Environmental heterogeneity influences the reliability of secondary sexual traits as condition indicators
نویسندگان
چکیده
منابع مشابه
Environmental heterogeneity, genotype-by-environment interactions and the reliability of sexual traits as indicators of mate quality.
Exaggerated sexual displays are often supposed to indicate the indirect benefits females may receive from sexual reproduction with displaying males, but empirical evidence for positive relationships between the genetic quality and sexual trait quality is scant. The explanation for this might lie in the fact that mixing of reproductive individuals whose development has been influenced by genotyp...
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In any population in which resources are limiting, the allocation of resources toward increased reproductive success may generate costs to survival [1-8]. The relationship between a sexually selected trait and fitness will therefore represent a balance between its relative associations with fecundity versus viability [3, 6, 7]. Because the risk of mortality in a population is likely to be heavi...
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Genetic and Environmental Influences on Sexual Orientation
The primary focus of this chapter is to provide an overview of the evidence to date on the quantitative genetics of sexual orientation, including family and twin studies. The bulk of the available evidence suggests moderate heritability for male sexual orientation. Female sexual orientation has been studied much less extensively, but current studies are consistent with a genetic contribution fo...
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Consequences of Economic Growth Fund. We are grateful to our colleagues Hua Wang and C.H. Zhang for their assistance in developing the data base for this study. Thanks also to Tom Tietenberg, Gunnar Eskeland and Mainul Huq for many useful comments.
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2011
ISSN: 1010-061X
DOI: 10.1111/j.1420-9101.2011.02399.x