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Hokkaido University Collection of Scholarly and Academic Papers >
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Trilobodrilus itoi sp nov., with a Re-Description of T. nipponicus (Annelida: Dinophilidae) and a MolecularPhylogeny of the Genus
| Title: | Trilobodrilus itoi sp nov., with a Re-Description of T. nipponicus (Annelida: Dinophilidae) and a MolecularPhylogeny of the Genus |
| Authors: | Kajihara, Hiroshi Browse this author →KAKEN DB | | Ikoma, Maho Browse this author | | Yamasaki, Hiroshi Browse this author | | Hiruta, Shimpei F. Browse this author |
| Keywords: | North Pacific | | marine invertebrates | | archiannelid | | mesopsammon | | meiofauna | | interstitial |
| Issue Date: | Aug-2015 |
| Publisher: | Zoological Society of Japan |
| Journal Title: | Zoological science |
| Volume: | 32 |
| Issue: | 4 |
| Start Page: | 405 |
| End Page: | 417 |
| Publisher DOI: | 10.2108/zs140251 |
| PMID: | 26245229 |
| Abstract: | 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/62716 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 柁原 宏
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