Phylogeny of the Drosophila obscura species group deduced from mitochondrial DNA sequences.
Approximately 2 kb corresponding to different regions of the mtDNA of 14 different species of the obscura group of Drosophila have been sequenced. In spite of the uncertainties arising in the phylogenetic reconstruction due to a restrictive selection toward a high mtDNA A+T content, all the phylogenetic analysis carried out clearly indicate that the obscura group is formed by, at least, four well-defined lineages that would have appeared as the consequence of a rapid phyletic radiation. Two of the lineages correspond to monophyletic subgroups (i.e., affinis and pseudoobscura), whereas the obscura subgroup remains heterogeneous assemblage that could be reasonably subdivided into at least two complexes (i.e., subobscura and obscura).
Barrio
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Departament de Genètica, Facultat de Biologia, Universitat de València, Spain.
Latorre
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Moya
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D000818:Animals; D001482:Base Composition; D001483:Base Sequence; D003573:Cytochrome b Group / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics*; D004330:Drosophila / Q000145:classification* / Q000235:genetics*; D015321:Gene Rearrangement; D008969:Molecular Sequence Data; D009245:NADH Dehydrogenase / Q000235:genetics; D010802:Phylogeny; D012313:RNA / Q000235:genetics; D000077278:RNA, Mitochondrial; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012356:RNA, Transfer, Leu / Q000235:genetics; D012362:RNA, Transfer, Ser / Q000235:genetics; D017422:Sequence Analysis, DNA; D013045:Species Specificity
D003573:Cytochrome b Group; D004272:DNA, Mitochondrial; D000077278:RNA, Mitochondrial; D012336:RNA, Ribosomal, 16S; D012356:RNA, Transfer, Leu; D012362:RNA, Transfer, Ser; D012313:RNA; D009245:NADH Dehydrogenase