台湾海峡多管水母属——新种及基于线粒体COI序列分析鉴定多管水母

Abstract

【中文摘要】 报道了中国台湾海峡多管水母属一新种——台湾多管水母(Aequorea taiwanensis n.sp.),详细描述其形态特征,并基于线粒体COI基因片段序列,比较、分析了该新种和乳突多管水母、锥状多管水母的序列差异及遗传距离。形态学和分子学数据都支持台湾多管水母为多管水母属有效种。3种多管水母mtCOI基因片断序列在种间存在明显的多态性,3种多管水母的种间序列差异为9.10%~11.9%,种间遗传距离为0.097~0.130,说明该基因片段适用于多管水母属种、种以下阶元及地理种群甄别和种间系统进化学分析。结合其他学者研究结果,认为mtCOI序列差异10%~20%可以作为多管水母属及其他水螅水母纲动物同属种间差异的标准。 【英文摘要】 Aequorea taiwanensis n.sp., a new species of Aequorea: from Minnan-Taiwan Shoal fishing ground upwelling region was described in this paper. Mitochondrial cytochrome oxidase subunit I (mtCOI) gene fragments of A. taiwanensis, A. papillata and A. conica was successfully amplified by universal primers, and obtained 538 bp sequences. Sequence divergence and genetic distance was analysed based on the mtCOI gene sequences. Both morphological and molecular data supported that A. taiwanensis n.sp is a valid specie...