Sexual selection in genetic colour-polymorphic species: a review of experimental studies and perspectives

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State: Public
Version: author
Serval ID
serval:BIB_9F7834B13588
Type
Article: article from journal or magazin.
Publication sub-type
Review (review): journal as complete as possible of one specific subject, written based on exhaustive analyses from published work.
Collection
Publications
Institution
Title
Sexual selection in genetic colour-polymorphic species: a review of experimental studies and perspectives
Journal
Journal of Ethology
Author(s)
Roulin A., Bize P.
ISSN
0289-0771
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
25
Number
2
Pages
99-105
Language
english
Abstract
Sexual selection theory has primarily focussed on the role of mating preferences for the best individuals in the evolution of condition-dependent ornaments, traits that signal absolute quality. Because the most suitable mate for one individual is not always the best for others, however, we argue that non-directional mate choice can promote the evolution of alternative morphs that are not condition-dependent in their expression (i.e. genetic polymorphism). We list the different mate-choice rules (i.e. all individuals have the same preference; preference depends on the chooser's morph; individuals mate preferentially with conspecifics displaying an uncommon or the most frequent morph) and review experimental studies that investigated mate choice in natural populations of colour-polymorphic animals. Our review emphasises that although the experimental data support the idea that sexual selection plays an important role in the evolution of genetic colour polymorphism in many different ways, little is known about the adaptive value of each mate-choice strategy and about their implication in the evolutionary stability of colour polymorphism. One way of solving this problem is to determine the adaptive function of colour morphs, a worthwhile objective, because better understanding of mate-choice rules in polymorphic species should provide important insights into sexual-selection processes and, in turn, into the maintenance of genetic variation.
Keywords
alternative strategies, condition-dependence, genetic colour polymorphism, mate choice, polymorphism, sexual selection
Web of science
Create date
24/01/2008 17:42
Last modification date
20/08/2019 15:05
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