Phylogenetic and morphological analyses of Japanese Aquarius water strider, with a new synonym

Author:

Hiraishi Naoki1,Suzuki Tomoya2ORCID,Matsushima Ryosuke3ORCID,Ohba Shin‐ya4ORCID

Affiliation:

1. Graduate School of Education Nagasaki University Nagasaki Japan

2. Graduate School of Global Environmental Studies Kyoto University Kyoto Japan

3. NIDEK Co., Ltd. Gamagori Japan

4. Faculty of Education Nagasaki University Nagasaki Japan

Abstract

AbstractThe genus Aquarius, of the subfamily Gerrinae, was formerly divided into two species and one subspecies in Japan (Apaludum paludum, Apaludum amamiensis and Aelongatus, 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. ppaludum. 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 Ahaliplous, throughout Japan (including the islands). The results show that, unlike A. ppaludum, A. pamamiensis and Ahaliplous, Aelongatus displays substantial genetic differentiation. Considering that, although morphological differences exist in the antennae of A. ppaludum and A. pamamiensis, Ahaliplous has no clear genetic or morphological difference from A. ppaludum, and hence cannot be classified as a distinct species. Therefore, we propose that Ahaliplous be synonymized with Apaludum.

Publisher

Wiley

Subject

Insect Science,Ecology, Evolution, Behavior and Systematics

Reference59 articles.

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