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Potential gene flow in natural populations of the Drosophila ananassae species cluster inferred from a nuclear mitochondrial pseudogene.

Authors :
Sawamura K
Koganebuchi K
Sato H
Kamiya K
Matsuda M
Oguma Y
Source :
Molecular phylogenetics and evolution [Mol Phylogenet Evol] 2008 Sep; Vol. 48 (3), pp. 1087-93. Date of Electronic Publication: 2008 Jun 24.
Publication Year :
2008

Abstract

A pseudogene with 94% similarity to mitochondrial cytochrome c oxidase subunit I (COI) was identified and localized to chromosome 4 of Drosophila ananassae. Because this chromosome is believed to have reduced recombination, its history can be traced using the pseudo-COI sequence. Pseudo-COI sequences were obtained from 27 iso-female lines of six taxa belonging to the D. ananassae species cluster in which reproductive isolation is incomplete. The phylogenetic network constructed from seven recognized haplotypes (#0-#6) indicated that different taxa inhabiting the same geographic area share the haplotypes: #1 from Papua New Guinean populations of D. ananassae and pallidosa-like-Wau; #2 from Papua New Guinean populations of D. ananassae, pallidosa-like, and papuensis-like; and #4 from South Pacific populations of D. ananassae and D. pallidosa. Taxon-K has a unique haplotype (#6), and 18 mutation steps separate it from the closest haplotype, #2. We discuss the possibility of chromosome 4 introgression beyond taxon boundaries.

Details

Language :
English
ISSN :
1095-9513
Volume :
48
Issue :
3
Database :
MEDLINE
Journal :
Molecular phylogenetics and evolution
Publication Type :
Academic Journal
Accession number :
18621132
Full Text :
https://doi.org/10.1016/j.ympev.2008.06.007