Enigmatic reptilian sex ratios. If there is a linear relationship between the two variables, these outliers suggest that certain species groups may have a steeper slope. For example, a male-biased OSR means that there are more sexually competing males than sexually competing females.
The equivocal results were attributed to the influence of other factors on differential mortality of the sexes, possibly hunting concentrated on males. Cite Cite Jeffrey E.
JEL wrote the manuscript. A; et al. Namespaces Article Talk.
This is the sex whose fitness is subject to the most effective parental control. A review of techniques for quantifying sexual dimorphism. Whitfield Gibbons, Mickey Agha, Does the timing of attainment of maturity influence sexual size dimorphism and adult sex ratio in turtles?
Categories : Sexual female biased sex ratio definition in Lexington Ecology Mating systems Reproduction. Views Read Edit View history. In several groups of fish, such as wrassesparrotfish and clownfishdichogamy — or sequential hermaphoditism — is normal.
Ewert and his co-authors proposed a temperature-dependent differential fitness hypothesis as a possible explanation for the relationship they observed. Annual Review of Ecology, Evolution, and Systematics 28 : — Article Navigation. Wiley RH. The basis for this hypothesis, stated simply, is that the earlier-maturing sex remains smaller on average than the later-maturing sex.
Does the timing of attainment of maturity influence sexual size dimorphism and adult sex ratio in turtles?