Pathogenicity of Bacillus sphaericus to Larvae of the Mosquito, Culex pipiens
نویسندگان
چکیده
منابع مشابه
Toxic activity of Bacillus sphaericus SSII-1 for mosquito larvae.
Using larvae of the mosquito Culex pipiens var. quinquefasciatus as a bioassay system, we have verified an earlier proposal that pathogenicity of Bacillus sphaericus SSII-1 is a toxin-mediated rather than an infectious process. Chloroform or ultraviolet-light treatments that decreased the viable count of SSII-1 cells by 4 or 5 logs did not significantly alter the ability of the bacterial cells ...
متن کاملControl of Culex pipiens by Bacillus sphaericus and role of nontarget arthropods in its recycling.
Bacillus sphaericus was used to control Culex pipiens breeding in a water treatment settling basin near Montpellier, France. Four treatments with 4 liters/ha (3.6 lb/acre) of commercially available B. sphaericus formulation (Vectolex) reduced the larval population of Cx. pipiens with 50-600 spores of B. sphaericus/ml recorded in the treated portions of the water plant 14 days following the last...
متن کاملProteolysis in the gut of mosquito larvae results in further activation of the Bacillus sphaericus toxin.
Gut proteases from the larvae of the mosquito Culex pipiens convert the 43-kilodalton (kDa) toxin from Bacillus sphaericus 2362 to a 40-kDa peptide. The 50% lethal concentration of this peptide for tissue culture-grown cells of Culex quinquefasciatus was 1.0 microgram/ml (as determined by the intracellular ATP assay), 54-fold less than that of the 43-kDa peptide. Gut proteases from Anopheles ga...
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Background. Outbreaks of the West Nile virus infection were reported in Morocco in 1996, 2003, and 2010. Culex pipiens was strongly suspected as the vector responsible for transmission. In the North center of Morocco, this species has developed resistance to synthetic insecticides. There is an urgent need to find alternatives to the insecticides as natural biocides. Objective. In this work, the...
متن کاملDiversification of Wolbachia endosymbiont in the Culex pipiens mosquito.
The α-proteobacteria Wolbachia are among the most common intracellular bacteria and have recently emerged as important drivers of arthropod biology. Wolbachia commonly act as reproductive parasites in arthropods by inducing cytoplasmic incompatibility (CI), a type of conditional sterility between hosts harboring incompatible infections. In this study, we examined the evolutionary histories of W...
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ژورنال
عنوان ژورنال: Japanese journal of applied entomology and zoology
سال: 1980
ISSN: 0021-4914,1347-6068
DOI: 10.1303/jjaez.24.93