Document Detail


Population structure of long-finned pilot whales in the North Atlantic: a correlation with sea surface temperature?
MedLine Citation:
PMID:  10886657     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The long-finned pilot whale, Globicephala melas, is a social, pelagic odontocete distributed widely in the cold temperate waters of the North Atlantic. Despite genetic, morphometric, physiological and observational studies, it remains unclear whether any population substructure exists. We have used eight highly polymorphic microsatellite loci to analyse samples from four disparate sampling sites: USA East Coast (Cape Cod), West Greenland, the Faeroe Islands and the UK. Our results indicate that substructure does exist, and is particularly pronounced between West Greenland and other sites. The magnitudes of the various pairwise comparisons do not support a simple isolation-by-distance model. Instead, the patterns of genetic differentiation suggest that population isolation occurs between areas of the ocean which differ in sea surface temperature. Such a mechanism is supported by the observation that temperature is a primary factor determining the relative distributions of two short-finned pilot whale (G. macrorhynchus) populations off the Pacific coast of Japan.
Authors:
K J Fullard; G Early; M P Heide-Jorgensen; D Bloch; A Rosing-Asvid; W Amos
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Molecular ecology     Volume:  9     ISSN:  0962-1083     ISO Abbreviation:  Mol. Ecol.     Publication Date:  2000 Jul 
Date Detail:
Created Date:  2000-07-31     Completed Date:  2001-05-31     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9214478     Medline TA:  Mol Ecol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  949-58     Citation Subset:  IM    
Affiliation:
Department of Zoology, Cambridge University, Cambridge CB2 3EJ, UK. kjf23@hermes.cam.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Animals
Atlantic Ocean
Dolphins / genetics*
Genetic Variation
Genetics, Population*
Geography
Heterozygote
Linkage Disequilibrium
Microsatellite Repeats / genetics*
Polymorphism, Genetic
Seawater
Temperature*

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


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