| 英文摘要 |
Aerosol sprayers are still frequently used for household pest control. There are 68 commercial products of aerosol sprayers registered as the environmental insecticides in Environmental Protection Administration R. O. C. in 2003. Experiments were conducted to examine the effects of different commercial aerosols to compare the susceptibilities on different species and strains of mosquitoes. The efficacy data of each product were compared with original registries data.
Ten brands of commercial products of aerosols and three species of mosquitoes including Aedes aegypti in Kaohsiung and Tongkong, Aedes albopictus in Taipei and Kaohsiung and Culex quinquefaciatus in Taipei and Kaohsiung were chosen to test the efficacy by the method of Glass chamber. A. albopictus was the most susceptible to all tested aerosols. The susceptibilities varied in A. aegypti and C. quinquefaciatus depended on strains. It was impossible to conclude the efficacy of each active ingredient in this study because all the tested samples were multiple active ingredients within commercial products.
The methods of testing the efficacies of aerosol sprayers included Glass cylinder, Peet Grady Chamber and Glass chamber. These three methods were estimated for the practicability. With right dosage, it was adaptable to use any one of the methods. The glass cylinder space was small therefore, the control of dosage has to be very precise to prevent from overdose. Therefore, the control of dosage has to be more precise to prevent from overdose.
The tested aerosols showed that if the KT50 to A. aegypti shorter than 8 minutes and to C. quinquefaciatus shorter than 10 minutes the mortalities would reach 100%. This could be a reference to EPA for the approval of the aerosol sprayers’ licenses.
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