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矛尾复虾虎鱼物种命名有效性探讨 被引量:5

STUDY ON SPECIES VALIDATION FOR SYNECHOGOBIUS HASTA
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摘要 利用形态学和遗传学方法探讨斑尾复虾虎鱼和矛尾复虾虎鱼的亲缘关系及矛尾复虾虎鱼物种有效性。研究结果显示:两种虾虎鱼在量度特征上存在极显著的差异,但分节特征不存在显著差异;与斑尾复虾虎鱼相比,矛尾复虾虎鱼头长相对较小,而尾鳍相对较长。对两种虾虎鱼的线粒体DNA控制区片段序列进行比较分析,得到两种虾虎鱼的遗传距离仅为0.006,与种内距离相当;NJ和MP法构建的系统树也显示两种虾虎鱼间亲缘关系很近,两种间不存在显著差异。综上,矛尾复虾虎鱼并非有效物种,应为斑尾复虾虎鱼的同种异名。 Many Synechogobius species are commercially important species. The species validation of Synechogobius hasta was studied by comparing the morphological and genetic variability of S. ommaturus and S. hasta. The analysis results of morphological characters showed that the differentiation of meristic counts between two species was not significant, and the significant differentiation mainly existed among the measurable characters. The morphological results revealed that the significant differentiation was mainly the result of variation of measurable characters rather than meristic counts between the two species. The head length of S. hasta was relatively shorter, whereas the tail fin length was relatively longer than S. ommaturus. The genetic distance between two species was only 0.006 based on partial mitochondrial control region sequence, which is similar with distance intraspecies. The topology constructed by NJ and MP method also showed no striking variations between two species. The results indicated that S. hasta should not be regarded as a valid species, which could be the synonym of S. ommaturus.
出处 《动物分类学报》 CSCD 北大核心 2010年第2期352-359,共8页 Acta Zootaxonomica Sinica
基金 中国高技术研究发展计划(2006AA09Z418)项目资助
关键词 斑尾复虾虎鱼 矛尾复虾虎鱼 形态特征 控制区 物种有效性 Synechogobius ommaturus, Synechogobius basra, morphological, characters, control region, species validation.
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