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Dire wolves were the last of an ancient New World canid lineage
Nature ( IF 42.778 ) Pub Date : 2021-01-13 , DOI: 10.1038/s41586-020-03082-x
Angela R. Perri; Kieren J. Mitchell; Alice Mouton; Sandra Álvarez-Carretero; Ardern Hulme-Beaman; James Haile; Alexandra Jamieson; Julie Meachen; Audrey T. Lin; Blaine W. Schubert; Carly Ameen; Ekaterina E. Antipina; Pere Bover; Selina Brace; Alberto Carmagnini; Christian Carøe; Jose A. Samaniego Castruita; James C. Chatters; Keith Dobney; Mario dos Reis; Allowen Evin; Philippe Gaubert; Shyam Gopalakrishnan; Graham Gower; Holly Heiniger; Kristofer M. Helgen; Josh Kapp; Pavel A. Kosintsev; Anna Linderholm; Andrew T. Ozga; Samantha Presslee; Alexander T. Salis; Nedda F. Saremi; Colin Shew; Katherine Skerry; Dmitry E. Taranenko; Mary Thompson; Mikhail V. Sablin; Yaroslav V. Kuzmin; Matthew J. Collins; Mikkel-Holger S. Sinding; M. Thomas P. Gilbert; Anne C. Stone; Beth Shapiro; Blaire Van Valkenburgh; Robert K. Wayne; Greger Larson; Alan Cooper; Laurent A. F. Frantz

Dire wolves are considered to be one of the most common and widespread large carnivores in Pleistocene America1, yet relatively little is known about their evolution or extinction. Here, to reconstruct the evolutionary history of dire wolves, we sequenced five genomes from sub-fossil remains dating from 13,000 to more than 50,000 years ago. Our results indicate that although they were similar morphologically to the extant grey wolf, dire wolves were a highly divergent lineage that split from living canids around 5.7 million years ago. In contrast to numerous examples of hybridization across Canidae2,3, there is no evidence for gene flow between dire wolves and either North American grey wolves or coyotes. This suggests that dire wolves evolved in isolation from the Pleistocene ancestors of these species. Our results also support an early New World origin of dire wolves, while the ancestors of grey wolves, coyotes and dholes evolved in Eurasia and colonized North America only relatively recently.



中文翻译:

可怕的狼是古代新世界犬科动物的最后一支

可怕的狼被认为是在更新世美国最常见的和广泛的大型食肉动物的一个1,但相对知之甚少其进化或灭绝。在这里,为了重建野狼的进化史,我们对了从13,000年前到50,000年前的亚化石遗址的五个基因组进行了测序。我们的结果表明,尽管可怕的狼在形态上与现存的灰太狼相似,但它们却是高度分化的血统,大约在570万年前就与活着的狼分开了。与跨越Canidae 2,3的众多杂交示例相反,没有证据表明可怕的狼与北美灰狼或土狼之间存在基因流动。这表明可怕的狼是与这些物种的更新世祖先孤立地进化而来的。我们的研究结果还支持了新世界中狼的起源,而灰狼,土狼和野鸭的祖先是在欧亚大陆进化的,并且只是在最近才在北美殖民。

更新日期:2021-01-13
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