Population genetic structure of the endemic sponge Lubomirskia baikalensis in Lake Baikal in the light of mass disease and mortality events

IF 2.8 2区生物学 Q2 ECOLOGY Freshwater Biology Pub Date : 2024-08-13 DOI:10.1111/fwb.14318

Alena Yakhnenko, Yurij Bukin, Evgeniya Bondar, Igor Khanaev, Sergei Kirilchik, Ilya Kondratov, Valeria Itskovich

引用次数: 0

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从大规模疾病和死亡事件看贝加尔湖特有海绵 Lubomirskia baikalensis 的种群遗传结构

近几十年来，贝加尔湖特有海绵种群出现了大量死亡和疾病，因此对其状况的研究备受关注。为了确定物种易灭绝的可能迹象，开发有助于制定保护措施的适当遗传标记至关重要。本文描述了贝加尔湖特有海绵 Lubomirskia baikalensis 的种群遗传结构，并利用我们开发的一套微卫星标记进行了研究。我们分析了来自贝加尔湖三个流域八个地点的 251 个样本。结果表明，贝加尔湖鲑鱼的基因可分为三个群。造成这种结构的主要原因是幼虫的分散能力较低。尽管所有研究地点都存在死亡和患病个体，但所有种群都处于哈代-温伯格平衡状态，完全没有发现瓶颈效应。这是首次对贝加尔湖特有物种 L. baikalensis 进行遗传连通性研究。有效种群数量变化的重建与钻探样本分析的结果一致，表明有效种群数量在大约 24,000 年前减少了 55.5 倍，这表明贝加尔湖特有海绵目前显然没有灭绝的威胁。

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来源期刊

Freshwater Biology 生物-海洋与淡水生物学

CiteScore

5.90

自引率

3.70%

发文量

162

审稿时长

2 months

期刊介绍： Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.