Document Detail

Geographic variation of multiple paternity in the American lobster, Homarus americanus.
MedLine Citation:
PMID:  15813789     Owner:  NLM     Status:  MEDLINE    
We studied the frequency of multiple paternity for American lobster (Homarus americanus) at three Canadian sites differing in exploitation rate and mean adult size. The probability of detecting multiple paternity using four microsatellite loci and 100 eggs per female was in excess of 99% under various scenarios of paternal contribution. Overall, 13% of the 108 examined females carried a clutch sired by two or three males. Multiple paternity was observed at the two most exploited sites (11% at Magdalen Islands and 28% at Grand Manan Island), whereas single paternity only was observed at the least exploited site (Anticosti Island). Within populations females with a clutch sired by more than one male tended to be smaller than females with a clutch sired by a single male. Based on these and other findings, we postulate a link between female promiscuity and sperm limitation in the American lobster.
Thierry Gosselin; Bernard Sainte-Marie; Louis Bernatchez
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Molecular ecology     Volume:  14     ISSN:  0962-1083     ISO Abbreviation:  Mol. Ecol.     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-04-07     Completed Date:  2005-05-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9214478     Medline TA:  Mol Ecol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1517-25     Citation Subset:  IM    
Québec-Océan, Département de Biologie, Université Laval, Québec, QC, G1K ZP4, Canada.
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MeSH Terms
Body Size
Genetics, Population*
Microsatellite Repeats / genetics
Nephropidae / genetics*,  physiology
Sexual Behavior, Animal / physiology*

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

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