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A new species of Malacoceros (Polychaeta: Spionidae) from Kick'em Jenny, a hydrothermally active submarine volcano in the Lesser Antilles Arc

Published online by Cambridge University Press:  25 July 2008

Jason R. Graff ,
James A. Blake  and
Karen F. Wishner
Jason R. Graff*
Affiliation:
University of Rhode Island, URI Bay Campus, South Ferry Road, Narragansett, RI 02882, USA
James A. Blake
Affiliation:
ENSR Marine & Coastal Center, 89 Water Street, Woods Hole, MA 02543USA
Karen F. Wishner
Affiliation:
University of Rhode Island, URI Bay Campus, South Ferry Road, Narragansett, RI 02882, USA
*
Correspondence should be addressed to: Jason R. Graff University of Rhode IslandGraduate School of Oceanography 200 South Ferry Road, Narragansett, RI 02882, US email: [email protected]
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Abstract

A new spionid polychaete, Malacoceros jennicus, is described from the crater of a hydrothermally active submarine volcano near Grenada in the Caribbean, Lesser Antilles Arc region. The new species is characterized by having prominent lateral frontal horns on the prostomium, paired eye spots, neurosetae that include simple capillaries, inferior sabre setae, numerous bidentate hooded hooks, and a pygidium bearing four digitiform anal cirri surrounding the anus. Worms were collected in regions of diffuse venting with a suction sampler deployed on an ROV. Specimens representing a range of sizes including sexually mature and reproductive individuals containing eggs and sperm were found. Stable isotope analysis of 13C and 15N indicate mixed feeding on photosynthetic and hydrothermal vent source material.

Keywords

spionidpolychaetenew speciesMalacoceros jennicushydrothermal ventKick'em JennyCaribbeansubmarine volcanoreproductionstable isotopes
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 88 , Issue 5 , August 2008 , pp. 925 - 930
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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