摘要：人口结构的变化和古老的遗传渗入事件可能会解决澳大利亚壁虎的列万廷悖论。

IF 2.6 2区环境科学与生态学 Q2 ECOLOGY

Evolution Pub Date : 2025-06-14 DOI:10.1093/evolut/qpaf085

Jente Ottenburghs

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引用次数: 0

摘要

列万廷悖论关注的是遗传多样性和种群规模之间的弱相关性，挑战了中性理论的预测。Lau等人（2025）研究了Gehyra壁虎的这一悖论，发现范围大小与杂合度呈正相关。然而，这种关系在娜娜组中并不显著，这表明有额外的进化力量参与其中。种群扩张、局部种群动态和古代遗传渗入可能有助于形成遗传多样性，突出了遗传漂变之外进化过程的复杂性。

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Digest: Demographic changes and ancient introgression events might resolve Lewontin's Paradox in Australian geckos.

Lewontin's Paradox concerns the weak correlation between genetic diversity and population size, challenging predictions of neutral theory. Lau et al., (2025. Range size variably predicts genetic diversity in Gehyra geckos. Evolution, qpaf057. doi:10.1093/evolut/qpaf057) investigated this paradox in Gehyra geckos, finding a positive correlation between range size and heterozygosity. However, this relationship was not significant in the nana group, suggesting additional evolutionary forces are involved. Population expansion, local population dynamics, and ancient introgression likely contributed to shaping genetic diversity, highlighting the complexity of evolutionary processes beyond genetic drift.

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来源期刊

Evolution 环境科学-进化生物学

CiteScore

5.00

自引率

9.10%

发文量

审稿时长

3-6 weeks

期刊介绍： Evolution, published for the Society for the Study of Evolution, is the premier publication devoted to the study of organic evolution and the integration of the various fields of science concerned with evolution. The journal presents significant and original results that extend our understanding of evolutionary phenomena and processes.