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    Feeding behaviour of Antarctic krill on salps

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    Numéro du document:
    WG-EMM-95/57
    Auteur(s):
    Takahashi, Y., Kawaguchi, S.
    Point(s) de l'ordre du jour
    Résumé

    Feeding behavior of Antarctic krill (Euphausia superba) on salps was observed through onboard experiments during 1994/95 Kaiyo Maru Antarctic Ocean research cruise. Feeding rate was more than 1 salp/krill/day. Among 4 items of ethanol extracts; salps, phytoplankton, krill, and polychaets, krill preferred salps best. This evidence implies that the substances extracted from salps were most attractive to krill. The result of our experiment might indicate a tight ecological relationship between krill and salps. Since salps have ability to ingest wide size range of particles, there might also be a possibility of link between microbial loop and krill through salps.