Sexual Differences in Reproductive Effort of Richardson's Ground Squirrels
نویسندگان
چکیده
منابع مشابه
Reproductive Effort in Squirrels: Ecological, Phylogenetic, Allometric, and Latitudinal Patterns
The distinctive features of reproduction in squirrels are the lack of allometric influences on the duration of reproductive investment; the strong allometric influences on offspring mass; and a trade-off between number and size of young, suggesting an important developmental component to reproduction. Lengths of gestation and lactation do not vary with body size but neonatal and weaning mass do...
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Sexually selected ornaments are among the most spectacular traits in nature. Indeed, the extreme costs associated with producing sexual traits seem to play a crucial role in their evolution by enforcing honest levels of advertisement: only males with high levels of acquired resources (or high ‘condition’, as it is known in the literature) can afford to produce extravagant signals, a phenomenon ...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 1998
ISSN: 1545-1542,0022-2372
DOI: 10.2307/1382838