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Female description of the hydrothermal vent cephalopod Vulcanoctopus hydrothermalis

Published online by Cambridge University Press:  25 March 2008

A.F. González ,
A. Guerra ,
S. Pascual  and
M. Segonzac
A.F. González*
Affiliation:
ECOBIOMAR, Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
A. Guerra
Affiliation:
ECOBIOMAR, Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
S. Pascual
Affiliation:
ECOBIOMAR, Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
M. Segonzac
Affiliation:
IFREMER, Centre de Brest, Laboratoire Environnement Profond, BP 70, 29280-Plouzané, France
*
Correspondence should be addressed to: A.F. González ECOBIOMARInstituto de Investigaciones Marinas (CSIC)Eduardo Cabello 6, 36208 VigoSpain email: afg@iim.csic.es
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Abstract

During biological sampling of hydrothermal vents on the East Pacific Rise, the manned submersible ‘Nautile’ caught the first female of the endemic cephalopod Vulcanoctopus hydrothermalis. The specimen caught at the vent site Gromit (21°33 66′S, 114°17 98′W at 2832 m depth) is described here in detail and an amended diagnosis of the species proposed. The external morphology, measurements and internal structure resemble that of males of this species. One of the most remarkable characters is the lack of spermathecae and the absence of apical filaments in the oocytes to provide a site for sperm storage. It is suggested that some species of the genera Benthoctopus and Bathypolypus would be the most suitable octopod ancestor of V. hydrothermalis.

Keywords

hydrothermal ventcephalopodsVulcanoctopus hydrothermalisfemale description
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 88 , Issue 2 , March 2008 , pp. 375 - 379
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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