| DOI: | 10.1111/ele.12544
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| Scopus记录号: | 2-s2.0-84955368338
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| 论文题名: | Male competition fitness landscapes predict both forward and reverse speciation |
| 作者: | Keagy J.; Lettieri L.; Boughman J.W.
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| 刊名: | Ecology Letters
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| ISSN: | 1461023X
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| EISSN: | 1461-0248
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| 出版年: | 2016
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| 卷: | 19, 期:1 | | 起始页码: | 71
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| 结束页码: | 80
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| 语种: | 英语
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| 英文关键词: | Fitness landscape
; Fitness peak
; Male competition
; Multivariate
; Reverse speciation
; Sexual selection
; Speciation
; Species collapse
; Stickleback
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| Scopus关键词: | anthropogenic effect
; competition (ecology)
; divergence
; fitness
; landscape ecology
; multivariate analysis
; phenotype
; sexual selection
; speciation (biology)
; teleost
; Gasterosteus
; Gasterosteus aculeatus
; animal
; competitive behavior
; genetics
; male
; phenotype
; physiology
; reproductive fitness
; sexual behavior
; Smegmamorpha
; species differentiation
; Animals
; Competitive Behavior
; Genetic Fitness
; Genetic Speciation
; Male
; Phenotype
; Sexual Behavior, Animal
; Smegmamorpha
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| 英文摘要: | Speciation is facilitated when selection generates a rugged fitness landscape such that populations occupy different peaks separated by valleys. Competition for food resources is a strong ecological force that can generate such divergent selection. However, it is unclear whether intrasexual competition over resources that provide mating opportunities can generate rugged fitness landscapes that foster speciation. Here we use highly variable male F2 hybrids of benthic and limnetic threespine sticklebacks, Gasterosteus aculeatus Linnaeus, 1758, to quantify the male competition fitness landscape. We find that disruptive sexual selection generates two fitness peaks corresponding closely to the male phenotypes of the two parental species, favouring divergence. Most surprisingly, an additional region of high fitness favours novel hybrid phenotypes that correspond to those observed in a recent case of reverse speciation after anthropogenic disturbance. Our results reveal that sexual selection through male competition plays an integral role in both forward and reverse speciation. © 2016 John Wiley & Sons Ltd/CNRS. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/107818
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Integrative Biology and BEACON Center for the Study of Evolution in Action, Michigan State University, East Lansing, MI, United States
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| Recommended Citation: | |
Keagy J.,Lettieri L.,Boughman J.W.. Male competition fitness landscapes predict both forward and reverse speciation[J]. Ecology Letters,2016-01-01,19(1)
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