DOI: 10.1111/ele.13448
论文题名: Resource diversity promotes among-individual diet variation, but not genomic diversity, in lake stickleback
作者: Bolnick D.I. ; Ballare K.M.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期: 3 起始页码: 495
结束页码: 505
语种: 英语
中文关键词: adaptive radiation
; diversification
; effective population size
; Gasterosteus aculeatus
; individual specialisation
; intraspecific variation
; niche variation
英文关键词: Gasterosteus
; Gasterosteus aculeatus
; Invertebrata
; animal
; diet
; genetic variation
; genomics
; invertebrate
; lake
; Smegmamorpha
; Animals
; Diet
; Genetic Variation
; Genomics
; Invertebrates
; Lakes
; Smegmamorpha
英文摘要: Many generalist species consist of specialised individuals that use different resources. This within-population niche variation can stabilise population and community dynamics. Consequently, ecologists wish to identify environmental settings that promote such variation. Theory predicts that environments with greater resource diversity favour ecological diversity among consumers (via disruptive selection or plasticity). Alternatively, niche variation might be a side-effect of neutral genomic diversity in larger populations. We tested these alternatives in a metapopulation of threespine stickleback. Stickleback consume benthic and limnetic invertebrates, focusing on the former in small lakes, the latter in large lakes. Intermediate-sized lakes support generalist stickleback populations using an even mixture of the two prey types, and exhibit greater among-individual variation in diet and morphology. In contrast, genomic diversity increases with lake size. Thus, phenotypic diversity and neutral genetic polymorphism are decoupled: trophic diversity being greatest in intermediate-sized lakes with high resource diversity, whereas neutral genetic diversity is greatest in the largest lakes. © 2020 John Wiley & Sons Ltd/CNRS Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166596
Appears in Collections: 气候变化与战略
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作者单位: Department of Integrative Biology, University of Texas at Austin, Austin, TX 78712, United States; Ecology and Evolutionary Biology, and Institute for System Genomics, University of Connecticut, Storrs, CT 06269, United States; Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, CA 95064, United States
Recommended Citation:
Bolnick D.I.,Ballare K.M.. Resource diversity promotes among-individual diet variation, but not genomic diversity, in lake stickleback[J]. Ecology Letters,2020-01-01,23(3)