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Molecular evolutionary relationships of the octopodid genus Thaumeledone (Cephalopoda: Octopodidae) from the Southern Ocean

Published online by Cambridge University Press:  19 May 2008

J.M. Strugnell ,
M.A. Collins  and
A.L. Allcock
J.M. Strugnell*
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Rd, Cambridge CB3 0ET, UK Ecology and Evolutionary Biology, School of Biological Sciences, Queen's University Belfast, Belfast BT9 7BL, UK
M.A. Collins
Affiliation:
British Antarctic Survey, NERC, High Cross, Madingley Rd, Cambridge CB3 0ET, UK
A.L. Allcock
Affiliation:
Ecology and Evolutionary Biology, School of Biological Sciences, Queen's University Belfast, Belfast BT9 7BL, UK
*
*jan.strugnell@gmail.com
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Abstract

Recent trawling in the Southern Ocean has yielded individuals of a number of species of the deep sea octopod genus Thaumeledone. This paper provides the first molecular study of the genus, employing molecular sequences from five mitochondrial (12S rDNA, 16S rDNA, COI, COIII, cytochrome oxidase b) and a single nuclear gene (rhodopsin) and includes representatives of each of the known Southern Ocean species. Thaumeledone rotunda, believed to be circumpolar in distribution and found in relatively deep water is the sister taxa to T. gunteri, known only from South Georgia. A notable level of sequence variability was evident between a T. peninsulae individual recently captured from the Powell Basin, and two T. peninsulae individuals captured from the continental slope, north of the South Shetland Islands. This is likely to represent population level intraspecific variation within this species.

Keywords

Antarctic Peninsulaintraspecific variationoctopusScotia SeaSouth Georgia
Type
Research Article
Information
Antarctic Science , Volume 20 , Issue 3: BIOPEARL Cruise in the Scotia Sea , June 2008 , pp. 245 - 251
Copyright
Copyright © Antarctic Science Ltd 2008

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