Sex-specific dispersal in spatially varying environments leads to habitat-dependent evolutionary stable offspring sex ratios
نویسندگان
چکیده
منابع مشابه
Sex ratio dependent dispersal when sex ratios vary between patches.
Female biased sex ratios reduce competition between brothers when mating takes place within local patches. Male dispersal prior to mating is another strategy that reduces competition between brothers. One may thus expect these two traits to co-evolve and this is partially met in that sex ratios becomes less female biased as dispersal increases. However, the evolutionary stable degree of dispers...
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Sex-biased dispersal occurs in all seed plants and many animal species. Theoretical models have shown that sex-biased dispersal can lead to evolutionarily stable biased sex ratios. Here, we use a spatially explicit chessboard model to simulate the evolution of sex ratio in response to sex-biased dispersal range and sex-biased dispersal rate. Two life cycles are represented in the model: one in ...
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I would like to respond to the comments of Jongbloet et al. (1) on the data of Mocarelli et al. (2). Mocarelli et al. (2) reported on the offspring sex ratios (proportions male) following the explosion at Seveso, Italy, that released 2,3,7,8-tetrachlorodibenzo-pdioxin (TCDD, dioxin) into the environment. Mocarelli et al. (2) categorized matings into the four possible combinations by sex and exp...
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We consider the evolution of dispersal in an environment that varies spatially but that is constant in time. We allow an age structure with dispersal possible in all life-stages. We suppose that demes are large enough that kin effects can be ignored. It has previously been shown that costfree dispersal can persist over evolutionary time. However, several studies have shown that costly dispersal...
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Frequency-dependent selection should drive dioecious populations toward a 1:1 sex ratio, but biased sex ratios are widespread, especially among plants with sex chromosomes. Here, we develop population genetic models to investigate the relationships between evolutionarily stable sex ratios, haploid selection, and deleterious mutation load. We confirm that when haploid selection acts only on the ...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2000
ISSN: 1465-7279,1045-2249
DOI: 10.1093/beheco/11.4.421