Uptake and Persistence of Metepa and Hempa in the House Fly1,2

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The uptake and persistence of metepa and hempa in Musca domesticaL. was determined by allowing the insects to feed on a treated sugar bait. Seventy-two hours after a 1-hour exposure to the 0.8% metepa bait, 33.6% of the compound picked up by the females and 3.72% of that picked up by the males were still present in the flies or in their containers. When house flies were tested in a simulated field trial, they consumed enough 1.0% metapa bait to become sterile, even though they were offered a supplementary diet of untreated food; the amounts recovered ranged from 0.28 to 5.64µg in males and from 0.14 to 15.0µg in females. When only treated bait was available, the metepa ranged from 0.54 to 6.38µg in males and from 0.36 to 15.2µg in females. In similar field tests with hempa bait, the captured flies contained 0.04-4.67µg of hempa.

Document Type: Research Article

Publication date: June 1, 1968

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