气候变化领域集成服务门户(CCPortal): Geography is more important than life history in the recent diversification of the tiger salamander complex

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DOI	10.1073/pnas.2014719118
	Geography is more important than life history in the recent diversification of the tiger salamander complex
	Everson K.M.; Gray L.N.; Jones A.G.; Lawrence N.M.; Foley M.E.; Sovacool K.L.; Kratovil J.D.; Hotaling S.; Hime P.M.; Storfer A.; Parra-Olea G.; Percino-Daniel R.; Aguilar-Miguel X.; O’Neill E.M.; Zambrano L.; Bradley Shaffer H.; Weisrock D.W.
发表日期	2021
ISSN	00278424
卷号	118 期号:17
英文摘要	The North American tiger salamander species complex, including its best-known species, the Mexican axolotl, has long been a source of biological fascination. The complex exhibits a wide range of variation in developmental life history strategies, including populations and individuals that undergo metamorphosis; those able to forego metamorphosis and retain a larval, aquatic lifestyle (i.e., paedomorphosis); and those that do both. The evolution of a paedomorphic life history state is thought to lead to increased population genetic differentiation and ultimately reproductive isolation and speciation, but the degree to which it has shaped population- and species-level divergence is poorly understood. Using a large multilocus dataset from hundreds of samples across North America, we identified genetic clusters across the geographic range of the tiger salamander complex. These clusters often contain a mixture of paedomorphic and metamorphic taxa, indicating that geographic isolation has played a larger role in lineage divergence than paedomorphosis in this system. This conclusion is bolstered by geography-informed analyses indicating no effect of life history strategy on population genetic differentiation and by model-based population genetic analyses demonstrating gene flow between adjacent metamorphic and paedomorphic populations. This fine-scale genetic perspective on life history variation establishes a framework for understanding how plasticity, local adaptation, and gene flow contribute to lineage divergence. Many members of the tiger salamander complex are endangered, and the Mexican axolotl is an important model system in regenerative and biomedical research. Our results chart a course for more informed use of these taxa in experimental, ecological, and conservation research. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Ambystoma; Life history; Phylogenetics; Population genomics; Salamanders
语种	英语
scopus关键词	Ambystoma; article; controlled study; gene flow; genetic analysis; genetic variability; geography; life history; local adaptation; medical research; nonhuman; North America; phylogeny; population genomics; tiger
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/179709
作者单位	Department of Biology, University of Kentucky, Lexington, KY 40506, United States; Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, United States; Ecology and Evolutionary Biology Department, University of Connecticut, Storrs, CT 06269, United States; School of Biological Sciences, Washington State University, Pullman, WA 99164, United States; Biodiversity Institute, University of Kansas, Lawrence, KS 66045, United States; Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad de México, 04510, Mexico; Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad de México, 04510, Mexico; Centro de Investigación en Recursos Bióticos, Facultad de Ciencias, Universidad Autónoma del Estado de México, Toluca, 50000, Mexico; Department of Ecology and Evolutionary Biology, La Kretz Center for California Conservation Science, University of California, Los Angeles, CA 9...
推荐引用方式 GB/T 7714	Everson K.M.,Gray L.N.,Jones A.G.,et al. Geography is more important than life history in the recent diversification of the tiger salamander complex[J],2021,118(17).
APA	Everson K.M..,Gray L.N..,Jones A.G..,Lawrence N.M..,Foley M.E..,...&Weisrock D.W..(2021).Geography is more important than life history in the recent diversification of the tiger salamander complex.Proceedings of the National Academy of Sciences of the United States of America,118(17).
MLA	Everson K.M.,et al."Geography is more important than life history in the recent diversification of the tiger salamander complex".Proceedings of the National Academy of Sciences of the United States of America 118.17(2021).