Journal ArticleDOI
Dispersal and the sex ratio
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It is shown that a female-biased sex ratio was expected in a model in which mating occurred within small local subgroups before population-wide dispersal of mated females.Abstract:
It has been shown by Fisher that a 1:1 sex ratio should be evolutionary stable as there would otherwise be a frequency-dependent advantage to the rarer sex1. Hamilton pointed out that Fisher's argument depends on the assumption of population-wide random mating, and showed that a female-biased sex ratio was expected in a model in which mating occurred within small local subgroups before population-wide dispersal of mated females. We consider here the sex ratio under some other models of dispersal in a geographically structured population.read more
Citations
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Journal ArticleDOI
Sex Ratio Variation in Mammals
Tim H. Clutton-Brock,G R Iason +1 more
TL;DR: Valid evidence that sex ratio trends are adaptive must be based on the overall distribution of trends or on cases in which the sex ratio can be shown to vary with the relative fitness of producing sons and daughters.
BookDOI
Ecology and evolution of cooperative breeding in birds
TL;DR: This book presents a meta-anatomy of sexual selection in birds and mammals, focusing on the role of courtship and courtship strategies in the courtship of birds and mammal species.
Journal ArticleDOI
Local Competition, Inbreeding, and the Evolution of Sex‐Biased Dispersal
TL;DR: A kin‐selection model is developed to investigate the consequences of local competition and inbreeding depression on the evolution of natal dispersal and meets empirical patterns in mammals: polygynous/promiscuous species usually display a male‐biased dispersal, while both sexes disperse in monogamous species.
Journal ArticleDOI
Sex Allocation Theory for Birds and Mammals
TL;DR: Since Fisher presented his explanation, many examples of biased sex ratios have been observed in nature, and the explanations put forth provided new dimensions to Fisher's central theory rather than direct exceptions.
BookDOI
Evolution and function of heterostyly
TL;DR: A century of research on heterostylous plants has passed since the publication of Charles Darwin's book "The Different Forms of Flowers on Plants of the Same Species" in 1877, and this book offers a detailed account of the subject.
References
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Book
The Evolution of Sex
TL;DR: In this paper, the authors compared the short-term advantages of sex and recombination in a finite population with the long-term consequences of recombination and sex and showed that recombination has shortterm advantages for both sexes.
Journal ArticleDOI
Evolution of sex
TL;DR: The Economy of Nature and the Evolution of Sex*.