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Journal of Experimental Biology 30,238-242 (1953)
Published by Company of Biologists 1953

Relation of the Rate of Antennal Movement in Daphnia to the Number of Eggs Carried in the Brood Pouch

H. MUNRO FOX 1 and YVONNE MITCHELL 1

1 Bedford College, University of London

The rate of antennal swimming movements of Daphnia is proportional to the number of eggs or young carried in the brood pouch. An increased rate of antennal movement is not a direct result of the better nutrition which produces more eggs. The increased swimming rate may be necessary to counteract a change in centre of gravity caused by the posterior position of the brood pouch containing eggs.

Submitted on November 11, 1952






© The Company of Biologists Ltd 1953