Document Detail

Selection on sperm morphology under relaxed sperm competition in a wild passerine bird.
MedLine Citation:
PMID:  18986959     Owner:  NLM     Status:  MEDLINE    
Theories regarding the role of sexual selection on the evolution of sperm traits are based on an association between pre-copulatory (e.g. female preference) and post-copulatory (e.g. ejaculate quality) male reproductive traits. In tests of these hypotheses, sperm morphology has rarely been used, despite its high heritability and intra-individual consistency. We found evidence of selection for longer sperm through positive phenotypic associations between sperm size and the two major female preference traits in the pied flycatcher, Ficedula hypoleuca. Our results support the sexually selected sperm hypothesis in a species under low sperm competition and demonstrate that natural and pre-copulatory sexual selection forces should not be overlooked in studies of intraspecific sperm morphology evolution.
Sara Calhim; Helene M Lampe; Tore Slagsvold; Tim R Birkhead
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Biology letters     Volume:  5     ISSN:  1744-9561     ISO Abbreviation:  Biol. Lett.     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2009-01-19     Completed Date:  2009-03-31     Revised Date:  2013-06-04    
Medline Journal Info:
Nlm Unique ID:  101247722     Medline TA:  Biol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  58-61     Citation Subset:  IM    
Department of Animal & Plant Sciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.
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MeSH Terms
Mating Preference, Animal
Passeriformes / anatomy & histology,  genetics*,  physiology
Selection, Genetic*
Spermatozoa / cytology*

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