气候变化领域集成服务门户(CCPortal): Ecological adaptation in European eels is based on phenotypic plasticity

CCPortal

DOI	10.1073/pnas.2022620118
	Ecological adaptation in European eels is based on phenotypic plasticity
	Enbody E.D.; Pettersson M.E.; Sprehn C.G.; Palm S.; Wickström H.; Andersson L.
发表日期	2021
ISSN	00278424
卷号	118 期号:4
英文摘要	The relative role of genetic adaptation and phenotypic plasticity is of fundamental importance in evolutionary ecology [M. J. West-Eberhard, Proc. Natl. Acad. Sci. U.S.A. 102 (suppl. 1), 6543–6549 (2005)]. European eels have a complex life cycle, including transitions between life stages across ecological conditions in the Sargasso Sea, where spawning occurs, and those in brackish and freshwater bodies from northern Europe to northern Africa. Whether continental eel populations consist of locally adapted and genetically distinct populations or comprise a single panmictic population has received conflicting support. Here we use whole-genome sequencing and show that European eels belong to one panmictic population. A complete lack of geographical genetic differentiation is demonstrated. We postulate that this is possible because the most critical life stages—spawning and embryonic development—take place under near-identical conditions in the Sargasso Sea. We further show that within-generation selection, which has recently been proposed as a mechanism for genetic adaptation in eels, can only marginally change allele frequencies between cohorts of eels from different geographic regions. Our results strongly indicate plasticity as the predominant mechanism for how eels respond to diverse environmental conditions during postlarval stages, ultimately solving a long-standing question for a classically enigmatic species. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Adaptation; Genome biology; Panmixia; Plasticity
语种	英语
scopus关键词	Anguilla anguilla; article; embryo development; evolutionary adaptation; gene frequency; genetic variability; nonhuman; phenotypic plasticity; Sargasso Sea; spawning; whole genome sequencing
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/180847
作者单位	Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, 751 23, Sweden; Department of Aquatic Resources, Institute of Freshwater Research, Swedish University of Agricultural Sciences, Drottningholm, 178 93, Sweden; Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, United States; Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, 750 07, Sweden
推荐引用方式 GB/T 7714	Enbody E.D.,Pettersson M.E.,Sprehn C.G.,et al. Ecological adaptation in European eels is based on phenotypic plasticity[J],2021,118(4).
APA	Enbody E.D.,Pettersson M.E.,Sprehn C.G.,Palm S.,Wickström H.,&Andersson L..(2021).Ecological adaptation in European eels is based on phenotypic plasticity.Proceedings of the National Academy of Sciences of the United States of America,118(4).
MLA	Enbody E.D.,et al."Ecological adaptation in European eels is based on phenotypic plasticity".Proceedings of the National Academy of Sciences of the United States of America 118.4(2021).