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A new Sphaeronella species (Copepoda: Siphonostomatoida: Nicothoidae) parasitic on Euphilomedes sp. (Ostracoda: Myodocopa: Philomedidae) from Hokkaido, Japan, with an 18S molecular phylogeny
| Title: | A new Sphaeronella species (Copepoda: Siphonostomatoida: Nicothoidae) parasitic on Euphilomedes sp. (Ostracoda: Myodocopa: Philomedidae) from Hokkaido, Japan, with an 18S molecular phylogeny |
| Authors: | Kakui, Keiichi Browse this author →KAKEN DB | | Munakata, Mizuho Browse this author |
| Issue Date: | Apr-2023 |
| Publisher: | Springer |
| Journal Title: | Systematic Parasitology |
| Volume: | 100 |
| Issue: | ２ |
| Start Page: | 121 |
| End Page: | 131 |
| Publisher DOI: | 10.1007/s11230-022-10075-z |
| PMID: | 36414830 |
| Abstract: | With about 80 species, Sphaeronella is the most species-rich genus in the copepod family Nicothoidae. To date, 20 named Sphaeronella species have been reported as ectoparasites on ostracod crustaceans. Here we describe Sphaeronella uyenoi sp. nov. parasitic on the philomedid ostracod Euphilomedes sp. collected from Akkeshi Bay, Hokkaido, Japan, northwestern Pacific. Sphaeronella uyenoi most closely resembles S. monothrix (Bowman & Kornicker, 1967), parasitic on the cylindroleberidid Parasterope pollex Kornicker in Bowman & Kornicker in the northwestern Atlantic, but differs from the latter in having (1) the submedian skeleton containing paired, strongly chitinized, Λ-shaped areas and paired wide oblong holes bearing a strongly chitinized fringe posteriorly, and (2) maxillipedal segment 3 with antero-subdistal serration. We determined partial sequences for the cytochrome c oxidase subunit I (COI) and 18S rRNA (18S) genes for S. uyenoi and constructed an 18S-based phylogenetic tree of copepods. In our tree, Nicothoidae was not monophyletic, and S. uyenoi was the sister taxon to Cancerilla sp. in Cancerillidae (ectoparasites on brittle stars). |
| Rights: | The final publication is available at link.springer.com |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/91431 |
| 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: 角井 敬知
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