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Adelieledone, a new genus of octopodid from the Southern Ocean

Allcock, A.L.; Hochberg, F.G.; Rodhouse, P.G.; Thorpe, J.P.. 2003 Adelieledone, a new genus of octopodid from the Southern Ocean. Antarctic Science, 15 (4). 415-424. 10.1017/S0954102003001512

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Abstract/Summary

The syntypes of the endemic Southern Ocean octopodid Pareledone polymorpha (Robson, 1930) were re-examined and measurements, counts and indices are presented. The two forms described by Robson, namely oblonga and affinis, are determined to have no taxonomic validity. The species polymorpha shows morphological similarities with Pareledone adelieana (Berry, 1917) but differs in relative arm lengths, sucker counts, external colouration and size at maturity. Both species are transferred to the new genus Adelieledone, which is separated from the genus Pareledone s.s. by the transverse ridges in the ligula groove of the hectocotylus, the sharp tip of the lower beak, the enlarged posterior salivary glands, the absence of stylets and by skin sculpture, especially by the presence of two longitudinal integumentary ridges on the dorsal mantle. A new species, Adelieledone piatkowski, is described from the Antarctic Peninsula. Beak morphology can discriminate the genera in predator studies.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1017/S0954102003001512
Programmes: BAS Programmes > Antarctic Science in the Global Context (2000-2005) > Dynamics and Management of Ocean Ecosystems
ISSN: 09541020
Additional Information. Not used in RCUK Gateway to Research.: Copyright © Antarctic Science Ltd 2003
Additional Keywords: Cephalopods; Taxonomy;
NORA Subject Terms: Marine Sciences
Biology and Microbiology
Zoology
Date made live: 13 Aug 2010 12:27
URI: http://nora.nerc.ac.uk/id/eprint/10127

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