کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8645641 1569790 2018 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The complete mitochondrial genome of Huananpotamon lichuanense (Decapoda: Brachyura) with phylogenetic implications for freshwater crabs
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی ژنتیک
پیش نمایش صفحه اول مقاله
The complete mitochondrial genome of Huananpotamon lichuanense (Decapoda: Brachyura) with phylogenetic implications for freshwater crabs
چکیده انگلیسی
In the present study, we determined the complete mitochondrial genome of Huananpotamon lichuanense (Decapoda: Brachyura) for the first time. The genome is 15,380 bp in length and typically consists of 37 genes. When the gene order was compared to the ancestral crustacean type, two tRNA genes (tRNAHis and tRNAGln) were rearranged in H. lichuanense, and the translocation of tRNAGln appeared only in Potamoidea crabs, such as Geothelphusa dehaani and Sinopotamon xiushuiense, supporting the monophyly of the Potamoidea superfamily. Thirteen protein-coding genes and 2 rRNA genes were divided into five complexes to perform the phylogenetic analysis, and the results showed that the trees constructed by complex I (ND1-ND6 and ND4L), complex IV (COX1-COX3) and rRNA genes better accord with the morphological classification system, suggesting that molecular markers of higher-level phylogeny can be developed in these three complexes in the future. The estimated divergence time for freshwater crabs is approximately 133.58 Ma, and G. dehaani from Japan diverged from the freshwater crabs of mainland China approximately 60.66 Ma. A selective pressure analysis based on current data revealed obviously increasing dN/dS ratios (except for ATP6 and ND4L) of freshwater crabs, and the accumulation of nonsynonymous mutations suggests that terrestrial habitats provide a relatively relaxed selective pressure environment for this group.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gene - Volume 646, 10 March 2018, Pages 217-226
نویسندگان
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