What is the relative importance of sexual selection and ecological processes in the evolution of sexual size dimorphism in monogamous shorebirds?
نویسنده
چکیده
Sexual size dimorphism is widespread among animals; males are larger than females in most birds and mammals whereas the opposite is true among invertebrates, amphibians and reptiles (Andersson 1994, Fairbairn 1997). These taxonomic differences have influenced the terminology and prevailing hypotheses for dimorphism. Although sexual size dimorphism is often described as “normal-” or “reversed-” by ornithologists, a broader taxonomic perspective indicates that “male-biased” and “female-biased” dimorphism are more appropriate terms. Size dimorphism is often attributed to a selective pressure on one sex: sexual selection on males among male-biased species versus a fecundity-advantage of large female size in What is the relative importance of sexual selection and ecological processes in the evolution of sexual size dimorphism in monogamous shorebirds?
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