Environmental Entomology (1983) 12, 1424-1427

George E. Cantwell, Edward Dougherty and William W. Cantelo (1983)
Activity of the ß-exotoxin of Bacillus thuringiensis var. thuringiensis against the Colorado potato beetle (Coleoptera: Chrysomelidae) and bacterial mutagenic response as determined by the Ames test
Environmental Entomology 12 (5), 1424-1427
Abstract: The potential bacterial mutagenicity of the beta-exotoxin of Bacillus thuringiensis var. thuringiensis was determined by the Salmonella-microsomal assay (Ames test) and found to be non-mutagenic. The activity of three experimental preparations of B. thuringiensis var. thuringiensis were determined by feeding the preparations to house fly larvae and to neonate Colorado potato beetle larvae, Leptinotarsa decemlineata (Say). Comparisons with controls were made as to food consumption and mortality rates, and the LD₁₀ through LD₉₅ were calculated. In field tests of 0.05-ha plots of potatoes, an experimental preparation of B. thuringiensis var. thuringiensis provided excellent control of the Colorado potato beetle when applied weekly at the rate of 1,892 ml/0.4 ha.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Leptinotarsa decemlineata	Potato (Solanum tuberosum)	U.S.A. (NE)
Bacillus thuringiensis var. thuringiensis (entomopathogen)	Leptinotarsa decemlineata	Potato (Solanum tuberosum)