Document Detail


Condition dependence of iridescent wing flash-marks in two species of dabbling ducks.
MedLine Citation:
PMID:  20117191     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Growing empirical evidence supports the hypothesis of male mate choice for female ornaments which are thought to reflect individual quality and future breeding ability. While structural colors are clearly used in mate choice and pairing, the condition dependence of such traits is less obvious, particularly in females. We present spectral measurements of wing flash-marks in two species of dabbling ducks during the pairing period and evaluate color and brightness contrasts as seen through the mallard's (Anas platyrhynchos) visual system. We tested for possible relationships between body size (and condition) and feather measurements both on captive and wild individuals. By analyzing reflectance spectra of semi-captive mallards soon after the molting period, we found that brightness was condition related. Color contrast was positively related to body size, but only in females. In wild ducks, color contrast was positively related to body size in the common teal A. crecca only for females. These results suggest that female color traits are likely to be used by males for mate choice, and support the hypothesis that the structural color is condition-dependent. Finally, brightness contrast decreased over time in both duck species. Natural abrasion or the effect of keratinolytic bacteria could explain such pattern.
Authors:
Pierre Legagneux; Marc Th?ry; Matthieu Guillemain; Doris Gomez; Vincent Bretagnolle
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-02-01
Journal Detail:
Title:  Behavioural processes     Volume:  83     ISSN:  1872-8308     ISO Abbreviation:  Behav. Processes     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-03-08     Completed Date:  2010-06-07     Revised Date:  2010-06-16    
Medline Journal Info:
Nlm Unique ID:  7703854     Medline TA:  Behav Processes     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  324-30     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 Elsevier B.V. All rights reserved.
Affiliation:
Centre d'Etudes Biologiques de Chiz?, CNRS UPR 1934 Villiers-en-Bois, Beauvoir sur Niort, France. legagneux@gmail.com
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MeSH Terms
Descriptor/Qualifier:
Analysis of Variance
Animals
Beak / anatomy & histology
Body Size
Color
Ducks* / anatomy & histology
Feathers / anatomy & histology
Female
Linear Models
Male
Mating Preference, Animal*
Pigmentation*
Principal Component Analysis
Sex Characteristics
Species Specificity
Ultraviolet Rays
Visual Perception*
Wing* / anatomy & histology

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


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