鳃虱科(甲壳动物亚门,等足目)种间系统发育支序分析

Cladistic Analysis of the Phylogenetic Relationships Among Species of Family Bopyridae (Crustacea,Isopoda) Based on Morphological Characters

本文选择鳃虱科Bopyridae的47个形态学性状,利用PAUP软件,以支序分析方法对中国海域鳃虱科22属38种进行种间系统发育关系研究。支序分析结果较好地反映了鳃虱科内姐妹群的关系。根据分析结果,鳃虱科中较早分出的物种为假鳃虱亚科巨鳃虱属中的日本巨鳃虱Gigantione ishigakiensis;较晚分化出来的物种是背腹虱亚科腹虱属的日本腹虱Athelges takanoshi mensis和假盖腹虱属的日本假盖腹虱Pseudostegias setoensis,种间姐妹群关系为:假鳃虱亚科中偏寄居蟹鳃虱属的球足偏寄居蟹鳃虱Asymmetrione globifera与仿偏寄居蟹鳃虱属的疣缘仿偏寄居蟹鳃虱Parasymmetrione tuberculineata为姐妹群,假鳃虱亚科扁蝼蛄虾鳃虱属中的卵圆扁蝼蛄虾鳃虱Gyge ovalis与福建扁蝼蛄虾鳃虱Gyge fujianensis为一对姐妹群,蟹鳃虱亚科指突鳃虱属中的霍氏指突鳃虱Dactylokepon halthuisi与蝼蛄虾鳃虱属的双突蝼蛄虾鳃虱Upogebione bidigitatus为一对姐妹群,多疣蟹鳃虱属的分节多疣蟹鳃虱Onkokepon articulatus与北部湾多疣蟹鳃虱O.beibuensis为一对姐妹群,异节蟹鳃虱属的单异节蟹鳃虱Allokepon monody与长尾异节蟹鳃虱A.longicauda为一对姐妹群。

The phylogenetie relationships among 38 species of the family Bopyridae were studied based on 47 morphological characters of the samples collected from Chinese seas, using cladistic analysis by PAUP program. The results showed that among the 38 species, Gigantione ishigakiensis （ Shiino, 1941 ） of Psedioninae derived earlier than other species, Athelges takanoshimensis （Ishii, 1914） and Pseudostegias setoensis （Shiino, 1933） of the subfamily of Athelginae derived later than other species. Finally, the following were the sister groups that identified in this study： Asymmetrione globifera （ An et al., 2009） and Parasymmetrione tuberculineata （An et aL, 2010） ; Gyge ovalis （Shiino, 1939） and Gygefufianensis （An et al. , 2009 ） ; Dactylokepon holthuisi （Bourdon, 1967 ） and Upogebione bidigitatus （An et al. , 2009） ; Onkokepon articulatus （ An et al. , 2006 ） and Onkokepon beibuensis （ An et al. , 2006 ） ; Allokepon monody （ Bourdou, 1967 ） and Allokepon longicauda （ Duan et aL, 2008）.