کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9143074 1164374 2005 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phylogeny and molecular evolution of the Drosophila hydei subgroup (Drosophila repleta group) inferred from the Xanthine dehydrogenase gene
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Phylogeny and molecular evolution of the Drosophila hydei subgroup (Drosophila repleta group) inferred from the Xanthine dehydrogenase gene
چکیده انگلیسی
The hydei subgroup (Drosophila repleta group) consists of seven species divided into two complexes: bifurca and hydei, whose phylogenetic relationships are not well understood. To evaluate the molecular phylogeny of this subgroup, we analyzed 2085 bp of coding sequence of the Xanthine dehydrogenase gene in six available species of the hydei subgroup, with Drosophila buzzatii and Drosophila mulleri as an outgroup. For phylogenetic reconstruction we adopted a maximum-likelihood framework, based on the adjustment of descriptive models of nucleotide substitution to real data. We employed distance-based and weighted parsimony methods to construct candidate phylogenies. In all cases, we obtained only one completely resolved tree with strong statistical support for each node, that shows a phylogeny that is partially discordant with the proposed systematics of the subgroup. This tree suggests that the two species complexes are paraphyletic, as opposed to classic phylogenies using morphologic and cytologic traits. This discordance is discussed in relation to its implication for the evolutionary history of the hydei subgroup.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular Phylogenetics and Evolution - Volume 36, Issue 3, September 2005, Pages 695-705
نویسندگان
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