Novel larvicide tablets of Bacillus thuringiensis var. israelensis: Assessment of larvicidal effect on Aedes aegypti (Diptera: Culicidae) in Colombia / Nuevas tabletas larvicidas de Bacillus thuringiensis var. israelensis: evaluación del efecto larvicida sobre Aedes aegypti (Diptera: Culicidae) en Colombia
Gómez Vargas, Wilber; Valencia Jiménez, Kelly; Correa Londoño, Guillermo; Jaramillo Yepes, Faiber.
Biomédica (Bogotá)
; 38(supl.2): 95-105, ago. 2018. tab, graf
Artigo
em Inglês
| LILACS | ID: biblio-974011
Introduction:
Aedes (Stegomyia) aegypti is the vector for dengue, chikungunya, and Zika arboviruses. Bti-CECIF is a bioinsecticide designed and developed in the form of a solid tablet for the control of this vector. It contains Bacillus thuringiensis var. israelensis (Bti) serotype H-14.Objective:
To evaluate under semi-field and field conditions the efficacy and residual activity of Bti-CECIF tablets on Aedes aegypti larvae in two Colombian municipalities. Materials andmethods:
We tested under semi-field conditions in plastic tanks (Rotoplast™) four different Bti doses (0.13, 0.40, 0.66 and 0.93 mg/L) in the municipality of Apartadó, department of Antioquia, to assess Bti-CECIF efficacy (percentage of reduction of larval density) and the residual activity in water tanks containing A. aegypti third-instar larvae. The efficacy and residuality of the most lethal dose were subsequently evaluated under field conditions in cement tanks in the municipality of San Carlos, department of Córdoba.Results:
Under semi-field conditions, the highest tested dose exhibited the greatest residual activity (15 days) after which larval mortality was 80%. Under field conditions, the highest tested Bti-CECIF doses showed 100% mortality and exhibited a residual activity of seven days in 90% of the tanks.Conclusion:
Bti-CECIF tablets effectively controlled A. aegypti larvae under field conditions for up to seven days post-treatment.
Biblioteca responsável:
CO332
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