Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/46999
Title: Phylogeography of skinks (Chalcides) in the Canary Islands inferred from mitochondrial DNA sequences
Authors: Brown, R. P.
Pestano, J 
Keywords: Phylogenetic-Relationships
Microgeographic Variation
Ribosomal-Rna
Evolution
Lizards, et al
Issue Date: 1998
Publisher: 0962-1083
Journal: Molecular Ecology 
Abstract: Mitochondrial DNA (mtDNA) evolution was investigated in skinks of the genus Chalcides found in the Canary Islands (Ch. sexlineatus, Ch. viridanus and Ch. simonyi), together with some North African congenerics (Ch. polylepis and Ch. mionecton). Several sites were included within islands to cover areas of known within-island geographical variation in morphology. Skinks from the islands of EI Hierro and La Gomera appear to be sister taxa. The relationships between this clade and the Tenerife and Gran Canarian skinks were not fully resolved, although the best working hypothesis indicated monophyly with the former, with the latter forming a closely related outgroup. Ch. simonyi from Fuerteventura was more distantly related to the Western Canary Island skinks and did not show close relationships with the North African species Ch. mionecton and Ch. polylepis. Possible colonization sequences for the four most Western Canary Islands were considered. El Hierro appears to have been colonized relatively recently from La Gomera, commensurate with the recent origin of this island, while dispersal between La Gomera and Tenerife and between Gran Canaria and Tenerife or La Gomera appears to have taken place considerably earlier. Substantial within-island haplotype divergence was found in Gran Canaria and Tenerife. This may be a result of recent periods of intense volcanic activity found within these two islands. Lower levels of within-island differentiation are found in La Gomera and El Hierro and may be explained by lower levels of volcanic activity during recent geological history and a more recent colonization, respectively.
URI: http://hdl.handle.net/10553/46999
ISSN: 0962-1083
DOI: 10.1046/j.1365-294x.1998.00442.x
Source: Molecular Ecology[ISSN 0962-1083],v. 7 (9), p. 1183-1191
Appears in Collections:Artículos
Show full item record

SCOPUSTM   
Citations

78
checked on Aug 1, 2021

WEB OF SCIENCETM
Citations

74
checked on Aug 1, 2021

Page view(s)

20
checked on Jul 31, 2021

Google ScholarTM

Check

Altmetric


Share



Export metadata



Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.