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EVALUATION OF THE INSECT GROWTH REGULATORS METHOPRENE AND DIFLUBENZURON AGAINST FLOODWATER MOSQUITOES (DIPTERA: CULICIDAE) IN SOUTHWESTERN ONTARIO1

Published online by Cambridge University Press:  31 May 2012

C. S. Rodrigues  and
R. E. Wright
C. S. Rodrigues
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

In field trials conducted at Guelph, Ont., methoprene (Altosid® SR-10) at 0.028 kg AI/ha (0.025 lb AI/ac) effectively controlled spring Aedes species following treatment of third- and fourth-instar larvae. However, when treated in the first to third instar, only partial control was obtained. The formulation remained active in the pools for 13 days during which time the average temperature was < 20°C. Methoprene also effectively controlled early-summer Aedes vexans (Meigen) after treatment of fourth-instar larvae. Diflubenzuron (Dimilin® 25% WP) at 0.022 kg AI/ha and 0.045 kg AI/ha (0.02 and 0.04 lb AI/ac) was effective against spring Aedes species following treatment of third-instar larvae.

Type
Articles
Information
The Canadian Entomologist , Volume 110 , Issue 3 , 01 March 1978 , pp. 319 - 324
Copyright
Copyright © Entomological Society of Canada 1978

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