La Saboteuse: A Unifying Theory of Sexual Dimorphism in Animals Based on Intra-Specific, Male-Female Competition
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CONTRIBUTORS:
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CONFERENCE NAME:
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CONF. LOCATION:
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McGill University, Montréal Canada
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CONFERENCE YEAR:
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1995
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PUB TYPE:
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Conference Presentation
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SUBJECT(S):
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Sexual Selection, Intersexual Selection, Intrasexual Selection, Male Combat, Female Preference
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DISCIPLINE:
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Ecology
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HTTP:
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LANGUAGE:
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English
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PUB ID:
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103-411-396
(Last edited on
2005/01/03 13:04:34 US/Mountain)
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SPONSOR(S):
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ABSTRACT:
Both male ornamentation and male combat result in increased male mortality. Because population sizes are limited by a carrying capacity, increased age-specific adult male mortality will result in decreased age-specific adult female mortality, as well as decreased juvenile mortality. As intersexual competition is one form of intraspecific competition, through choosing to mate with ornamented and/or combative males, females in polygamous systems reduce intraspecific competition. Because average male fitness must exactly equal average female fitness, male fitness will paradoxically rise with increasing male mortality. This theory also offers new perspectives on peripheral problems to sexual theory, such as mate location, resource guarding, leks, harems, and others.
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