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Cited by 9,510

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Parental Investment and Sexual Selection

·2017·Sexual Selection and the Descent of Man
DOI 10.4324/9781315129266-7
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Abstract

There is a tendency among biologists studying social behavior to regard the adult sex ratio as an independent variable to which the species reacts with appropriate adaptations. D. Lack often interprets social behavior as an adaptation in part to an unbalanced (or balanced) sex ratio, and J. Verner has summarized other instances of this tendency. The only mechanism that will generate differential mortality independent of sexual differences clearly related to parental investment and sexual selection is the chromosomal mechanism, applied especially to humans and other mammals: the unguarded X chromosome of the male is presumed to predispose him to higher mortality. Each offspring can be viewed as an investment independent of other offspring, increasing investment in one offspring tending to decrease investment in others. Species can be classified according to the relative parental investment of the sexes in their young. In the vast majority of species, the male&s;s only contribution to the survival of his offspring is his sex cells.

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  1. Bartholomew, G. A. 1970. A model for the evolution of pinniped polygyny. Evolution 24: 546–559. · DOI

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Metadata

Venue
Sexual Selection and the Descent of Man
Publisher
Routledge
Published
2017-07-12
Pages
136-179
DOI
10.4324/9781315129266-7
OpenAlex
W1490421035
Cited by
9,510
References
0
FWCI
476.84
Type
book chapter
Language
en
Open access
closed

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