基于形态学和分子数据描述的柬埔寨霍斯特属（1889年）的两种新的半水生蚯蚓（寡毛纲，阿尔米科）

Two new Cambodian semi-aquatic earthworms in the genus Horst, 1889 (Oligochaeta, Almidae), based on morphological and molecular data.

作者信息

Jirapatrasilp Parin, Prasankok Pongpun, Sutcharit Chirasak, Chanabun Ratmanee, Panha Somsak

机构信息

Biological Sciences Program, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand..

出版信息

Zootaxa. 2016 Nov 10;4189(3):zootaxa.4189.3.5. doi: 10.11646/zootaxa.4189.3.5.

DOI:10.11646/zootaxa.4189.3.5

PMID:27988747

Abstract

Combining morphological and molecular data is a powerful approach to support the discovery of new species. Here, two new species of the semi-aquatic earthworm genus Glyphidrilus, G. jamiesoni sp. n. and G. kralanhensis sp. n., are described from the Mekong Basin in Cambodia. They are morphologically distinguished by the respective locations of wings and spermathecae; furthermore, G. kralanhensis sp. n. has three pairs of ovaries, probably an autapomorphic trait. In addition, two mitochondrial gene fragments (COI and 16s rRNA) were sequenced of types of the new species and of five further Glyphidrilus species described recently from the Mekong basin in Thailand and Laos. They revealed a high level of genetic divergence of the new species compared to the other earthworm taxa. The evolutionary relationships among the Mekong Glyphidrilus members is discussed with reference to the recent paleogeography of the Mekong River drainage.

摘要

结合形态学和分子数据是支持发现新物种的有力方法。在此，描述了来自柬埔寨湄公河流域的半水生蚯蚓属Glyphidrilus的两个新物种，即Jamiesoni G. sp. n.和Kralanhensis G. sp. n.。它们在形态上通过翅膀和受精囊的各自位置来区分；此外，Kralanhensis G. sp. n.有三对卵巢，这可能是一个自近裔性状。此外，对新物种以及最近在泰国和老挝湄公河流域描述的另外五个Glyphidrilus物种的类型进行了两个线粒体基因片段（COI和16s rRNA）的测序。结果显示，与其他蚯蚓类群相比，新物种具有高度的遗传分化。参照湄公河流域近期的古地理情况，讨论了湄公河Glyphidrilus成员之间的进化关系。