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The ecology and reproductive biology of Cherbonniera utriculus and Molpadia blakei from the N.E. Atlantic

Published online by Cambridge University Press:  11 May 2009

P. A. Tyler
Affiliation:
Department of Oceanography and Marine Research Group, School of Biological Sciences, University of Wales, Swansea SA2 8PP
D. S. M. Billett
Affiliation:
Institute of Oceanographic Sciences, Wormley, Godalming, Surrey GU8 5UB
J. D. Gage
Affiliation:
Scottish Marine Biological Association, Dunstaffnage Marine Research Laboratory, P.O. Box 3, Oban, Argyll PA34 4AD

Extract

The Molpadiida is an order of sea cucumbers identified by their stout body, the posterior region narrowing to simulate a tail and the absence of tubefeet. Typically they inhabit muddy environments from shallow water to abyssal depths. In the past the great variability in the taxonomic characters of this order has led to the formation of many genera and species (Heding, 1931, 1935), but more recently it has become apparent that many diagnostic characters change markedly during the life history of these holothurians and as a result fewer species are now recognised (Deichmann, 1940; Pawson, 1977). In a revision of the Atlantic molpadiids Deichmann (1940) recorded just three species from the north-east Atlantic (Molpadia blakei, M. musculus and Hedingia albicans) with a further three species from the Arctic Ocean and Norwegian Sea (M. arctica, M. borealis and Eupyrgus scaber). To these Sibuet (1974) added the new genus and species Cherbonniera utriculus found in the Bay of Biscay.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1987

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