Document Detail


Female preferences for aposematic signal components in a polymorphic poison frog.
MedLine Citation:
PMID:  18616568     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Aposematic signals may be subject to conflicting selective pressures from predators and conspecifics. We studied female preferences for different components of aposematic coloration in the polymorphic poison frog Oophaga pumilio across several phenotypically distinct populations. This frog shows striking diversity in color and pattern between geographically isolated populations in western Panama. Results indicate that male dorsal color is the most important determiner of female preferences. We did not find consistent evidence for effects of other signal components, such as spotting pattern or ventral color. Females in two populations showed assortative preferences mediated by male dorsal coloration. In a third population we found incomplete color-assortative preference behavior, with females exhibiting strong discrimination toward one novel color but not another. These results hint at a possible interaction between sexual and natural selection: female tolerance of unfamiliar coloration patterns could facilitate the establishment of novel phenotypes that are favored by other selective pressures (e.g., predator biases). Furthermore, our study suggests that specific components of the aposematic signal (i.e., dorsal color, ventral color, and spotting pattern) are affected differently by natural and sexual selection.
Authors:
Martine E Maan; Molly E Cummings
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-07-04
Journal Detail:
Title:  Evolution; international journal of organic evolution     Volume:  62     ISSN:  0014-3820     ISO Abbreviation:  Evolution     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-09-24     Completed Date:  2008-11-06     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0373224     Medline TA:  Evolution     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2334-45     Citation Subset:  IM    
Affiliation:
University of Texas at Austin, Integrative Biology, 1 University Station C0930, Austin Texas 78712, USA. m.maan@mail.utexas.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Anura / genetics*
Color
Costa Rica
Female
Geography
Male
Mating Preference, Animal*
Selection, Genetic*
Sex Characteristics
Skin Pigmentation*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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