Document Detail

Genetic Variation and Differentiation of Gekko gecko from Different Populations Based on Mitochondrial Cytochrome b Gene Sequences and Karyotypes.
MedLine Citation:
PMID:  22639809     Owner:  NLM     Status:  In-Data-Review    
Black-spotted and red-spotted tokay geckos are distributed in different regions and have significant differences in morphological appearance, but have been regarded as the same species, Gekko gecko, in taxonomy. To determine whether black-spotted and red-spotted tokay geckos are genetically differentiated, we sequenced the entire mitochondrial cytochrome b gene (1147 bp) from 110 individuals of Gekko gecko collected in 11 areas including Guangxi China, Yunnan China, Vietnam, and Laos. In addition, we performed karyotypic analyses of black-spotted tokay geckos from Guangxi China and red-spotted tokay geckos from Laos. These phylogenetic analyses showed that black-spotted and red-spotted tokay geckos are divided into two branches in molecular phylogenetic trees. The average genetic distances are as follows: 0.12-0.47% among six haplotypes in the black-spotted tokay gecko group, 0.12-1.66% among five haplotypes in the red-spotted tokay gecko group, and 8.76-9.18% between the black-spotted and red-spotted tokay geckos, respectively. The karyotypic analyses showed that the karyotype formula is 2n = 38 = 8m + 2sm + 2st + 26t in red-spotted tokay geckos from Laos compared with 2n = 38 = 8m + 2sm + 28t in black-spotted tokay geckos from Guangxi China. The differences in these two kinds of karyotypes were detected on the 15th chromosome. The clear differences in genetic levels between black-spotted and red-spotted tokay geckos suggest a significant level of genetic differentiation between the two.
Xin-Min Qin; Hui-Min Li; Zhen-Hua Zeng; De-Long Zeng; Qing-Xin Guan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Zoological science     Volume:  29     ISSN:  0289-0003     ISO Abbreviation:  Zool. Sci.     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-05-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8702287     Medline TA:  Zoolog Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  384-9     Citation Subset:  IM    
College of Life Science, Guangxi Normal University, Guilin, Guangxi 541004, China.
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