Laboratory experiments on the control of three species of fruit flies (Tephritidae)
Author AffiliationsWalter Ebeling was Associate Professor of Entomology and Entomologist in the Experiment Station.
Hilgardia 21(17):515-562. DOI:10.3733/hilg.v21n17p515. February 1953.
… on control of the melon fly and the Mediterranean and oriental fruit flies included tests on a total of 26 insecticides. Equipment designed on the venturi principle facilitated application of aerosols, dusts, and sprays, for both space and residue treatments.
Factors that might influence the results of treatments were found to be species, adult age, and sex of the flies and, in residue treatments, period of contact with residues, anesthetization, and number of flies per cage. The last two and the species seem to operate through effects on fly activity.
Of the insecticides tested as wettable powders in residue treatment, the thirteen most effective were parathion, dieldrin, EPN, heptachlor, lindane, aldrin, dilan, chlordane, toxaphene, methoxychlor, DFDT, DDT, and DDD. In other formulations and in space treatment the order was somewhat different.
Dosages of DDT and parathion residues that gave less than 100 per cent kill had little effect on the subsequent mortality and egg laying of melon flies that survived the treatment.
Of 17 weftable-powder residues tested, dieldrin retained effectiveness longest—about 2 weeks—on exposure to sun and rain. When sheltered from sun and rain, the residues from dieldrin, EPN, and parathion sprays resulted in 100 per cent kills of melon flies and oriental fruit flies more than 4 months after treatment.
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