Genetic Structural Changes While Maintaining Effective Population Size of Bighead Catfish in Nong Han Lake: Implications of Metapopulation Dynamics or Release Activities

IF 2 3区 农林科学 Q2 FISHERIES
Chananya Patta, Kednapat Sriphairoj, Trifan Budi, Dominic Kwesi Quanoo, Ton Huu Duc Nguyen, Wattanawan Jaito, Piangjai Chalermwong, Tavun Pongsanarm, Chadaphon Thatukan, Wongsathit Wongloet, Thitipong Panthum, Thanyapat Thong, Phanitada Srikampa, Worapong Singchat, Ryan Rasoarahona, Ekaphan Kraichak, Narongrit Muangmai, Satid Chatchaiphan, Sittichai Hatachote, Aingorn Chaiyes, Chatchawan Jantasuriyarat, Visarut Chailertlit, Warong Suksavate, Jumaporn Sonongbua, Jiraboon Prasanpan, Sunchai Payungporn, Kyudong Han, Agostinho Antunes, Prapansak Srisapoome, Sahapop Dokkaew, Prateep Duengkae, Uthairat Na-Nakorn, Yoichi Matsuda, Kornsorn Srikulnath
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引用次数: 0

Abstract

The Bighead Catfish (Clarias macrocephalus) plays crucial roles in the ecosystem and as a protein source for humans in Nong Han Lake, Thailand, but their ecological and population dynamics, along with their genetic diversity and structure, are poorly understood. Therefore, the dynamics of genetic diversity and differentiation of bighead catfish populations in Nong Han Lake were investigated during 2018–2023 to provide essential insights into preserving biodiversity and maintaining ecological balance. Microsatellite genotyping was used to assess the genetic diversity of one bighead catfish population in 2018, two populations in 2023, and one hatchery population. Potentially stable, effective population sizes and distinct genetic clusters of these populations were identified, which represented the resilience of populations and the complexity of their genetic dynamics. Genetic differentiation between sample dates and among populations suggested that limited recent and historical genetic exchanges could potentially influence genetic structure. The impact of ecological factors, including flooding, metapopulation dynamics, and human interventions, was indicated by unique and shared gene pools among populations and subpopulations in different years. Ongoing assessment of genetic diversity and structure of bighead populations is essential for developing conservation strategies and ensuring sustainable management.

农汉湖鳙鱼维持有效种群规模时的遗传结构变化:超种群动态或放生活动的意义
大头鲶鱼(Clarias macrocephalus)在泰国农汉湖的生态系统中起着至关重要的作用,也是人类的蛋白质来源,但人们对其生态和种群动态以及遗传多样性和结构知之甚少。因此,研究2018-2023年农汉湖鳙鱼种群遗传多样性和分化动态,为保护生物多样性和维持生态平衡提供重要依据。采用微卫星基因分型对2018年1个鳙鱼种群、2023年2个鳙鱼种群和1个孵化场种群的遗传多样性进行了评估。这些种群的潜在稳定、有效的种群规模和独特的遗传集群,代表了种群的恢复力和遗传动态的复杂性。样本日期之间和种群之间的遗传差异表明,有限的近期和历史遗传交换可能潜在地影响遗传结构。洪水、超种群动态和人为干预等生态因子的影响表现为不同年份种群和亚种群间独特而共有的基因库。持续评估高头鱼种群的遗传多样性和结构对于制定保护战略和确保可持续管理至关重要。
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来源期刊
Fisheries Management and Ecology
Fisheries Management and Ecology 农林科学-渔业
CiteScore
3.80
自引率
5.00%
发文量
77
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.
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