6533b82afe1ef96bd128c27f

RESEARCH PRODUCT

Phylogeny of the Drosophila obscura species group deduced from mitochondrial DNA sequences

Andrés MoyaEladio BarrioAmparo Latorre

subject

Mitochondrial DNARNA Transfer LeuRNA Mitochondrialmedia_common.quotation_subjectMolecular Sequence DataBiologyDNA MitochondrialMonophylySpecies SpecificityPhylogeneticsRNA Ribosomal 16SGeneticsAnimalsDrosophila (subgenus)Phyletic gradualismMolecular BiologyPhylogenyRNA Transfer SerEcology Evolution Behavior and Systematicsmedia_commonGene RearrangementGeneticsBase CompositionBase SequencePhylogenetic treeNADH DehydrogenaseSequence Analysis DNACytochrome b Groupbiology.organism_classificationMolecular phylogeneticsRNADrosophilaDrosophila obscura

description

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).

http://www.scopus.com/inward/record.url?eid=2-s2.0-0028105007&partnerID=MN8TOARS