气候变化领域集成服务门户(CCPortal): Resource diversity promotes among-individual diet variation, but not genomic diversity, in lake stickleback

CCPortal

DOI	10.1111/ele.13448
	Resource diversity promotes among-individual diet variation, but not genomic diversity, in lake stickleback
	Bolnick D.I.; Ballare K.M.
发表日期	2020
ISSN	1461023X
卷号	23 期号:3
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
英文关键词	adaptive radiation; diversification; effective population size; Gasterosteus aculeatus; individual specialisation; intraspecific variation; niche variation
语种	英语
scopus关键词	Gasterosteus; Gasterosteus aculeatus; Invertebrata; animal; diet; genetic variation; genomics; invertebrate; lake; Smegmamorpha; Animals; Diet; Genetic Variation; Genomics; Invertebrates; Lakes; Smegmamorpha
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120925
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
推荐引用方式 GB/T 7714	Bolnick D.I.,Ballare K.M.. Resource diversity promotes among-individual diet variation, but not genomic diversity, in lake stickleback[J],2020,23(3).
APA	Bolnick D.I.,&Ballare K.M..(2020).Resource diversity promotes among-individual diet variation, but not genomic diversity, in lake stickleback.Ecology Letters,23(3).
MLA	Bolnick D.I.,et al."Resource diversity promotes among-individual diet variation, but not genomic diversity, in lake stickleback".Ecology Letters 23.3(2020).