Integrative description of a new species of Dugesia (Platyhelminthes, Tricladida, Dugesiidae) from southern China, with its complete mitogenome and a biogeographic evaluation

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-16 DOI:10.3897/zse.100.114016

Ying Zhu, JiaJie Huang, R. Sluys, Yi Liu, Ting Sun, AN-TAI Wang, Yu Zhang

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引用次数: 0

Abstract

A new species of freshwater flatworm of the genus Dugesia from Guangdong Province in China is described through an integrative approach, including molecular and morphological data, as well as mitochondrial genome analysis. The new species, Dugesia ancoraria Zhu & Wang, sp. nov., is characterised by: (a) a highly asymmetrical penis papilla, provided with a hunchback-like dorsal bump; (b) a short duct between seminal vesicle and ejaculatory duct; and (c) a postero-ventral course of the ejaculatory duct, which opens to the exterior at the subterminal, ventral part of the penis papilla. The molecular phylogenetic tree obtained from the concatenated dataset of four DNA markers (18S rDNA, ITS-1, 28S rDNA, COI) facilitated determination of the phylogenetic position of the new species, which shares a sister-group relationship with a small clade, comprising D. notogaea Sluys & Kawakatsu, 1998 from Australia and D. bengalensis Kawakatsu, 1983 from India. The circular mitogenome of the new species is 17,705 bp in length, including 12 protein coding genes, two ribosomal genes, and 22 transfer RNAs. Via analysis of gene order of mitochondrial genomes, the presently available pattern of mitochondrial gene rearrangement in the suborder Continenticola is discussed.

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综合描述来自中国南方的一种新的 Dugesia（扁形动物，三链目，Dugesiidae），及其完整的有丝分裂基因组和生物地理学评价

通过分子和形态学数据以及线粒体基因组分析等综合方法，描述了产自中国广东省的淡水扁形虫属的一个新物种。新物种 Dugesia ancoraria Zhu & Wang, sp：(a) 阴茎乳头高度不对称，背侧有一驼背状突起；(b) 精囊与射精管之间有一短导管；(c) 射精管后外侧走向，在阴茎乳头腹侧近端向外开口。从四个 DNA 标记（18S rDNA、ITS-1、28S rDNA、COI）的数据集中获得的分子系统发生树有助于确定该新物种的系统发生位置，它与一个小支系（包括澳大利亚的 D. notogaea Sluys & Kawakatsu，1998 年和印度的 D. bengalensis Kawakatsu，1983 年）属于姊妹群关系。新物种的环形有丝分裂基因组长度为 17 705 bp，包括 12 个蛋白质编码基因、2 个核糖体基因和 22 个转移 RNA。通过对线粒体基因组基因顺序的分析，讨论了目前大陆虫亚目线粒体基因重排的模式。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.