Proper phylogenetic reconstruction is crucial for understanding many evolutionary phenomena. In spite of the great success of molecular phylogenetics, DNA signal still may be limited by some intrinsic constraints such...Proper phylogenetic reconstruction is crucial for understanding many evolutionary phenomena. In spite of the great success of molecular phylogenetics, DNA signal still may be limited by some intrinsic constraints such as codon usage bias. The phylogenetic relationships between the five species subgroups of the Drosophila saltans group are a good example of conflicting molecular phylogenies drawn from different genes due to an ancestral substitutional shift. Here, forty morphological characters were analyzed using the same set of species used in previous molecular studies, with at least a single representative of each subgroup. The cladistic analysis was in disagreement with most of the previous hypotheses in placing the sturtevanti subgroup as an early branch, whereas the four remaining subgroups form a well supported clade that can be further subdivided into two sister clades： one containing the cordata and the elliptica subgroups, whereas the second includes the parasaltans and the saltans subgroups. The molecular evolution （codon usage bias） of the saltans group were revised in light of the present finding. The analysis highlights the important role of morphology in phylogeny reconstruction and in understanding molecular evolutionary phenomena.展开更多
俄罗斯哺乳动物研究者Pavlinov I.Ya.和Lissovsky A.A编著完成的《俄罗斯哺乳动物：分类和地理分布纲要》已于2012年底面世。该书为俄罗斯莫斯科州立大学动物学博物馆《动物区系研究》（Studies on the Fauna-Archive of the Zoological...俄罗斯哺乳动物研究者Pavlinov I.Ya.和Lissovsky A.A编著完成的《俄罗斯哺乳动物：分类和地理分布纲要》已于2012年底面世。该书为俄罗斯莫斯科州立大学动物学博物馆《动物区系研究》（Studies on the Fauna-Archive of the Zoological Museum of Moscow State University）系列丛书的第52卷,由莫斯科KMK科学出版社出版发行,全书共604页。该书较为系统地介绍了俄罗斯最新疆域范围内的现生哺乳动物,包括9目，46科，138属，344种。各单元分别由不同的专家负责编写，参考了近年来N-％动物系统学、分子系统学和支序分类学的最新研究成果。全书涉及各物种分类地位的变动、地理分布和濒危等级等，该书以俄语和英语双语形式出版，同时还列举参考文献1500多篇，可为国内哺乳动物研究者提供参考。该书英文全名列举如下：展开更多
基金funded by the Prix Jeune Chercheur of the Fondation Bettencourt-Schueller
文摘Proper phylogenetic reconstruction is crucial for understanding many evolutionary phenomena. In spite of the great success of molecular phylogenetics, DNA signal still may be limited by some intrinsic constraints such as codon usage bias. The phylogenetic relationships between the five species subgroups of the Drosophila saltans group are a good example of conflicting molecular phylogenies drawn from different genes due to an ancestral substitutional shift. Here, forty morphological characters were analyzed using the same set of species used in previous molecular studies, with at least a single representative of each subgroup. The cladistic analysis was in disagreement with most of the previous hypotheses in placing the sturtevanti subgroup as an early branch, whereas the four remaining subgroups form a well supported clade that can be further subdivided into two sister clades： one containing the cordata and the elliptica subgroups, whereas the second includes the parasaltans and the saltans subgroups. The molecular evolution （codon usage bias） of the saltans group were revised in light of the present finding. The analysis highlights the important role of morphology in phylogeny reconstruction and in understanding molecular evolutionary phenomena.
文摘俄罗斯哺乳动物研究者Pavlinov I.Ya.和Lissovsky A.A编著完成的《俄罗斯哺乳动物：分类和地理分布纲要》已于2012年底面世。该书为俄罗斯莫斯科州立大学动物学博物馆《动物区系研究》（Studies on the Fauna-Archive of the Zoological Museum of Moscow State University）系列丛书的第52卷,由莫斯科KMK科学出版社出版发行,全书共604页。该书较为系统地介绍了俄罗斯最新疆域范围内的现生哺乳动物,包括9目，46科，138属，344种。各单元分别由不同的专家负责编写，参考了近年来N-％动物系统学、分子系统学和支序分类学的最新研究成果。全书涉及各物种分类地位的变动、地理分布和濒危等级等，该书以俄语和英语双语形式出版，同时还列举参考文献1500多篇，可为国内哺乳动物研究者提供参考。该书英文全名列举如下：
