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These reported data were obtained in a continuing series of tests of toxicants for use against tropical fruit flies of quarantine importance. The Caribbean fruit flies, Anastrephasuspensa (Loew), used in the tests were from the insect colony established at the Subtropical Horticulture Research Unit at Miami, Florida! Tests were done in empty commercial semitrailer vans (ca. 713 volume) located at various trailer and container leasing firms in the Miami area. One-wk-old adult flies were caged in fabricated, open-ended, screened, pint ice-cream containers (4 cages/test, ca. 200 flies/cage), and the cages were attached to three walls and the ceiling of the van. Insecticides were formulated (1) as dusts (HiSil 233 carrier) and propelled with CO2 gas; (2) as aerosols formulated with Freon or with water and propane/isobutane and released from aerosol pressurized cans; or (3) as E. C.’s applied with Micro-gen or Microsol sprayers. Rates of application were as stated in the table. The exposure to the toxicants lasted 30 minutes, 10 with the van doors closed and the other 20 with one door open. Insect knock down (K.D.) counts were made when the cages were removed at 30 minutes. Mortality counts were made at 24-hr postexposure. Average temperatures during the exposure and holding periods was 25°C. Except when KD and 24-hr mortality were very low (i.e., Lilly L-28 in 1977), all tests were replicated at least twice. All KD and 24-hr mortality counts were corrected by using Abbott’s formula and averaging.

Aerosol, Dust, and ULV Concentrate Insecticides Tested for Quarantine Use Against Caribbean Fruit Fly, 1977 and 1978