globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12340
论文题名:
Bergmann's rule is maintained during a rapid range expansion in a damselfly
作者: Hassall C.; Keat S.; Thompson D.J.; Watts P.C.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期:2
起始页码: 475
结束页码: 482
语种: 英语
英文关键词: Bergmann's rule ; Microsatellite ; Odonata ; Phenotype ; Plasticity ; Range shift ; Zygoptera
Scopus关键词: Bergmann Rule ; body size ; damselfly ; gene flow ; genetic variation ; genotype-environment interaction ; phenotypic plasticity ; range expansion ; microsatellite DNA ; animal ; animal dispersal ; article ; Bergmann's rule ; body size ; climate change ; damselfly ; Europe ; gene flow ; genetics ; geography ; histology ; insect ; male ; microsatellite ; Odonata ; phenotype ; plasticity ; range shift ; Bergmann's rule ; microsatellite ; Odonata ; phenotype ; plasticity ; range shift ; Zygoptera ; Animal Distribution ; Animals ; Body Size ; Climate Change ; Europe ; Gene Flow ; Geography ; Insects ; Male ; Microsatellite Repeats ; Phenotype
英文摘要: Climate-induced range shifts result in the movement of a sample of genotypes from source populations to new regions. The phenotypic consequences of those shifts depend upon the sample characteristics of the dispersive genotypes, which may act to either constrain or promote phenotypic divergence, and the degree to which plasticity influences the genotype-environment interaction. We sampled populations of the damselfly Erythromma viridulum from northern Europe to quantify the phenotypic (latitude-body size relationship based on seven morphological traits) and genetic (variation at microsatellite loci) patterns that occur during a range expansion itself. We find a weak spatial genetic structure that is indicative of high gene flow during a rapid range expansion. Despite the potentially homogenizing effect of high gene flow, however, there is extensive phenotypic variation among samples along the invasion route that manifests as a strong, positive correlation between latitude and body size consistent with Bergmann's rule. This positive correlation cannot be explained by variation in the length of larval development (voltinism). While the adaptive significance of latitudinal variation in body size remains obscure, geographical patterns in body size in odonates are apparently underpinned by phenotypic plasticity and this permits a response to one or more environmental correlates of latitude during a range expansion. © 2013 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62010
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, Canada; Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool, L69 7ZB, United Kingdom; School of Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 3JT, United Kingdom

Recommended Citation:
Hassall C.,Keat S.,Thompson D.J.,et al. Bergmann's rule is maintained during a rapid range expansion in a damselfly[J]. Global Change Biology,2014-01-01,20(2)
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