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Studies of the susceptibility of the cotton leafworm,spodoptera littoralis (boisduval), to various strains ofbacillus thuringiensis

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Abstract

The effect of ten different laboratory strains ofBacillus thuringiensis and of the thermostable exotoxin, was tested on larvae ofSpodoptera littoralis Boisduval. Endotoxin poisoning was not observed and whenever mortality rose substantially above the controls, it seemed due to the thermostable exotoxin and not to the parasporal crystal. Treatment of a commercial preparation with substances dissolving the crystal did not elicit acute toxemia, nor did abrasives administered with this preparation bring about fulminating septicemia.

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Authors and Affiliations

  1. Div. of Entomology, ARO, The Volcani Center, Bet Dagan

    A. Navon

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  1. I. Moore
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  2. A. Navon
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Moore, I., Navon, A. Studies of the susceptibility of the cotton leafworm,spodoptera littoralis (boisduval), to various strains ofbacillus thuringiensis . Phytoparasitica 1, 23–32 (1973). https://doi.org/10.1007/BF02980303

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  • DOI: https://doi.org/10.1007/BF02980303

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