气候变化领域集成服务门户(CCPortal): Genome-wide analyses reveal drivers of penguin diversification

CCPortal

DOI	10.1073/pnas.2006659117
	Genome-wide analyses reveal drivers of penguin diversification
	Vianna J.A.; Fernandes F.A.N.; Frugone M.J.; Figueiró H.V.; Pertierra L.R.; Noll D.; Bi K.; Wang-Claypool C.Y.; Lowther A.; Parker P.; Le Bohec C.; Bonadonna F.; Wienecke B.; Pistorius P.; Steinfurth A.; Burridge C.P.; Dantas G.P.M.; Poulin E.; Simison E.B.; Henderson J.; Eizirik E.; Nery M.F.; Bowie R.C.K.
发表日期	2020
ISSN	0027-8424
起始页码	22303
结束页码	22310
卷号	117 期号:36
英文摘要	Penguins are the only extant family of flightless diving birds. They currently comprise at least 18 species, distributed from polar to tropical environments in the Southern Hemisphere. The history of their diversification and adaptation to these diverse environments remains controversial. We used 22 new genomes from 18 penguin species to reconstruct the order, timing, and location of their diversification, to track changes in their thermal niches through time, and to test for associated adaptation across the genome. Our results indicate that the penguin crown-group originated during the Miocene in New Zealand and Australia, not in Antarctica as previously thought, and that Aptenodytes is the sister group to all other extant penguin species. We show that lineage diversification in penguins was largely driven by changing climatic conditions and by the opening of the Drake Passage and associated intensification of the Antarctic Circumpolar Current (ACC). Penguin species have introgressed throughout much of their evolutionary history, following the direction of the ACC, which might have promoted dispersal and admixture. Changes in thermal niches were accompanied by adaptations in genes that govern thermoregulation and oxygen metabolism. Estimates of ancestral effective population sizes (Ne) confirm that penguins are sensitive to climate shifts, as represented by three different demographic trajectories in deeper time, themost common (in 11 of 18 penguin species) being an increased Nebetween 40 and 70 kya, followed by a precipitous decline during the Last Glacial Maximum. The latter effect is most likely a consequence of the overall decline in marine productivity following the last glaciation. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Ancestral distribution; Ancestral niche; Antarctica; Genome; Penguin
语种	英语
scopus关键词	oxygen; adaptation; Article; Australia; evolution; genome analysis; genome-wide association study; glaciation; introgression; metabolism; New Zealand; nonhuman; penguin; phylogeny; population size; priority journal; species diversity; thermoregulation; animal; Antarctica; classification; climate change; ecosystem; genetic selection; genetics; genome; genome-wide association study; molecular evolution; physiology; Animals; Antarctic Regions; Australia; Climate Change; Ecosystem; Evolution, Molecular; Genome; Genome-Wide Association Study; New Zealand; Phylogeny; Selection, Genetic; Spheniscidae
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/158844
作者单位	Vianna, J.A., Departamento de Ecosistemas y Medio Ambiente, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Santiago, 782-0436, Chile; Fernandes, F.A.N., Departamento de Genética, Evolução, Microbiologia e Imunologia, Universidade Estadual de Campinas, Sao Paulo, 13083-970, Brazil; Frugone, M.J., Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Santiago, 7800003, Chile; Figueiró, H.V., Pontifícia Universidade Católica Do Rio Grande Do sul, Escola de Ciências da Saúde e da Vida, Porto Alegre, RS, 90619-900, Brazil, Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA 22630, United States; Pertierra, L.R., Museo Nacional de Ciencias Naturales, Departamento de Ecología Evolutiva, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, 28006, Spain; Noll, D., Departamento de Ecosistemas y Medio Ambiente, Facultad de Agronomía e Ing...
推荐引用方式 GB/T 7714	Vianna J.A.,Fernandes F.A.N.,Frugone M.J.,et al. Genome-wide analyses reveal drivers of penguin diversification[J],2020,117(36).
APA	Vianna J.A..,Fernandes F.A.N..,Frugone M.J..,Figueiró H.V..,Pertierra L.R..,...&Bowie R.C.K..(2020).Genome-wide analyses reveal drivers of penguin diversification.Proceedings of the National Academy of Sciences of the United States of America,117(36).
MLA	Vianna J.A.,et al."Genome-wide analyses reveal drivers of penguin diversification".Proceedings of the National Academy of Sciences of the United States of America 117.36(2020).