The perils of single gene trees - mitochondrial versus single-copy nuclear DNA variation in white-eyes (Aves: Zosteropidae)

Degnan, S. M. (1993) The perils of single gene trees - mitochondrial versus single-copy nuclear DNA variation in white-eyes (Aves: Zosteropidae). Molecular Ecology, 2 4: 219-225. doi:10.1111/j.1365-294X.1993.tb00011.x


Author Degnan, S. M.
Title The perils of single gene trees - mitochondrial versus single-copy nuclear DNA variation in white-eyes (Aves: Zosteropidae)
Journal name Molecular Ecology   Check publisher's open access policy
ISSN 0962-1083
1365-294X
Publication date 1993-08-01
Sub-type Article (original research)
DOI 10.1111/j.1365-294X.1993.tb00011.x
Volume 2
Issue 4
Start page 219
End page 225
Total pages 7
Place of publication Oxford
Publisher Blackwell Scientific
Language eng
Subject 060302 Biogeography and Phylogeography
060411 Population, Ecological and Evolutionary Genetics
Abstract Phylogenetic relationships among animal populations and species commonly have been inferred from patterns of variation observed within a single gene system, most often the mitochondrial genome. Analysis of restriction site variation in the mitochondrial DNA of two species of white-eye (Zosterops lateralis and Z. lutea) in Australia produced a single gene tree that does not accurately represent the organismal tree. In contrast, patterns of variation at two anonymous, single-copy nuclear DNA loci revealed a phylogeography consistent with traditional classification of the species. Discordance between mitochondrial DNA and single-copy nuclear DNA variation is probably the result of past hybridization between Z. lateralis and Z. lutea, evidence of which has been lost from the nuclear genome by recombination. This study provides a clear empirical demonstration that single gene genealogies cannot be assumed to accurately represent the true phylogenies, and emphasizes the need for composite genetic analyses.
Keyword evolutionary genetics
hybridization
mitochondrial DNA
molecular phylogeny
nuclear DNA
zosterops
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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