Selection for Rapid Embryo Development Correlates with Embryo Exposure to Maternal Androgens among Passerine Birds
نویسندگان
چکیده
منابع مشابه
Selection for rapid embryo development correlates with embryo exposure to maternal androgens among passerine birds.
Greater offspring predation favors evolution of faster development among species. We hypothesized that greater offspring predation exerts selection on mothers to increase levels of anabolic androgens in egg yolks to achieve faster development. Here, we tested whether (1) concentrations of yolk androgens in passerine species were associated with offspring predation and (2) embryo and nestling de...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 2007
ISSN: 0003-0147,1537-5323
DOI: 10.1086/519397