DOI: 10.1111/ele.13522
论文题名: Offspring polymorphism and bet hedging: a large-scale, phylogenetic analysis
作者: Scholl J.P. ; Calle L. ; Miller N. ; Venable D.L.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期: 8 起始页码: 1223
结束页码: 1231
语种: 英语
中文关键词: 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
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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166714
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Scholl J.P.,Calle L.,Miller N.,et al. Offspring polymorphism and bet hedging: a large-scale, phylogenetic analysis[J]. Ecology Letters,2020-01-01,23(8)