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Polar Biology

, Volume 17, Issue 4, pp 350–357 | Cite as

Notes of food selection in the Antarctic krill, Euphausia superba

  • Krzysztof W. Opaliński
  • Krystyna Maciejewska
  • Ludmila V. Georgieva
ORIGINAL PAPER

Abstract

Analysis of the gut contents of Euphausia superba and of the phytoplankton composition in the area of the animals catchment served as a basis for answering the question whether or not E. superba is capable of food selection. It was found that the diatom Thalassiosira is preferred by E. superba as a food item and small pennate diatoms, Nitzschia, and Navicula are only tolerated as food. Other algae taxa, such as Tropidoneis, Dactyliosolen, Chaetoceros, and Gyrodinium, are clearly avoided. With respect to phytoplankton cell size, E. superba prefers cells with a length of 20–40 μm and cells larger than 70 μm are rejected. Trophic conditions only slightly affect the food selection of E. superba.

Keywords

Phytoplankton Cell Size Food Item Trophic Condition Navicula 
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 1997

Authors and Affiliations

  • Krzysztof W. Opaliński
    • 1
  • Krystyna Maciejewska
    • 2
  • Ludmila V. Georgieva
    • 3
  1. 1.Institute of Ecology, Polish Academy of Sciences, Dziekanów Leśny, 05 092 Lomianki, PolandPL
  2. 2.Marine Fishery Institute, u. Kołłataja 1, 81 332 Gdynia, PolandPL
  3. 3.Institute of Biology of the Southern Seas, Ukrainian Academy of Sciences, 2 Nakhimova Avenue, 335011 Sevastopol, Crimea, UkraineUA

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