Document Detail

Nest sanitation behavior in hirundines as a pre-adaptation to egg rejection to counter brood parasitism.
MedLine Citation:
PMID:  25231538     Owner:  NLM     Status:  Publisher    
Previous studies suggested that nest sanitation behavior may have been a pre-adaptation from which egg rejection of brood parasite eggs evolved. We tested this hypothesis in two swallow species, the red-rumped swallow (Cecropis daurica) and the barn swallow (Hirundo rustica). Our results indicated that the red-rumped swallow, which is an accepter of foreign eggs, rejected a low percentage of non-egg-shaped objects and did so less often than the barn swallow, which is an intermediate rejecter of foreign eggs. Furthermore, the egg rejection rates of the barn swallow increased with the increase in rejection rates of non-egg-shaped objects among different populations. These results showed that nest cleaning behavior could have evolved into a means of reducing the costs of brood parasitism, suggesting that egg recognition ability has evolved from recognition of non-egg-shaped objects. This finding advances our understanding of the evolution of egg recognition behavior in birds.
Canchao Yang; Longwu Wang; Wei Liang; Anders Pape Møller
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-18
Journal Detail:
Title:  Animal cognition     Volume:  -     ISSN:  1435-9456     ISO Abbreviation:  Anim Cogn     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9814573     Medline TA:  Anim Cogn     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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