Journal of Economic Entomology (1999) 92, 695-699

Frank H. Arthur (1999)
Effect of temperature on residual toxicity of cyfluthrin wettable powder
Journal of Economic Entomology 92 (3), 695-699
Abstract: Red flour beetles, Tribolium castaneum (Herbst), were exposed for 0.5, 1, and 2 h at 20, 25, 30, and 35°C on concrete treated with 100 mg/m² 20% (AI) cyfluthrin wettable powder (WP) at biweekly intervals for 8 wk. Knockdown typically averaged 80-100% at all exposure intervals and temperatures until week 8, with no significant differences among temperatures. Although the overall F-test indicated a significant difference in survival among the 3 exposure intervals, the only significant difference detected was at week 4. After week 0, beetles exposed at 25, 30, and 35°C began to recover from knockdown, and by week 6 survival was at least 90%, with 1 exception. Survival of beetles exposed at 20°C was 0.0 and 7.5% for weeks 0 and 2, and <30% for weeks 4, 6, and 8. Beetles were able to tolerate exposure to cyfluthrin WP at successively lower temperatures as residues aged on the concrete.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Frank H. Arthur

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tribolium castaneum