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Biol Bull 173: 299-310. (October 1987)
© 1987 Marine Biological Laboratory
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THE FEEDING BEHAVIOR OF PARANOPHRYS CARNIVORA (CILIATA, PHILASTERIDAE)

DAVID KAHAN 1, THEODORA BAR-EL 1, SAMSON LEIKEHMACHER 2, SAMUEL OMAN 2, and NORBERT WILBERT 3

1 Department of Zoology, Hebrew University of Jerusalem, Jerusalem, Israel
2 Department of Statistics, Hebrew University of Jerusalem, Jerusalem, Israel
3 Zoologisches Institut, Poppelsdorfer Schloss, Bonn, West Germany

The marine ciliate Paranophrys carnivora, isolated from the Mediterranean coast of Israel, was found to feed on a varied diet of bacteria, algae, and living and non-living tissues. Chlorococcum sp. and Dunaliella parva, the algal species on which P. carnivora grew best, did not elicit a chemosensory response; tissues and bacteria did. In experiments on stationary phase ciliates, betaine, choline, L-histidine, and trimethylamine oxide elicited a positive chemosensory response at concentrations as low as l0-6 M to l0-3 M.

Submitted on February 9, 1987
Accepted on July 22, 1987






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Copyright © 1987 by the Marine Biological Laboratory.