DOI: 10.1016/j.tree.2017.06.002
论文题名: Sexual Conflict, Facultative Asexuality, and the True Paradox of Sex
作者: Burke N.W. ; Bonduriansky R.
刊名: Trends in Ecology and Evolution
ISSN: 1695347
出版年: 2017
卷: 32, 期: 9 起始页码: 646
结束页码: 652
语种: 英语
英文关键词: Bateman gradients
; facultative parthenogenesis
; paradox of sex
; sexual conflict
Scopus关键词: Animalia
英文摘要: Theory suggests that occasional or conditional sex involving facultative switching between sexual and asexual reproduction is the optimal reproductive strategy. Therefore, the true ‘paradox of sex’ is the prevalence of obligate sex. This points to the existence of powerful, general impediments to the invasion of obligately sexual populations by facultative mutants, and recent studies raise the intriguing possibility that a key impediment could be sexual conflict. Using Bateman gradients we show that facultative asexuality can amplify sexual conflict over mating, generating strong selection for both female resistance and male coercion. We hypothesize that invasions are most likely to succeed when mutants have negative Bateman gradients, can avoid mating, and achieve high fecundity through asexual reproduction – a combination unlikely to occur in natural populations. The rarity of facultative asexuality in animals is the true paradox of sex. Factors that impede facultative mutant invasions could be key to this paradox. Bateman gradients can affect the invasive potential of facultative mutants. Obligate sex might persist because sexual conflict limits mutants’ fitness. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66894
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Evolution and Ecology Research Centre, School of Biological, Earth, and Environmental Sciences, University of New South Wales Sydney, Sydney, Australia
Recommended Citation:
Burke N.W.,Bonduriansky R.. Sexual Conflict, Facultative Asexuality, and the True Paradox of Sex[J]. Trends in Ecology and Evolution,2017-01-01,32(9)