Document Detail


Geographic variation in the age of temperate-zone reptile and amphibian species: Southern Hemisphere species are older.
MedLine Citation:
PMID:  20659925     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Despite controversy over alternative definitions, the species is the fundamental operational unit of biodiversity, and species are the building-blocks of conservation. But is a 'species' from one part of the world the same as a 'species' from elsewhere? Our meta-analysis of molecular phylogenetic data reveals that reptile and amphibian species distributed in temperate-zone areas of the Northern Hemisphere are younger than taxa from the Southern Hemisphere, probably reflecting the greater impact of past climatic variation on Northern Hemisphere habitats. Because a species' age may influence its vulnerability to anthropogenic threats, geographical variation in species ages should be incorporated into conservation planning.
Authors:
Sylvain Dubey; Richard Shine
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-07-21
Journal Detail:
Title:  Biology letters     Volume:  7     ISSN:  1744-957X     ISO Abbreviation:  Biol. Lett.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-13     Completed Date:  2011-05-10     Revised Date:  2012-02-23    
Medline Journal Info:
Nlm Unique ID:  101247722     Medline TA:  Biol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  96-7     Citation Subset:  IM    
Affiliation:
School of Biological Sciences, University of Sydney, New South Wales 2006, Australia. sylvain.dubey@bio.usyd.edu.au
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MeSH Terms
Descriptor/Qualifier:
Amphibians / physiology*
Animals
Climate
Demography
Evolution, Molecular*
Reptiles / physiology*

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