A study on octopodids from the eastern Weddell Sea, Antarctica.

Allcock, A. Louise, Piatkowski, Uwe , Rodhouse, Paul G. K. and Thorpe, John P. (2001) A study on octopodids from the eastern Weddell Sea, Antarctica. Polar Biology, 24 . pp. 832-838. DOI 10.1007/s003000100288.

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Abstract

A comprehensive study of octopodids in the Weddell Sea was conducted during cruise ANT XIII/3 of RV "Polarstern". The study yielded eight species of incirrate octopodids, three of which were undescribed. There appeared to be no differences in octopodid species assemblage in the two sampling areas (Kapp Norvegia and south of Drescher Inlet), supporting the theory that there is a single macrobenthic assemblage on the eastern shelf of the Weddell Sea. Six of the octopodid species belonged to the genus Pareledone, illustrating the extensive radiation of this endemic genus within the Southern Ocean. The fragmented nature of suitable habitats and disturbance caused by glaciation cycles are proposed as mechanisms for this radiation. Comparative data illustrate that both the number of octopodid species present and their abundance are greater at higher latitudes than close to the Antarctic Polar Frontal Zone.

Document Type: Article
Keywords: R.V. Polarstern
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1007/s003000100288
ISSN: 0722-4060
Expeditions/Models/Experiments:
Date Deposited: 18 Feb 2008 17:25
Last Modified: 24 May 2016 09:49
URI: http://oceanrep.geomar.de/id/eprint/5371

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