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Endeolophos skeneae sp. nov. (Chromadoridae)—a free-living marine nematode epibiotically associated with deep-sea gastropod Skenea profunda (Skeneidae)

Published online by Cambridge University Press:  11 November 2010

Oleksandr Holovachov ,
Sven Boström ,
Nicole Reid ,
Anders Warén  and
Christoffer Schander
Oleksandr Holovachov*
Affiliation:
Department of Nematology, University of California–Riverside, Riverside, CA 92521, USA
Sven Boström
Affiliation:
Department of Invertebrate Zoology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden
Nicole Reid
Affiliation:
Department of Environmental Sciences, University of California–Riverside, Riverside, CA 92521, USA
Anders Warén
Affiliation:
Department of Invertebrate Zoology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden
Christoffer Schander
Affiliation:
Department of Biology, University of Bergen, Box 7800, NO-5020 Bergen, Norway Centre for Geobiology, Allégaten 41, NO-5007 Bergen, Norway
*
Correspondence should be addressed to: O. Holovachov, Department of Nematology, University of California–RiversideRiverside, CA 92521, USA email: [email protected]
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Abstract

A new species, Endeolophus skeneae sp. nov., epibiotically associated with the gastropod Skenea profunda, is described from light microscope and scanning electron microscope observations. The new species is characterized by homogeneous ornamentation of the cuticle with annules with very fine and numerous longitudinal ridges, equally distributed around the body, subcuticular discontinuity in cuticle pattern along the lateral sectors of the body, relatively long body (1.1–1.6 mm) and relatively long tail (141–188 μm, c' = 7.5–11.4), short (19–22 μm) L-shaped spicules with ventrally bent blade and simple plate-like gubernaculum without apophysis. Symbiotic associations between aquatic nematodes and molluscs are discussed, with special emphasis on Dreissena polymorpha, zebra mussels. It is suggested that nematodes find food and shelter in the mantle cavity of the bivalve molluscs, and in the umbilicus and aperture of the gastropods, but to reveal the exact mechanisms of symbiotic associations of nematodes with aquatic molluscs requires further research.

Keywords

East AtlanticEndeolophos skeneae sp. nov.GastropodaMolluscaNematodaSkenea profundasymbiosis
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 91 , Special Issue 2: Biodiversity and Taxonomy , March 2011 , pp. 387 - 394
Copyright
Copyright © Marine Biological Association of the United Kingdom 2010

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