Document Detail


When continents collide: phylogeny, historical biogeography and systematics of the medically important viper genus Echis (Squamata: Serpentes: Viperidae).
MedLine Citation:
PMID:  19666129     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We analyze the phylogeny of the medically important and taxonomically unresolved viper genus Echis using four mitochondrial gene fragments. The results show that the populations of the genus fall into four main clades: the Echis carinatus, E. coloratus, E. ocellatus and E. pyramidum groups. The E. pyramidum and E. coloratus groups are sister taxa but the interrelationships of this clade and the E. ocellatus and E. carinatus groups are unresolved. The initial divergence of the genus appears to coincide with the collision between Afro-Arabia and Eurasia, and that between the E. coloratus and E. pyramidum clades appears to be associated with the opening of the Red Sea. Later land connections between Africa and Arabia may have contributed to shaping the distribution of the E. pyramidum complex. The present distribution of E. carinatus may be the result of range expansion from southern India. Taxonomically, our results provide molecular evidence for the validity of Echis omanensis, E. khosatzkii, E. borkini and E. jogeri, for the presence of unsuspected genetic diversity within the E. pyramidum complex in eastern Africa, and for the conspecificity of E. carinatus and E. multisquamatus. The status of E. leucogaster remains to be confirmed.
Authors:
Catharine E Pook; Ulrich Joger; Nikolaus St??mpel; Wolfgang W??ster
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-08-08
Journal Detail:
Title:  Molecular phylogenetics and evolution     Volume:  53     ISSN:  1095-9513     ISO Abbreviation:  Mol. Phylogenet. Evol.     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-12-01     Completed Date:  2010-01-25     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9304400     Medline TA:  Mol Phylogenet Evol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  792-807     Citation Subset:  IM    
Affiliation:
Bangor University, School of Biological Sciences, Environment Centre Wales, Brambell Building, Bangor LL57 2UW, UK.
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MeSH Terms
Descriptor/Qualifier:
Africa
Animals
Bayes Theorem
DNA, Mitochondrial / genetics
Evolution, Molecular*
Genes, Mitochondrial
Geography
Markov Chains
Middle East
Phylogeny*
Sequence Alignment
Sequence Analysis, DNA
Viperidae / classification,  genetics*
Chemical
Reg. No./Substance:
0/DNA, Mitochondrial

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


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