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Contribution to the biology of squid in the Prydz Bay region, Antarctica

Published online by Cambridge University Press:  12 May 2004

C.C. Lu  and
R. Williams
C.C. Lu
Affiliation:
Department of Invertebrate Zoology, Museum of Victoria, 328 Swanston Street, Melbourne, Australia 3000
R. Williams
Affiliation:
Antarctic Division, Channel Highway, Kingston, Tasmania, Australia 7050
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Abstract

The teuthoid fauna of the Prydz Bay region of the Southern Ocean (Indian Ocean sector) has been studied based on the material collected from 1981–1991 using a rectangular midwater trawl (RMT-8), pelagic trawl (IYGPT), and bottom trawl. Eight species of squid have been recognized: Brachioteuthis sp., Kondakovia longimana, Bathyteuthis abyssicola, Psychroteuthis glacialis, Alluroteuthis antarcticus, Mastigoteuthis psychrophila, Mesonychoteuthis hamiltoni and Galiteuthis glacialis. Size frequency distribution, geographical and vertical distributions of each species as well as diets of common species are analysed. There is no evidence of a diel vertical migration but ontogenetic descent appears to occur in P. glacialis and G. glacialis. Antarctic krill, Euphausia superba and the Antarctic silverfish, Pleuragramma antarcticum are important prey for most species with cannibalism occurring in P. glacialis, A. antarcticus and M. hamiltoni. Equations for calculating total weight from mantle length, and mantle length and total weight from upper and lower rostral length are provided for B. abyssicola, P. glacialis, A. antarcticus, M. psychrophila, and G. glacialis.

Keywords

squiddietbeakSouthern OceanPrydz Bay
Type
Research Article
Information
Antarctic Science , Volume 6 , Issue 2 , June 1994 , pp. 223 - 229
Copyright
© Antarctic Science Ltd 1994

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