Weinell Jeffrey L, Burbrink Frank T, Das Sunandan, Brown Rafe M
Department of Ecology and Evolutionary Biology and Biodiversity Institute, University of Kansas, 1345 Jayhawk Blvd, Lawrence, KS 66045, USA.
Department of Herpetology, American Museum of Natural History, 200 Central Park West, New York, NY 10024, USA.
R Soc Open Sci. 2024 Aug 7;11(8):240064. doi: 10.1098/rsos.240064. eCollection 2024 Aug.
Estimation of evolutionary relationships among lineages that rapidly diversified can be challenging, and, in such instances, inaccurate or unresolved phylogenetic estimates can lead to erroneous conclusions regarding historical geographical ranges of lineages. One example underscoring this issue has been the historical challenge posed by untangling the biogeographic origin of elapoid snakes, which includes numerous dangerously venomous species as well as species not known to be dangerous to humans. The worldwide distribution of this lineage makes it an ideal group for testing hypotheses related to historical faunal exchanges among the many continents and other landmasses occupied by contemporary elapoid species. We developed a novel suite of genomic resources, included worldwide sampling, and inferred a robust estimate of evolutionary relationships, which we leveraged to quantitatively estimate geographical range evolution through the deep-time history of this remarkable radiation. Our phylogenetic and biogeographical estimates of historical ranges definitively reject a lingering former 'Out of Africa' hypothesis and support an 'Out of Asia' scenario involving multiple faunal exchanges between Asia, Africa, Australasia, the Americas and Europe.
估计快速分化的谱系之间的进化关系可能具有挑战性，在这种情况下，不准确或未解决的系统发育估计可能会导致关于谱系历史地理范围的错误结论。突出这一问题的一个例子是解开眼镜蛇科蛇类生物地理起源所带来的历史挑战，该科包括许多剧毒物种以及对人类无害的物种。这一谱系的全球分布使其成为检验与当代眼镜蛇科物种所占据的众多大陆和其他陆地之间历史动物群交流相关假设的理想群体。我们开发了一套新的基因组资源，包括全球采样，并推断出进化关系的可靠估计，我们利用这一估计通过这一显著辐射的深层历史来定量估计地理范围的进化。我们对历史范围的系统发育和生物地理估计明确拒绝了长期存在的“走出非洲”假说，并支持“走出亚洲”的情景，该情景涉及亚洲、非洲、澳大拉西亚、美洲和欧洲之间的多次动物群交流。
