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Cephalopod Fauna of the Scotia Sea at South Georgia: Potential for Commercial Exploitation and Possible Consequences

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Antarctic Ecosystems

Summary

A collection of cephalopods from the British Antarctic Survey’s Offshore Biological Programme is described and the cephalopod prey of vertebrate predators at South Georgia is reviewed. Comparison of these data indicates that predators catch larger specimens and a greater diversity of species than nets. There are also differences between samples from different types of net. The RMT 25, the largest research net used to date, has caught most of the species thought to occur in the Scotia Sea but specimens are generally smaller than those taken by predators. Cephalopods which are thought to have potential commercial value are Martialia hyadesi, Kondakovia longimana, Moroteuthis ingens, M. knipovitchi, M. robsoni and Gonatus antarcticus. Other possibilities include species of brachioteuthid, psychroteuthid and neoteuthid. It is likely that Antarctic stocks will be sensitive to exploitation and liable to dramatic fluctuations if overfished. The possible consequences of commercial exploitation of cephalopods for the reproductive success of the vertebrate predators, which prey on cephalopods in the Scotia Sea, are examined.

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Author information

Authors and Affiliations

  1. British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK

    P. G. Rodhouse

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  1. P. G. Rodhouse
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Editors and Affiliations

  1. Department of the Arts, Sport, the Environment, Tourism and Territories, Australian Antarctic Division, Channel Highway, Kingston, Tasmania, 7050, Australia

    K. R. Kerry

  2. Alfred-Wegener-Institut für Polar- und Meeresforschung, Columbusstraße, 2850, Bremerhaven, Germany

    G. Hempel

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© 1990 Springer-Verlag Berlin Heidelberg

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Rodhouse, P.G. (1990). Cephalopod Fauna of the Scotia Sea at South Georgia: Potential for Commercial Exploitation and Possible Consequences. In: Kerry, K.R., Hempel, G. (eds) Antarctic Ecosystems. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84074-6_33

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  • DOI: https://doi.org/10.1007/978-3-642-84074-6_33

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-84076-0

  • Online ISBN: 978-3-642-84074-6

  • eBook Packages: Springer Book Archive

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