Trilobodrilus itoi sp nov., with a Re-Description of T. nipponicus (Annelida: Dinophilidae) and a MolecularPhylogeny of the Genus

• 柁原, 宏

  北海道大学大学院理学院

• Ikoma, Maho

  北海道大学大学院理学院

• 山崎, 博史

  琉球大学理学部

• Hiruta, Shimpei F.

  北海道大学大学院理学院

抄録

The marine interstitial annelid Trilobodrilus itoi sp. nov., the sixth member of the genus, is described on the basis of specimens collected intertidally at Ishikari Beach, Hokkaido, Japan; this is the second species in the genus described from the Pacific Rim. In addition, T. nipponicus Uchida and Okuda, 1943 is re-described based on fresh topotypic material from Akkeshi, Hokkaido, Japan. From both species, we determined sequences of the nuclear 18S and 28S rRNA genes, and the mitochondrial cytochrome c oxidase subunit I (COI) gene. Molecular phylogenetic trees based on concatenated sequences of the three genes showed that T. itoi and T. nipponicus form a clade, which was the sister group to a clade containing the two European congeners T. axi Westheide, 1967 and T. heideri Remane, 1925. The Kimura two-parameter distance for COI was 22.5-22.7% between T. itoi and T. nipponicus, comparable with interspecific values in other polychaete genera. We assessed the taxonomic utility of epidermal inclusions and found that the known six species can be classified into three groups.

収録刊行物

• Zoological Science

  Zoological Science 32 (4), 405-417, 2015-08-01

  Zoological Society of Japan

キーワード

• North Pacific
• marine invertebrates
• archiannelid
• mesopsammon
• meiofauna
• interstitial

詳細情報

• CRID: 1050298532703599616
• NII論文ID: 120005828486
• NII書誌ID: AA11510015
• HANDLE: 2324/4773143
• HANDLE: 2115/62716
• NDL書誌ID: 026693354
• ISSN: 02890003
• Web Site: http://id.ndl.go.jp/bib/026693354
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026693354
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • NDL
  • CiNii Articles