Molecular systematics of theDrosophila hydei subgroup as inferred from mitochondrial DNA sequences |
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| Authors: | Greg S Spicer Scott Pitnick |
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| Institution: | (1) Institute of Molecular Medical Sciences, 460 Page Mill Road, 94306 Palo Alto, CA, USA;(2) Department of Biological Sciences, Bowling Green State University, 43403 Bowling Green, OH, USA;(3) Present address: Department of Biology, Syracuse University, 13244 Syracuse, NY, USA |
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| Abstract: | The phylogeny of theDrosophila hydei subgroup, which is a member of theD. repleta species group, was inferred from 1,515 base pairs of mitochondrial DNA sequence of the cytochrome oxidase subunits I, II,
and III. Four of the seven species in the subgroup were examined, which are placed into two taxonomic complexes: theD. bifurca complex (D. bifurca) andD. nigrohydei) and theD. hydei complex (D. hydei and (D. eohydei). Both complexes appear to be monophyletic, although theD. bifurca complex is only weakly supported. The evolution of chromosomal change, interspecific crossability, sperm gigantism, and divergence
times of the subgroup is discussed in a phylogenetic context.
Correspondence to: G. Spicer |
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| Keywords: | DNA sequence variation Maximum likelihood Γ -distributed rates model Cytochrome oxidase Molecular clock |
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