Correlated-response-to-selection experiments designed to test for a genetic correlation between female preferences and male traits yield biased results
Article Abstract:
It is unlikely that correlated-response (CR) methods for demonstrating the existence of a genetic correlation will provide accurate estimates of the genetic correlation between female preferences and male traits. Other methods, including half-sibling, full sibling and parent-offspring comparisons, can supply estimates of the genetic correlation. It can be argued that CR methods will overestimate the genetic correlation, and could even incorrectly identify a genetic correlation when none is actually present.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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Mate choice and competition for mates in the boat-tailed grackle
Article Abstract:
Behavioural studies show that mate choice and competition for mates are traits of natural selection, but the two mechanisms have not been studied interactively in a natural setting. A study of mate choice and competition for mates in the boat-tailed grackle is presented. Results show that indirect and direct mate choice can occur in the same species. It is shown that females choose mates which perform displays and which are more dominant. Details of the study are presented.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1997
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Song repertoires and sensory exploitation: reconsidering the case of the common grackle
Article Abstract:
Male common grackles sing only one type of song once but females prefer multiple songs. To analyze this sexual phenomenon, phylogenetic analysis was used. Results showed that the single-song condition of male grackles is the derived state and that the preference of females for multiple songs may only be a functional preference. However, the possibility that the females' multiple song preference may be ancestral has not been discounted.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
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