A unique new species of halophilous water strider of the genus <i>Aquarius</i> Schellenberg (Hemiptera: Gerridae: Gerrinae) endemic to Omura Bay, Nagasaki, Japan

Yasunaga, Tomohide; Asanabe, Haruka; Hirano, Akiko; Momosaka, Hitomi; Nagashima, Tetsuya; Hayashi, Masami

doi:10.4039/tce.2018.22

Cited by 3 publications

(31 citation statements)

References 12 publications

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“…paludum (see Results), Yasunaga et al . (2018) confirmed that A . haliplous could breed at a salinity of 6.0%–28.0‰ in Omura Bay, Nagasaki Prefecture.…”

Section: Methodsmentioning

confidence: 58%

“…haliplous (Yasunaga et al . 2018). However, in the nDNA histone H3 region, the sequence was identical to that of A .…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, based on the taxonomic keys identified by Yasunaga et al . (2018) and Asanabe et al . (2019), we predicted the plot ranges of the ratio of the lengths of male antennomere II ( x ) to antennomere IV ( y ) and that of the lengths of antennomere I to mesotarsomere I (antennomere I/mesotarsomere I), respectively, for each species (Figs S1, S2).…”

Section: Methodsmentioning

confidence: 95%

“…Based on these measurements and the key to species of the genus Aquarius from Japan (Yasunaga et al . 2018; Asanabe et al . 2019), we investigated: (i) the relationship between the lengths of antennomere II and antennomere IV in males; and (ii) that between the lengths of antennomere I and mesotarsomere I in both sexes.…”

Section: Methodsmentioning

confidence: 99%

“…amamiensis (Miyamoto, 1958) were formerly known in Japan. Subsequently, A. haliplous Yasunaga, Asanabe et Nagashima, 2018, endemic to the brackish waters of Omura Bay, Nagasaki Prefecture, was described as a new species (Yasunaga et al . 2018) due to differences in its morphology with A .…”

Section: Introductionmentioning

confidence: 99%

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

Hiraishi

Suzuki

Matsushima

et al. 2023

Entomological Science

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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.

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“…paludum (see Results), Yasunaga et al . (2018) confirmed that A . haliplous could breed at a salinity of 6.0%–28.0‰ in Omura Bay, Nagasaki Prefecture.…”

Section: Methodsmentioning

confidence: 58%

“…haliplous (Yasunaga et al . 2018). However, in the nDNA histone H3 region, the sequence was identical to that of A .…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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