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INDUCTION AND TERMINATION OF DIAPAUSE IN THE FACE FLY, MUSCA AUTUMNALIS (DIPTERA: MUSCIDAE), IN THE LABORATORY

Published online by Cambridge University Press:  31 May 2012

E. T. N. Caldwell  and
R. E. Wright
E. T. N. Caldwell
Affiliation:
Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1
R. E. Wright
Affiliation:
Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1
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Abstract

Diapause induction studies showed that face flies, Musca autumnalis De Geer, from a recently established colony, entered diapause more readily than those that had been colonized for many years. Photoperiods of less than 16 h of light induced diapause at 16° and 27 °C but more flies entered diapause at 16°C. Maximum numbers of flies entered diapause under total darkness at 16°C, but the critical photoperiod corresponding to natural periods of daylight in late summer was 15 h of light at 16°C. Diapause termination studies indicated that 4 months’ exposure to 5 °C under total darkness was required for the termination of diapause.

Type
Articles
Information
The Canadian Entomologist , Volume 110 , Issue 6 , 01 June 1978 , pp. 617 - 622
Copyright
Copyright © Entomological Society of Canada 1978

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