气候变化领域集成服务门户(CCPortal): Fifty million years of beetle evolution along the Antarctic Polar Front

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DOI	10.1073/pnas.2017384118
	Fifty million years of beetle evolution along the Antarctic Polar Front
	Baird H.P.; Shin S.; Oberprieler R.G.; Hullé M.; Vernon P.; Moon K.L.; Adams R.H.; McKenna D.D.; Chown S.L.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:24
英文摘要	Global cooling and glacial–interglacial cycles since Antarctica’s isolation have been responsible for the diversification of the region’s marine fauna. By contrast, these same Earth system processes are thought to have played little role terrestrially, other than driving widespread extinctions. Here, we show that on islands along the Antarctic Polar Front, paleoclimatic processes have been key to diversification of one of the world’s most geographically isolated and unique groups of herbivorous beetles—Ectemnorhinini weevils. Combining phylogenomic, phylogenetic, and phylogeographic approaches, we demonstrate that these weevils colonized the sub-Antarctic islands from Africa at least 50 Ma ago and repeatedly dispersed among them. As the climate cooled from the mid-Miocene, diversification of the beetles accelerated, resulting in two species-rich clades. One of these clades specialized to feed on cryptogams, typical of the polar habitats that came to prevail under Miocene conditions yet remarkable as a food source for any beetle. This clade’s most unusual representative is a marine weevil currently undergoing further speciation. The other clade retained the more common weevil habit of feeding on angiosperms, which likely survived glaciation in isolated refugia. Diversification of Ectemnorhinini weevils occurred in synchrony with many other Antarctic radiations, including penguins and notothenioid fishes, and coincided with major environmental changes. Our results thus indicate that geoclimatically driven diversification has progressed similarly for Antarctic marine and terrestrial organisms since the Miocene, potentially constituting a general biodiversity paradigm that should be sought broadly for the region’s taxa. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Antarctica; Herbivory; Island biogeography; Paleoclimate; Species radiation
语种	英语
scopus关键词	Africa; angiosperm; Antarctica; article; biodiversity; cladistics; environmental change; feeding; fish; glaciation; habitat; herbivory; island biogeography; Miocene; nonhuman; paleoclimate; penguin; refugium; species differentiation; terrestrial species; weevil
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238523
作者单位	School of Biological Sciences, Monash University, Clayton, VIC 3800, Australia; Department of Biological Sciences, University of Memphis, Memphis, TN 38152, United States; Center for Biodiversity Research, University of Memphis, Memphis, TN 38152, United States; School of Biological Sciences, Seoul National University, Seoul, 08826, South Korea; Australian National Insect Collection, Commonwealth Scientific and Industrial Research Organisation, Canberra, ACT 2601, Australia; Institut de Génétique, Environnement et Protection des Plantes, Institut national de recherche pour l’agriculture, l’alimentation et l’environnement, Université de Rennes, Le Rheu, 35653, France; Université de Rennes, CNRS, UMR 6553 ECOBIO, Station Biologique, Paimpont, 35380, France; Department of Computer and Electrical Engineering and Computer Science, Florida Atlantic University, Boca Raton, FL 33431, United States; Securing Antarctica’s Environmental Future, School of Biological Sciences, Monash University, Clayton, VIC 380...
推荐引用方式 GB/T 7714	Baird H.P.,Shin S.,Oberprieler R.G.,et al. Fifty million years of beetle evolution along the Antarctic Polar Front[J],2021,118(24).
APA	Baird H.P..,Shin S..,Oberprieler R.G..,Hullé M..,Vernon P..,...&Chown S.L..(2021).Fifty million years of beetle evolution along the Antarctic Polar Front.Proceedings of the National Academy of Sciences of the United States of America,118(24).
MLA	Baird H.P.,et al."Fifty million years of beetle evolution along the Antarctic Polar Front".Proceedings of the National Academy of Sciences of the United States of America 118.24(2021).