Hierarchical structure in the Drosophila mojavensis cluster (Diptera: Drosophilidae).
نویسندگان
چکیده
Sequences from three gene regions from the nuclear and mitochondrial genomes were used to examine the extent and nature of hierarchical structure in the Drosophilamojavensis cluster (Drosophila arizonae, D. mojavensis and D. navojoa) of the D. repleta species group. To determine the genetic divergence of these three species, sequence data were analyzed using maximum parsimony and population aggregation analysis. Individual and combined gene genealogies indicate that D. arizonae and D. mojavensis are neither diagnosable nor monophyletic with respect to one another. Although D. navojoa has differentiated from D. arizonae and D. mojavensis, as diagnosed by nuclear gene sequences, it may have undergone a reticulation event with D. arizonae. Our results suggest that either these taxa are still undergoing differentiation at the molecular level or have experienced gene flow in the recent past.
منابع مشابه
Evolution of the mojavensis cluster of cactophilic Drosophila with descriptions of two new species.
The mojavensis cluster of the repleta species group of Drosophila (Drosophilidae: Diptera) consists of three species. One is newly described as D. navojoa. A second species, described here as D. arizonae, replaces D. arizonensis, which has become a junior subjective synonym for D. mojavensis, the third species in the cluster. A phylogeny of the three species is presented, based on chromosomal i...
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D. C. S. G. OLIVEIRA, E. H. WINTERMUTE, W. J. ETGES, W. B. HEED, P. M. O’GRADY and R. DESALLE 1 Di ision of In ertebrate Zoology, American Museum of Natural History, New York, NY, USA. 2 Department of Biological Sciences, Uni ersity of Arkansas, Fayette ille, AR, USA. 3 Department of Ecology and E olutionary Biology, The Uni ersity of Arizona, Tucson, AZ, USA. 4 Department of Biology, Uni ersit...
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ورودعنوان ژورنال:
- Hereditas
دوره 139 3 شماره
صفحات -
تاریخ انتشار 2003