Insights into the evolutionary history of Indo-Pacific bloodfeeding terrestrial leeches (Hirudinida : Arhynchobdellida : Haemadipisdae)
Insights into the evolutionary history of Indo-Pacific bloodfeeding terrestrial leeches (Hirudinida : Arhynchobdellida : Haemadipisdae)
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DOI：
10.1071/is10013
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发表时间：
2010-01-01
影响因子：
2.2
通讯作者：
Siddall, Mark E.
中科院分区：
文献类型：
--
作者：
Borda, Elizabeth;Siddall, Mark E.
蛭科（Haemadipsidae）是一种臭名昭著的吸血环节动物，适应于整个印度太平洋的热带和亚热带雨林。该科传统上包括双颌特有种，每种都被归入自己的属，分布于大陆和火山岛，包括：澳大利亚、印度尼西亚、马达加斯加、巴布亚新几内亚、菲律宾、塞舌尔和南太平洋岛屿，而三颌三头蛭属和特殊的血蛭属则是印度次大陆独有的，分布于东亚和东南亚。其中一个更引人注目的方面是血脂鲤科的分布后冈瓦纳大陆。本研究对山蛭科鱼类的系统发育、分类和地理分布进行了研究。超过5 kb的序列数据，从三个基因（核18S rDNA和28S rDNA和线粒体COI）的37个haemadipsid样本，代表12的15个公认的属，进行了分析的最大简约和贝叶斯推理的标准。结果表明，广布的双颌种形成了一个单系群，起源于三颌祖先，并与一个新的三颌分支的Haemadipsidae姐妹。这个系统发育假说拒绝冈瓦纳的地理变异作为一个解释的多样化的haemadipsids。Haemadipsidae被认为是这些印度太平洋水蛭的正式名称。而细分Haemadipsinae和Domanibdellinae澄清，有必要建立一个新的亚科，Tritetrabdellinae，为新确定的trignathous分支是姐妹Domanibdellinae。本研究为进一步阐明这些陆生环节动物的进化关系和分类奠定了基础。
Haemadipsidae is a clade of notorious bloodfeeding annelids adapted to tropical and sub-tropical rainforests found throughout the Indo-Pacific. This family traditionally includes duognathous (two-jawed) endemics, each placed in their own genus, from continental and volcanic islands including: Australia, Indonesia, Madagascar, Papua New Guinea, Philippines, Seychelles, and South Pacific islands, while trignathous (three-jawed) Tritetrabdella species and the speciose Haemadipsa are exclusive to the Indian subcontinent ranging into east and south-east Asia. One of the more compelling aspects of haemadipsids is their distribution on post-Gondwanan landmasses. In this study, the phylogenetic relationships, taxonomy and biogeographic patterns of Haemadipsidae were examined. Over 5 kb of sequence data from three genes (nuclear 18S rDNA and 28S rDNA and mitochondrial COI) for 37 haemadipsid exemplars, representing 12 of the 15 recognised genera, were analysed under the criteria of maximum parsimony and Bayesian inference. The results show that widespread duognathous species form a monophyletic group derived from trignathous ancestry and are sister to a new trignathous clade for Haemadipsidae. This phylogenetic hypothesis rejected Gondwanan vicariance as an explanation for the diversification of haemadipsids. Haemadipsidae is accepted as the formal name for these Indo-Pacific leeches. Whereas the subdivisions Haemadipsinae and Domanibdellinae are clarified, there is a need to establish a new subfamily, Tritetrabdellinae, for the newly identified trignathous clade that is sister to Domanibdellinae. This study provides a basis for continued elucidation of the evolutionary relationships and classification of these terrestrial annelids.