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Isolation and molecular characterization of Bacillus thuringiensis found in soi...
Lobo,Katiane dos Santos; Soares-da-Silva,Joelma; Silva,Maria Cleoneide da; Tadei,Wanderli Pedro; Polanczyk,Ricardo AntonioABSTRACT This study investigated the potential of Bacillus thuringiensis isolates obtained in the Cerrado region of the Brazilian state of Maranhão for the biological control of Aedes aegypti larvae. The isolates were obtained from soil samples and the identification of the B. thuringiensis colonies was based on morphological characteristics. Bioassays were run to assess the pathogenicity and toxicity of the di...
Oviposition of Aedes aegypti Linnaeus, 1762 and Aedes albopictus Skuse, 1894 (D...
Silva,William Ribeiro da; Soares-da-Silva,Joelma; Ferreira,Francisco Augusto da Silva; Rodrigues,Iléa Brandão; Tadei,Wanderli PedroABSTRACT The aim of this study was to analyze the effectiveness of different control agents of Aedes aegypti and Aedes albopictus associated with ovitraps under laboratory and field conditions. Five treatments were used: grass infusion + Bacillus thuringiensis israelensis (gI + Bti), grass infusion + Saccharopolyspora spinosa (gI + Ss), grass infusion + Pyriproxyfen (gI + P), distilled water + Toxorhynchites ha...
Isolation of Bacillus thuringiensis from the state of Amazonas, in Brazil, and ...
Soares-da-Silva,Joelma; Pinheiro,Valéria Cristina Soares; Litaiff-Abreu,Eleilza; Polanczyk,Ricardo Antonio; Tadei,Wanderli PedroWe investigated the use of Bacillus thuringiensis isolated in the state of Amazonas, in Brazil, for the biological control of the dengue vector Aedes aegypti. From 25 soil samples collected in nine municipalities, 484 bacterial colonies were obtained, 57 (11.78%) of which were identified as B. thuringiensis. Six isolates, IBt-03, IBt-06, IBt-07, IBt-28, IBt-30, and BtAM-27 showed insecticidal activity, and only...
Variation in Aedes aegypti (Linnaeus) (Diptera, Culicidae) infestation in artif...
Soares-da-Silva,Joelma; Ibiapina,Sebastiana Silva; Bezerra,Juliana Maria Trindade; Tadei,Wanderli Pedro; Pinheiro,Valéria Cristina SoaresINTRODUCTION: Dengue is a serious public health problem worldwide, with cases reported annually in tropical and subtropical regions. Aedes aegypti (Linnaeus, 1762), the main vector of dengue, is a domiciliary species with high dispersal and survival capacities and can use various artificial containers as breeding sites. We assessed potential container breeding sites of A. aegypti in the municipality of Caxias, ...