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Morphological and Genetic Characterization of the First Species of Thalassodrilides (Annelida: Clitellata: Naididae: Limnodriloidinae) from Japan
- Source :
- Species Diversity. 21:117-125
- Publication Year :
- 2016
- Publisher :
- Japanese Society of Systematic Zoology, 2016.
-
Abstract
- A species of marine limnodriloidine oligochaete, Thalassodrilides cf. briani Erseus, 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 Erseus, 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).
- Subjects :
- Naididae
education.field_of_study
biology
Phylogenetic tree
Ecology
Clitellata
Population
Zoology
Ribosomal RNA
biology.organism_classification
Molecular phylogenetics
Animal Science and Zoology
Taxonomy (biology)
Internal transcribed spacer
education
Ecology, Evolution, Behavior and Systematics
Subjects
Details
- ISSN :
- 21897301 and 13421670
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- Species Diversity
- Accession number :
- edsair.doi...........1095546a83875b06ab7387c2d317992c