Detecting non-binomial sex allocation when developmental mortality operates

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Detecting non-binomial sex allocation when developmental mortality operates.

Optimal sex allocation theory is one of the most intricately developed areas of evolutionary ecology. Under a range of conditions, particularly under population sub-division, selection favours sex being allocated to offspring non-randomly, generating non-binomial variances of offspring group sex ratios. Detecting non-binomial sex allocation is complicated by stochastic developmental mortality, ...

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The optimal deployment of reproductive resources by hermaphrodites to male versus female function (i.e., their sex allocation) depends directly on opportunities for mating. If hermaphrodites occur among females, selection should favor those with a male-biased allocation because increased male allocation enhances siring success when eggs are abundant. Similarly, when hermaphrodites co-occur with...

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Sex allocation

Sex allocation is the apportioning of parental resources to male versus female offspring in a sexually reproducing species. Sex allocation theory assumes that natural selection favours parents that modify their investment into male and female offspring in such a way that it maximizes the parent’s fitness (Fisher 1930; Charnov 1982). Fisher’s equal allocation theory (1930) states that selection ...

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ژورنال

عنوان ژورنال: Journal of Theoretical Biology

سال: 2016

ISSN: 0022-5193

DOI: 10.1016/j.jtbi.2016.08.008