Evolution by sexual selection: what can population comparisons tell us?
Article Abstract:
The joint evolution of female mating preferences and male sexual display are described by most of the sexual selection models, but Fisher's model includes an analysis of their genetic correlation. Other models suggest several different mechanisms for the evolution of mating preferences though it is difficult to determine their relative importance and experimentally differentiate them. The pattern of variation in independently evolving populations that have different stages in the sexual selection process is examined experimentally. The data obtained provides information on the nature and evolutionary dynamics of the sexual selection processes.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1993
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Formalizing Allee's ideas on dominance hierarchies: an intrademic selection model
Article Abstract:
W.C. Allee, in his work on animal social systems since the 1930s, concluded that dominance hierarchies help create animal groups which, due to hierarchy stability, can better compete for resources against other less stable groups. As Allee did not attempt to develop a model to describe the influence of dominance hierarchies, a model was developed in which factors for between-group selection and within-group selection are at play. The model shows that resource allocation rules, group size and patterns of group-formation promote the evolution of behavioral strategies that either increase or decrease stability in dominance hierarchies.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1995
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Sexual selection and imitation: females copy the mate choice of others
Article Abstract:
The extent to which females are affected by the preferences of other females in sexual selection was investigated in the Trinidadian guppy (Poecilia reticulata). An aquarium system was arranged so that a focal female was first allowed to observe a model female make a choice between two males, and then to make her own choice between the same two males. The results demonstrated that female copying plays a role in female guppy mate choice. It is therefore suggested that sexual selection models take into account the possible effects of female copying.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
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