气候变化领域集成服务门户(CCPortal): Ancestral genetic variation in phenotypic plasticity underlies rapid evolutionary changes in resurrected populations of waterfleas

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DOI	10.1073/pnas.2006581117
	Ancestral genetic variation in phenotypic plasticity underlies rapid evolutionary changes in resurrected populations of waterfleas
	Landy J.A.; Oschmann A.; Munch S.B.; Walsh M.R.
发表日期	2020
ISSN	0027-8424
起始页码	32535
结束页码	32544
卷号	117 期号:51
英文摘要	The role of phenotypic plasticity in adaptive evolution has been debated for decades. This is because the strength of natural selection is dependent on the direction and magnitude of phenotypic responses to environmental signals. Therefore, the connection between plasticity and adaptation will depend on the patterns of plasticity harbored by ancestral populations before a change in the environment. Yet few studies have directly assessed ancestral variation in plasticity and tracked phenotypic changes over time. Here we resurrected historic propagules of Daphnia spanning multiple species and lakes in Wisconsin following the invasion and proliferation of a novel predator (spiny waterflea, Bythotrephes longimanus). This approach revealed extensive genetic variation in predator-induced plasticity in ancestral populations of Daphnia. It is unlikely that the standing patterns of plasticity shielded Daphnia from selection to permit long-term coexistence with a novel predator. Instead, this variation in plasticity provided the raw materials for Bythotrephes-mediated selection to drive rapid shifts in Daphnia behavior and life history. Surprisingly, there was little evidence for the evolution of trait plasticity as genetic variation in plasticity was maintained in the face of a novel predator. Such results provide insight into the link between plasticity and adaptation and highlight the importance of quantifying genetic variation in plasticity when evaluating the drivers of evolutionary change in the wild. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Behavior; Bythotrephes; Life history evolution; Local adaptation; Species invasion
语种	英语
scopus关键词	article; cell proliferation; Daphnia; genetic variation; lake; life history; local adaptation; nonhuman; phenotypic plasticity; predator; propagule; quantitative analysis; species invasion; Wisconsin
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/160684
作者单位	Landy, J.A., Department of Biology, University of Texas at Arlington, Arlington, TX 76019, United States; Oschmann, A., Department of Biology, University of Texas at Arlington, Arlington, TX 76019, United States; Munch, S.B., Southwest Fisheries Science Center, National Marine Fisheries Service, Santa Cruz, CA 95060, United States; Walsh, M.R., Department of Biology, University of Texas at Arlington, Arlington, TX 76019, United States
推荐引用方式 GB/T 7714	Landy J.A.,Oschmann A.,Munch S.B.,et al. Ancestral genetic variation in phenotypic plasticity underlies rapid evolutionary changes in resurrected populations of waterfleas[J],2020,117(51).
APA	Landy J.A.,Oschmann A.,Munch S.B.,&Walsh M.R..(2020).Ancestral genetic variation in phenotypic plasticity underlies rapid evolutionary changes in resurrected populations of waterfleas.Proceedings of the National Academy of Sciences of the United States of America,117(51).
MLA	Landy J.A.,et al."Ancestral genetic variation in phenotypic plasticity underlies rapid evolutionary changes in resurrected populations of waterfleas".Proceedings of the National Academy of Sciences of the United States of America 117.51(2020).