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. 1978 Jan;35(1):121–123. doi: 10.1128/aem.35.1.121-123.1978

Toxicity of Bacillus thuringiensis spores to the tobacco hornworm, Manduca sexta.

J H Schesser, L A Bulla Jr
PMCID: PMC242789  PMID: 623457

Abstract

Toxicity of Bacillus thuringiensis spores to the tobacco hornworm, Manduca sexta, is described. The numbers of larvae killed were in relation to spore dry weight. At a surface application of 6.8 ng/cm2, there was an 85 percent survival, but less than 50 percent survived at 68.2 ng/cm2. Striking similarity of spores to parasporal crystals is revealed by slope of mortality curves, inhibition of stadial growth, and 50 percent lethal dose values based on protein content.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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