Ovicidal and larvicidal effects of spinosad in Aedes aegypti (Diptera: Culicidae)
Autor(es): Argueta, Ana L.; Valle, Javier; Marina, Carlos F.
Resumo: The ovicidal and larvicidal effects of spinosad were studied in Aedes aegypti treated with concentrations of 0.1, 5 y 10 ppm spinosad (Tracer 480SC) during different periods of exposure at a constant temperature of 25 +/- 1 degrees C. In a first experiment the ovicidal effects were low (6.6-8.2% of non-eclosion averaged over 12-96h exposure periods), whereas in a second experiment ovicidal effects were moderate (27,9 - 31,9% of non-eclosion in eggs exposed to spinosad suspension of 1-12 weeks old). Mortality of larvae increased significantly with increasing concentration and increasing duration of exposure to this product. Although spinosad has clear applications as a mosquito control product for control of vectors such as A. aegypti, it is clear that its vector control potential resides in its larvicidal effects rather than its ovicidal activity.
Palavras-Chave: Vector control; Mortality; Toxicity; Dengue
Imprenta: Revista Colombiana de Entomologia, v. 37, n. 2, p. 269-272, 2011
Descritores: Aedes aegypti - Larvicide ; Aedes aegypti - Ovicida ; Aedes aegypti - Public health
Data de publicação: 2011
