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

• DOI: 10.12782/sd.21.2.117
• Publication Date: 2017-01-17T08:16:25Z
• Authors: Takaaki Torii; Christer Erséus; Svante Martinsson; Mana Ito
• Keywords: Clitellata

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