Dynamics of the control of Aedes (Stegomyia) aegypti Linnaeus (Diptera, Culicidae) by Bacillus thuringiensis var israelensis, related with temperature, density and concentration of insecticide

Revista Brasileira de Entomologia

Jonny E. Duque L¹  Mario Antônio Navarro-silva¹ 

[1] ,Universidade Federal de Paraná Programa de Pós-graduação em Ciências Biológicas, Entomologia Departamento de ZoologiaCuritiba PR ,Brasil

关键词: Biological control;    environmental variable;    Mathematical model;    Controle biológico;    Modelo matemático;    variáveis ambientais;   

DOI  :  10.1590/S0085-56262006000400014

来源: SciELO

【 摘 要 】

The dynamics of the control of Aedes (Stegomyia) aegypti Linnaeus, (Diptera, Culicidae) by Bacillus thuringiensis var israelensis has been related with the temperature, density and concentration of the insecticide. A mathematical model for biological control of Aedes aegypti with Bacillus thuringiensis var israelensis (Bti) was constructed by using data from the literature regarding the biology of the vector. The life cycle was described by differential equations. Lethal concentrations (LC50 and LC95) of Bti were determined in the laboratory under different experimental conditions. Temperature, colony, larvae density and bioinsecticide concentration presented marked differences in the analysis of the whole set of variables; although when analyzed individually, only the temperature and concentration showed changes. The simulations indicated an inverse relationship between temperature and mosquito population, nonetheless, faster growth of populations is reached at higher temperatures. As conclusion, the model suggests the use of integrated control strategies for immature and adult mosquitoes in order to achieve a reduction of Aedes aegypti.

【 授权许可】

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