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Hydrobiological Journal
SJR: 0.227 SNIP: 0.901 CiteScore™: 0.5

ISSN Imprimer: 0018-8166
ISSN En ligne: 1943-5991

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v35.i6.130
pages 153-161

Nutrition of Black Sea Ctenophore Mnemiopsis Depending on Zooplankton Composition

V. E. Zaika
A.O. Kovalevsky Institute of Biology of the Southern Seas, National Academy of Sciences of Ukraine, 2, Nakhimov Prosp., 99011 Sevastopol, Crimea, Ukraine
N. K. Revkov
Institute of the Biology of the Southern Seas, National Academy of Sciences of Ukraine Sevastopol, Ukraine

RÉSUMÉ

The content of stomach of 320 Mnemiopsis leidyi specimens was investigated in July 1992 at 26 stations in the Black Sea. The data on structures and concentration of mesozooplankton were used in analysis of the connection of Mnemiopsis feeding and conditions of the fodder base. A list of food objects is given. The comparison of quantitative feeding parameters in regions of different food abundance and at separate stations is conducted. Close connection of feeding parameters with food abundance is shown. Pleopis, Bivalvia larvae, and Copepoda were the most numerous in ctenophore's stomachs, They differ by ctenophore capturing efficiency due to different ability to avoid contact with Mnemiopsis tentacles. The distinctions in feeding intensity of specimens of different sizes and in different time of the day are shown.


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