques, tools and concepts; integrate ecological studies with all aspects of management; ensure that the conservation of fisheries and their environments is a recurring theme in fisheries and aquatic management.