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1 results

  • Spatial distribution of Antarctic shrimps (Crustacea: Decapoda) by underwater photography

  • Julian Gutt, M. Gorny, W. Arntz
  • Journal:
    Antarctic Science / Volume 3 / Issue 4 / December 1991
    Published online by Cambridge University Press:
    14 May 2004, pp. 363-369

  • Three species of shrimps (Notocrangon antarcticus, Chorismus antarcticus, Nematocarcinus lanceopes) were investigated in the south-eastern Weddell Sea using of underwater photography. Maximum densities of c. 100 specimens per 100 m2 were found for N. antarcticus on the continental shelf (200–600 m) and for N. lanceopes on the slope (800–1200 m). Small-scale dispersion patterns and size-frequency distributions were analyzed within dense concentrations. These direct observations indicate that the behaviour of the three species is adapted to different habitats with Chorismus distribution correlated with that of sponges and Notocrangon with base sediment.