No CrossRef data available.
Article contents
First occurrence of ophiuroid-parasitic genus Ophieulima (Mollusca: Gastropoda: Eulimidae) in the North Pacific Ocean
Published online by Cambridge University Press: 05 March 2024
Abstract
A eulimid gastropod of the genus Ophieulima, parasitic on the disc of the ophiactid brittle star Ophiactis dyscrita, was collected from 256–343 m deep off Kanagawa, central Japan. This represents the first record of the genus from Japanese waters and even from the North Pacific Ocean. Here we describe it as Ophieulima yoshiharai n. sp. The generic assignment is justified by its conchological characters including (1) a small, conical shape with convex teleoconch whorls, (2) many fine growth lines and some strong growth pause scars on the teleoconch, (3) a well-developed, twisted columella, and (4) a multispiral, brownish transparent protoconch. Ophieulima yoshiharai n. sp. is distinguishable from the three (two named and one undescribed) extant, as well as two fossil congeners by its slender shell with the length of 2.1 times larger than width, a small aperture and a protoconch of 3.5 whorls. The new species is also characterized by its bathymetric distribution, which is shallower than the extant species of Ophieulima. On the other hand, the hosts of Ophieulima species are so far restricted to ophiuroids of the genus Ophiactis and the three named species have mostly been found attached to the lateral and/or dorsal sides of the host's disc, suggesting their similar parasitic ecology.
- Type
- Marine Record
- Information
- Copyright
- Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of Marine Biological Association of the United Kingdom
References
Bouchet, P and Warén, A (1986) Revision of the Northeast Atlantic bathyal and abyssal Aclididae, Eulimidae, Epitoniidae (Mollusca, Gastropoda). Bollettino Malacologico Supplemento 2, 299–576.Google Scholar
Clark, HL (1911) North Pacific ophiurans in the collection of the United States National Museum. Smithsonian Institution United States National Museum Bulletin 75, 1–302.Google Scholar
Dgebuadze, PY (2014) Symbiosis between gastropods (Gastropoda, Eulimidae) and echinoderms (Echinodermata). Povolzhskiy Journal of Ecology 13, 480–487.Google Scholar
Hoffman, L, van Heugten, B and Lavaleye, MSS (2011) Gastropoda (Mollusca) from the Rockall and Hatton Banks, northeastern Atlantic Ocean. 3. Miscellanea Malacologica 5, 23–52.Google Scholar
Landau, BM and Mulder, H (2022) Additions and corrections to the gastropod fauna of the Pliocene of Estepona, south-western Spain, 5. Basteria 86, 153–173.Google Scholar
Lozouet, P (1999) Nouvelles espèces de gastéropodes (Mollusca: Gastropoda) de l'Oligocène et du Miocène inférieur de l'Aquitaine (Sud-Ouest de la France). Partie 2. Cossmanniana 6, 1–68. [in French]Google Scholar
Matsumoto, H (1917) A monograph of Japanese Ophiuroidea, arranged according to a new classification. Journal of the College of Science, Imperial University, Tokyo 38, 1–408.Google Scholar
O'Reilly (2016) Identification of deep-Sea Asteroidea and Ophiuroidea (Phylum Echinodermata) from two of Ireland's submarine canyon systems, by use of morphological and molecular techniques (Bachelor thesis). The University of Galway, Galway, Ireland.Google Scholar
Romani, L, Bartolini, S, Giusti, F and Sbrana, C (2014) Ophieulima (Gastropoda: Caenogastropoda: Eulimidae): a new genus for the Mediterranean Sea. Marine Biodiversity Records 7, e131.CrossRefGoogle Scholar
Souza, LS, Pimenta, AD and Barros, JCN (2021) Revision of the deep-sea Eulimidae (Gastropoda, Caenogastropoda) from off Northeast Brazil. Zootaxa 4927, 451–504.CrossRefGoogle ScholarPubMed
Takano, T and Goto, R (2021) Molecular and morphological systematics of the crinoid-parasitic snail genus Goodingia (Mollusca: Caenogastropoda: Eulimidae) with new insights into intrafamilial phylogenetic relationships. Marine Biodiversity 51, 5.CrossRefGoogle Scholar
Takano, T and Kano, Y (2014) Molecular phylogenetic investigations of the relationships of the echinoderm-parasite family Eulimidae within Hypsogastropoda (Mollusca). Molecular Phylogenetics and Evolution 79, 258–269.CrossRefGoogle ScholarPubMed
Takano, T, Kano, Y, Mogi, T and Okanishi, M (2023) Fusceulimoides kohtsukai gen. et sp. nov., a minute eulimid gastropod parasitic on the little brittle star Ophiactis savignyi in central Japan. Zoological Science 40, 64–69.CrossRefGoogle Scholar
Warén, A (1980) Descriptions of new taxa of Eulimidae (Mollusca, Prosobranchia), with note on some previously described genera. Zoologica Scripta 9, 283–306.CrossRefGoogle Scholar
Warén, A (1981) Eulimid gastropods parasitic on echinoderms in the New Zealand region. New Zealand Journal of Zoology 8, 313–324.CrossRefGoogle Scholar
Warén, A (1983a) A generic revision of the family Eulimidae (Gastropoda, Prosobranchia). Journal of Molluscan Studies Supplement 13, 1–96.CrossRefGoogle Scholar
Warén, A (1983b) An anatomical description of Eulima bilineata Alder with remarks on and a revision of Pyramidelloides Nevill (Mollusca, Prosobranchia, Eulimidae). Zoologica Scripta 12, 273–294.CrossRefGoogle Scholar
Warén, A and Sibuet, M (1981) Ophieulima (Mollusca, Prosobranchia), a new genus of ophiuroid parasites. Sarsia 66, 103–107.Google Scholar