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SYNCHRONIZATION OF FUNCTION IN THE FOREGUT OF THE BLOWFLY PHORMIA REGINA (DIPTERA: CALLIPHORIDAE) DURING THE CROP-EMPTYING PROCESS1

Published online by Cambridge University Press:  31 May 2012

Alan J. Thomson
Alan J. Thomson
Affiliation:
Institute of Animal Resource Ecology, University of British Columbia, Vancouver
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Abstract

The sequential mode of operation of the various valves and pumps in the foregut of the blowfly Phormia regina Meigen is described for the crop-emptying process. The results of the study are discussed in relation to the results of Gelperin, who showed that the rate of crop emptying was determined by the crop volume and the blood solute concentration. A mechanism by which synchronization of function may be achieved, based on the results of Nagai, and Thomson and Holling, is proposed, i.e. synchronization depends on the activity of stretch-sensitive muscle fibres.

Type
Articles
Information
The Canadian Entomologist , Volume 107 , Issue 11 , November 1975 , pp. 1193 - 1198
Copyright
Copyright © Entomological Society of Canada 1975

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