Document Detail

Opposite differential allocation by males and females of the same species.
MedLine Citation:
PMID:  23193045     Owner:  NLM     Status:  MEDLINE    
Differential allocation (DA)-the adjustment of an individual's parental investment in relation to its mate's attractiveness-is increasingly recognized as an important component of sexual selection. However, although DA is expected by both sexes of parents in species with biparental care, DA by males has rarely been investigated. We have previously demonstrated a decrease in the feeding rates of female blue tits Cyanistes caeruleus when their mate's UV coloration was experimentally reduced (i.e. positive DA). In this study, we used the same experimental protocol in the same population to investigate DA by male blue tits in relation to their female's UV coloration. Males mated to UV-reduced females had higher feeding rates than those mated to control females (i.e. negative DA). Thus, male and female blue tits display opposite DA for the same component of parental effort (chick provisioning), the first time that this has been reported for any species.
Tobias Limbourg; A Christa Mateman; C M Lessells
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Biology letters     Volume:  9     ISSN:  1744-957X     ISO Abbreviation:  Biol. Lett.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2012-11-29     Completed Date:  2013-05-09     Revised Date:  2014-02-25    
Medline Journal Info:
Nlm Unique ID:  101247722     Medline TA:  Biol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  20120835     Citation Subset:  IM    
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MeSH Terms
Feeding Behavior*
Mating Preference, Animal
Sex Characteristics
Sex Factors
Songbirds / physiology*
Ultraviolet Rays
Visual Perception

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

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