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Polar Biology

, Volume 23, Issue 2, pp 106–112 | Cite as

Day and night mesopelagic fish assemblages off the Kerguelen Islands (Southern Ocean)

  • G. Duhamel
  • P. Koubbi
  • C. Ravier
ORIGINAL PAPER

Abstract

Mesopelagic fish assemblages were investigated in the Polar Frontal Zone off the Kerguelen Islands during summer 1995, in parallel with a king penguin tracking study. During the day, the upper offshore water layers (0–200 m) have low potential prey diversity and abundance with only three fish species: a lanternfish, Krefftichthys anderssoni, a member of the Muraenolepididae, Muraenolepis marmoratus, and the early stages of the nototheniid, Lepidonotothen squamifrons. The mesopelagic fish community, including the typical myctophids, first appears in the deeper layer (300 m). At night, the surface layer (50 m) is invaded by the mesopelagic Myctophidae Electrona antarctica, Gymnoscopelus braueri, G. piabilis, G. fraseri, G. nicholsi, Protomyctophum bolini and P. tenisoni. Deeper (>100 m), a cline of species assemblages from the coast to offshore is observed.

Keywords

Surface Layer Fish Species Deep Layer Water Layer Southern Ocean 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • G. Duhamel
    • 1
  • P. Koubbi
    • 2
  • C. Ravier
    • 1
  1. 1.Museum national d'histoire naturelle, Laboratoire d'ichtyologie générale et appliquée, 43, rue Cuvier, F-75231 Paris cedex 05, France e-mail: duhamel@mnhn.fr; Fax: +33-1-40793771FR
  2. 2.UPRES-A “ELICO”– Ichtyoécologie Marine, Université du Littoral Côte d'Opale, 17 avenue Blériot, BP 699, F-62228 Calais Cedex, FranceFR

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