Worm on worm: Two rare genera of Calamyzinae (Annelida, Chrysopetalidae), with a description of new species

Naoto Jimi; Shinji Tsuchida; Hiromi Kayama Watanabe; Yasuhiko Ohara; Hiroyuki Yokooka; Sau Pinn Woo; Yoshihiro Fujiwara

doi:10.1016/j.parint.2022.102619

Worm on worm: Two rare genera of Calamyzinae (Annelida, Chrysopetalidae), with a description of new species

Parasitol Int. 2022 Oct:90:102619. doi: 10.1016/j.parint.2022.102619. Epub 2022 Jun 28.

Authors

Naoto Jimi¹, Shinji Tsuchida², Hiromi Kayama Watanabe³, Yasuhiko Ohara⁴, Hiroyuki Yokooka⁵, Sau Pinn Woo⁶, Yoshihiro Fujiwara²

Affiliations

¹ Sugashima Marine Biological Laboratory, Graduate School of Science, Nagoya University, Toba, Mie 517-0004, Japan; Centre for Marine & Coastal Studies, Universiti Sains Malaysia 11800 USM, Penang, Malaysia. Electronic address: beniimo7010@gmail.com.
² Research Institute for Global Change (RIGC), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa 237-0061, Japan.
³ X-STAR, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa 237-0061, Japan.
⁴ Research Institute for Marine Geodynamics (IMG), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa 237-0061, Japan; Hydrographic and Oceanographic Department of Japan, 3-1-1 Kasumigaseki, Chiyoda, Tokyo 100-8932, Japan; Department of Earth and Planetary Sciences, Nagoya University, Furocho, Chikusa, Nagoya 464-8601, Japan.
⁵ Institute of Environmental Ecology, IDEA Consultants, Inc., Yaizu, Shizuoka 421-0212, Japan.
⁶ Centre for Marine & Coastal Studies, Universiti Sains Malaysia 11800 USM, Penang, Malaysia.

PMID: 35777655
DOI: 10.1016/j.parint.2022.102619

Abstract

Marine annelids in the subfamily Calamyzinae (family Chrysopetalidae) are either symbiotic or free-living forms that have been mainly reported from deep-sea chemosynthetic environments. Symbiotic calamyzines predominantly live in the mantle cavity of bivalves distributing at hydrothermal vents or methane seeps except for two species inhabiting the epidermis of polychaetes and octopuses. In this study, we describe a new species, Calamyzas crambon sp. nov., from Japan and report a new record of Nautiliniella calyptogenicola from the Mariana Trench. We also provide the phylogenetic position of the two species within Chrysopetalidae based on four gene markers (COI, 16S, 18S, and H3).

Keywords: Marine invertebrates; Pacific Ocean; Parasite; Phylogeny; Polychaeta; Taxonomy.

MeSH terms

Animals
Annelida* / genetics
Bivalvia*
Japan
Phylogeny
Polychaeta*