气候变化领域集成服务门户(CCPortal): Changes in selection pressure can facilitate hybridization during biological invasion in a Cuban lizard

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DOI	10.1073/pnas.2108638118
	Changes in selection pressure can facilitate hybridization during biological invasion in a Cuban lizard
	Bock D.G.; Baeckens S.; Pita-Aquino J.N.; Chejanovski Z.A.; Michaelides S.N.; Muralidhar P.; Lapiedra O.; Park S.; Menke D.B.; Geneva A.J.; Losos J.B.; Kolbe J.J.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:42
英文摘要	Hybridization is among the evolutionary mechanisms most frequently hypothesized to drive the success of invasive species, in part because hybrids are common in invasive populations. One explanation for this pattern is that biological invasions coincide with a change in selection pressures that limit hybridization in the native range. To investigate this possibility, we studied the introduction of the brown anole (Anolis sagrei) in the southeastern United States. We find that native populations are highly genetically structured. In contrast, all invasive populations show evidence of hybridization among native-range lineages. Temporal sampling in the invasive range spanning 15 y showed that invasive genetic structure has stabilized, indicating that large-scale contemporary gene flow is limited among invasive populations and that hybrid ancestry is maintained. Additionally, our results are consistent with hybrid persistence in invasive populations resulting from changes in natural selection that occurred during invasion. Specifically, we identify a large-effect X chromosome locus associated with variation in limb length, a well-known adaptive trait in anoles, and show that this locus is often under selection in the native range, but rarely so in the invasive range. Moreover, we find that the effect size of alleles at this locus on limb length is much reduced in hybrids among divergent lineages, consistent with epistatic interactions. Thus, in the native range, epistasis manifested in hybrids can strengthen extrinsic postmating isolation. Together, our findings show how a change in natural selection can contribute to an increase in hybridization in invasive populations. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Anolis; Hybridization; Invasive species; Natural selection; Sex chromosome
语种	英语
scopus关键词	allele; Anolis; article; controlled study; effect size; epistasis; gene flow; gene structure; invasive species; limb; natural selection; nonhuman; species invasion; United States; X chromosome
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/238615
作者单位	Department of Biology, Washington University in St. Louis, St. Louis, MO 63130, United States; Functional Morphology Lab, Department of Biology, University of Antwerp, Wilrijk, B-2610, Belgium; Department of Biological Sciences, University of Rhode Island, Kingston, RI 02881, United States; Department of Biology, Concordia University, Montreal, QC H4B 1R6, Canada; Center for Population Biology, Department of Evolution and Ecology, University of California, Davis, CA 95616, United States; CREAF (Centre for Research on Ecology and Applied Forestry), Cerdanyola del Valles, Catalonia, 08193, Spain; Department of Genetics, University of Georgia, Athens, GA 30602, United States; Department of Biology, Center for Computational and Integrative Biology, Rutgers University, Camden, NJ 08102, United States; Living Earth Collaborative, Washington University in St. Louis, St. Louis, MO 63130, United States
推荐引用方式 GB/T 7714	Bock D.G.,Baeckens S.,Pita-Aquino J.N.,et al. Changes in selection pressure can facilitate hybridization during biological invasion in a Cuban lizard[J],2021,118(42).
APA	Bock D.G..,Baeckens S..,Pita-Aquino J.N..,Chejanovski Z.A..,Michaelides S.N..,...&Kolbe J.J..(2021).Changes in selection pressure can facilitate hybridization during biological invasion in a Cuban lizard.Proceedings of the National Academy of Sciences of the United States of America,118(42).
MLA	Bock D.G.,et al."Changes in selection pressure can facilitate hybridization during biological invasion in a Cuban lizard".Proceedings of the National Academy of Sciences of the United States of America 118.42(2021).