Affordable Access

Unilateral ciliary reversal and motor responses during prey capture by the ctenophore Pleurobrachia.

Authors
  • Tamm, S L
  • Moss, A G
Type
Published Article
Journal
The Journal of experimental biology
Publication Date
Jan 01, 1985
Volume
114
Pages
443–461
Identifiers
PMID: 4009107
Source
Medline
License
Unknown

Abstract

High-speed cinematography of feeding Pleurobrachia revealed a stereo-typed sequence of ciliary motor responses underlying the feeding behaviour of this ctenophore. Prey capture by a tentacle first elicited high frequency beating in all comb rows, propelling the animal forward at a rapid speed for several seconds. This was followed by a brief period of inactivity on some or all comb rows. Then comb rows adjacent to the catching tentacle beat in the reverse direction, causing the ctenophore to spin rapidly toward this side and sweeping the prey-catching tentacle to the opened mouth, which bent towards it. After engulfing the prey, the animal slowly swam forward to re-set the relaxed tentacles as a fishing net. The patterns, timing, onset and coordination of these ciliary responses, particularly the unilateral reversal of comb rows on the catching side, are analysed with respect to possible conducting pathways mediating this behaviour.

Report this publication

Statistics

Seen <100 times