Canadian Forest Service Publications
Characteristics of a new strain of Bacillus thuringiensis var. thuringiensis Berliner (Serotype I) isolated from the bumblebee wax moth.1966. Bucher,G.E.; Angus, T.A.; Krywienczyk, J. Journal of Invertebrate Pathology 8:485-491
Issued by: Great Lakes Forestry Centre
Catalog ID: 33160
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A new strain of Bacillus thuringietms, isolated from the bumblebee wax moth, Vitula edmandsae, has most of the biochemical and serological characteristics of strains designated as serotype I or as B. thllringiensis var. thttringiensis Berliner. However, the new strain is from 30 to 70 times as virulent for cutworm and silkworm larvae as previously isolated strains of serotype I, produces rapid paralysis in silkworms, and inhibits feeding of cutworm larvae. These effects indicate that it possesses some toxic components uncommon to serotype I strains. This conclusion is supported by the agardiffusion patterns obtained when antigen of the new strain reacts with antiserum prepared from parasporal crystals of other strains.