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Science 8 October 1982:
Vol. 218. no. 4568, pp. 158 - 160
DOI: 10.1126/science.218.4568.158
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Articles

Calanoid Copepods, Feeding Currents, and the Role of Gravity

J. RUDI STRICKLER 1

1 Australian Institute of Marine Science, Townsville M.S.O. Q. 4810, Australia

Feeding currents of free-swimming calanoid copepods, observed through an expanded krypton laser beam and a back-focus dark-field optical system, show that these planktonic animals generate a double shear field to help in detecting food. The interrelation between flow field, perception of food items, and body orientation explains why these animals are generally negatively buoyant.

Submitted on September 2, 1981
Revised on December 16, 1981


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