{"title":"Phylogenetic and morphological analyses of Japanese Aquarius water strider, with a new synonym","authors":"Naoki Hiraishi, Tomoya Suzuki, Ryosuke Matsushima, Shin-ya Ohba","doi":"10.1111/ens.12544","DOIUrl":null,"url":null,"abstract":"<p>The genus <i>Aquarius</i>, of the subfamily Gerrinae, was formerly divided into two species and one subspecies in Japan (<i>A</i>. <i>paludum paludum</i>, <i>A</i>. <i>paludum amamiensis</i> and <i>A</i>. <i>elongatus</i>, respectively). <i>Aquarius haliplous</i> Yasunaga et al. 2018 has recently been described as a new species, which occurs in brackish waters of Nagasaki Prefecture and is found sympatrically with the widely distributed species, <i>A</i>. <i>p</i>. <i>paludum</i>. However, they are considered to be speciated, with no cross-breeding. In this study, molecular phylogenetic and morphological analyses were undertaken using the mitochondrial DNA <i>COI</i> (529 bp) and nuclear DNA histone H3 (314 bp) gene regions to investigate the genetic and morphological differentiation in the genus <i>Aquarius</i>, including <i>A</i>. <i>haliplous</i>, throughout Japan (including the islands). The results show that, unlike <i>A</i>. <i>p</i>. <i>paludum</i>, <i>A</i>. <i>p</i>. <i>amamiensis</i> and <i>A</i>. <i>haliplous</i>, <i>A</i>. <i>elongatus</i> displays substantial genetic differentiation. Considering that, although morphological differences exist in the antennae of <i>A</i>. <i>p</i>. <i>paludum</i> and <i>A</i>. <i>p</i>. <i>amamiensis</i>, <i>A</i>. <i>haliplous</i> has no clear genetic or morphological difference from <i>A</i>. <i>p</i>. <i>paludum</i>, and hence cannot be classified as a distinct species. Therefore, we propose that <i>A</i>. <i>haliplous</i> be synonymized with <i>A</i>. <i>paludum</i>.</p>","PeriodicalId":11745,"journal":{"name":"Entomological Science","volume":"26 1","pages":""},"PeriodicalIF":0.7000,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Entomological Science","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ens.12544","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENTOMOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The genus Aquarius, of the subfamily Gerrinae, was formerly divided into two species and one subspecies in Japan (A. paludum paludum, A. paludum amamiensis and A. elongatus, respectively). Aquarius haliplous Yasunaga et al. 2018 has recently been described as a new species, which occurs in brackish waters of Nagasaki Prefecture and is found sympatrically with the widely distributed species, A. p. paludum. However, they are considered to be speciated, with no cross-breeding. In this study, molecular phylogenetic and morphological analyses were undertaken using the mitochondrial DNA COI (529 bp) and nuclear DNA histone H3 (314 bp) gene regions to investigate the genetic and morphological differentiation in the genus Aquarius, including A. haliplous, throughout Japan (including the islands). The results show that, unlike A. p. paludum, A. p. amamiensis and A. haliplous, A. elongatus displays substantial genetic differentiation. Considering that, although morphological differences exist in the antennae of A. p. paludum and A. p. amamiensis, A. haliplous has no clear genetic or morphological difference from A. p. paludum, and hence cannot be classified as a distinct species. Therefore, we propose that A. haliplous be synonymized with A. paludum.
宝瓶属,Gerrinae亚科,以前在日本分为两个种和一个亚种(A. paludum paludum, A. paludum amamiensis和A. elongatus)。水瓶座halipous Yasunaga et al. 2018最近被描述为一个新物种,它出现在长崎县的半咸淡水中,与广泛分布的物种a . p. paludum共生。然而,它们被认为是有物种的,没有杂交。本研究利用线粒体DNA COI (529 bp)和核DNA组蛋白H3 (314 bp)基因区进行分子系统发育和形态学分析,探讨了日本(包括岛屿)地区宝瓶属(包括A. halipous)的遗传和形态学分化。结果表明,与paludum、a.p. amamiensis和haaliplous不同,A. elongatus表现出明显的遗传分化。综上所述,尽管a . p. paludum和a . p. amamiensis的触角在形态上存在差异,但haaliplous与a . p. paludum在遗传和形态上都没有明显的差异,因此不能将其归类为一个独立的物种。因此,我们建议将A. halipous与A. paludum同义。
期刊介绍:
Entomological Science is the official English language journal of the Entomological Society of Japan. The Journal publishes original research papers and reviews from any entomological discipline or from directly allied field in ecology, behavioral biology, physiology, biochemistry, development, genetics, systematics, morphology, evolution and general entomology. Papers of applied entomology will be considered for publication if they significantly advance in the field of entomological science in the opinion of the Editors and Editorial Board.