气候变化领域集成服务门户(CCPortal): Offspring polymorphism and bet hedging: a large-scale, phylogenetic analysis

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DOI	10.1111/ele.13522
	Offspring polymorphism and bet hedging: a large-scale, phylogenetic analysis
	Scholl J.P.; Calle L.; Miller N.; Venable D.L.
发表日期	2020
ISSN	1461023X
起始页码	1223
结束页码	1231
卷号	23 期号:8
英文摘要	Offspring polymorphism is a reproductive strategy where individual organisms simultaneously produce offspring that differ in morphology and ecology. It occurs across the Tree of Life but is particularly common among plants, where it is termed seed (diaspore) heteromorphism. The prevalence of this strategy in unpredictably varying environments has resulted in the assumption that it serves as a bet-hedging mechanism. We found 101 examples of this strategy in southwestern North America. We provide phylogenetically informed evidence for the hypothesis that the occurrence of seed heteromorphism increases with increasing environmental variability, though this pattern was only significant for aridity, one of our two rainfall variability metrics. We provide a strong test of bet hedging for a large, taxonomically diverse set of seed heteromorphic species, lending support to the hypothesis that bet hedging is an important mechanistic driver for the evolution of seed heteromorphism. © 2020 John Wiley & Sons Ltd/CNRS
关键词	Bet hedging life history evolution offspring polymorphism reproductive biology seed heteromorphism
英文关键词	ecology; evolution; genetic polymorphism; phylogeny; reproduction; Biological Evolution; Ecology; Phylogeny; Polymorphism, Genetic; Reproduction
语种	英语
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/204288
作者单位	Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, United States; Department of Forest Management, University of Montana, Missoula, MT 59802, United States; The Nature Conservancy, Tucson, AZ 85719, United States
推荐引用方式 GB/T 7714	Scholl J.P.,Calle L.,Miller N.,et al. Offspring polymorphism and bet hedging: a large-scale, phylogenetic analysis[J],2020,23(8).
APA	Scholl J.P.,Calle L.,Miller N.,&Venable D.L..(2020).Offspring polymorphism and bet hedging: a large-scale, phylogenetic analysis.Ecology Letters,23(8).
MLA	Scholl J.P.,et al."Offspring polymorphism and bet hedging: a large-scale, phylogenetic analysis".Ecology Letters 23.8(2020).