Biological Activity of Bacillus thuringiensis in Drosophila suzukii (Diptera: Drosophilidae)
| Autor: | M Robertson, J Cossentine, D Xu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Integrated pest management Veterinary medicine 030106 microbiology Bacillus thuringiensis Insect Control 01 natural sciences Crop 03 medical and health sciences Botany Animals Drosophila suzukii Larva Ecology biology fungi General Medicine biology.organism_classification Pupa 010602 entomology Insect Science North America Instar Drosophila PEST analysis |
| Zdroj: | Journal of Economic Entomology. 109:1071-1078 |
| ISSN: | 1938-291X 0022-0493 |
| DOI: | 10.1093/jee/tow062 |
| Popis: | Whole-culture extracts of Bacillus thuringiensis Berliner strains were assayed against larval and adult Drosophila suzukii (Matsumura), an important invasive pest of many thin-skinned soft fruit crops in North America. Of the 22 serovars tested versus larval D. suzukii , strains of Bacillus thuringiensis var. thuringiensis , kurstaki , thompsoni , bolivia , and pakistani caused high (75 to 100%) first-instar mortalities. Pupal mortality, measured as a failure of adults to emerge, varied with serovar. The first D. suzukii instar was the most susceptible of the three larval instars to B. thuringiensis var. kurstaki HD-1. Larval D. suzukii are shielded from crop treatments, as they develop under the skin of infested fruit, and adults would be a more vulnerable target for an efficacious strain of B. thuringiensis . Only one of the 21 B. thuringiensis serovars, var. thuringiensis , prepared as oral suspensions in sucrose for adult D. suzukii ingestion resulted in significant, albeit low mortality within 7 d. It is not a candidate for use in pest management, as it produces β -exotoxin that is toxic to vertebrates. |
| Databáze: | OpenAIRE |
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