Document Detail

Differential patterns of male and female mtDNA exchange across the Atlantic Ocean in the blue mussel, Mytilus edulis.
MedLine Citation:
PMID:  15612287     Owner:  NLM     Status:  MEDLINE    
Comparisons among loci with differing modes of inheritance can reveal unexpected aspects of population history. We employ a multilocus approach to ask whether two types of independently assorting mitochondrial DNAs (maternally and paternally inherited: F- and M-mtDNA) and a nuclear locus (ITS) yield concordant estimates of gene flow and population divergence. The blue mussel, Mytilus edulis, is distributed on both North American and European coastlines and these populations are separated by the waters of the Atlantic Ocean. Gene flow across the Atlantic Ocean differs among loci, with F-mtDNA and ITS showing an imprint of some genetic interchange and M-mtDNA showing no evidence for gene flow. Gene flow of F-mtDNA and ITS causes trans-Atlantic population divergence times to be greatly underestimated for these loci, although a single trans-Atlantic population divergence time (1.2 MYA) can be accommodated by considering all three loci in combination in a coalescent framework. The apparent lack of gene flow for M-mtDNA is not readily explained by different dispersal capacities of male and female mussels. A genetic barrier to M-mtDNA exchange between North American and European mussel populations is likely to explain the observed pattern, perhaps associated with the double uniparental system of mitochondrial DNA inheritance.
Cynthia Riginos; Michael J Hickerson; Christine M Henzler; Clifford W Cunningham
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Evolution; international journal of organic evolution     Volume:  58     ISSN:  0014-3820     ISO Abbreviation:  Evolution     Publication Date:  2004 Nov 
Date Detail:
Created Date:  2004-12-22     Completed Date:  2005-02-22     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0373224     Medline TA:  Evolution     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2438-51     Citation Subset:  IM    
Department of Biology, Box 90338, Duke University, Durham, North Carolina 27708, USA.
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MeSH Terms
Atlantic Ocean
Base Sequence
Bivalvia / genetics*
Cluster Analysis
DNA Primers
DNA, Mitochondrial / genetics
Evolution, Molecular*
Genetics, Population*
Models, Genetic
Molecular Sequence Data
Selection, Genetic*
Sequence Analysis, DNA
Sex Factors
Reg. No./Substance:
0/DNA Primers; 0/DNA, Mitochondrial

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

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