Morphological and Genetic Characterization of the First Species of <i>Thalassodrilides</i> (Annelida: Clitellata: Naididae: Limnodriloidinae) from Japan

• Torii Takaaki

  IDEA Consultants Inc.

• Erséus Christer

  University of Gothenburg, Department of Biological and Environmental Sciences

• Martinsson Svante

  University of Gothenburg, Department of Biological and Environmental Sciences

• Ito Mana

  National Research Institute of Fisheries and Environment of Inland Sea, Fisheries Research Agency

Bibliographic Information

Other Title

• Morphological and Genetic Characterization of the First Species of Thalassodrilides (Annelida: Clitellata: Naididae: Limnodriloidinae) from Japan

Abstract

A species of marine limnodriloidine oligochaete, Thalassodrilides cf. briani Erséus, 1992, is recorded from gravelly sand sediments of the subtidal zone in Ehime Prefecture, Japan. The present material agrees with the original description of T. briani, which was first found at Hong Kong, with the exception that the copulatory sacs are oval; not slender. Despite the lack of genetic data for the Hong Kong population, we conclude that the Japanese specimens are conspecific with it, or at least very closely related, based on morphological considerations. This is the first record of the genus Thalassodrilides Brinkhurst and Baker, 1979 in Japan. The phylogenetic relationships between T. cf. briani and three other species of Thalassodrilides are estimated, based on partial DNA sequences of the mitochondrial cytochrome c oxidase subunit I (COI) gene and the complete nuclear ribosomal Internal Transcribed Spacer (ITS) region, using two members of the closely related genus Doliodrilus Erséus, 1984 as outgroups. The genetic analysis shows that T. cf. briani is a species delimited by both mitochondrial and nuclear data, and clearly separated from at least its closely related congeners in the Northwest Atlantic (Caribbean and adjacent areas).

Journal

• Species Diversity

  Species Diversity 21 (2), 117-125, 2016

  The Japanese Society of Systematic Zoology

Keywords

• Oligochaeta
• marine subtidal sediments
• new record
• taxonomy
• molecular systematics
• COI
• ITS

Details

• CRID: 1390282679434169856
• NII Article ID: 130006832085
• NII Book ID: AA11114903
• DOI: 10.12782/sd.21.2.117
• ISSN: 21897301
• ISSN: 13421670
• NDL BIB ID: 027742225
• Web Site: http://id.ndl.go.jp/bib/027742225
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027742225
• Web Site: https://www.jstage.jst.go.jp/article/specdiv/21/2/21_210211/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed