Journal of Economic Entomology (1996) 89, 359-365

O. Morris, M. Trottier, V. Converse and P. Kanagaratnam (1996)
Toxicity of Bacillus thuringiensis subsp. aizawai for Mamestra configurata (Lepidoptera: Noctuidae)
Journal of Economic Entomology 89 (2), 359-365
Abstract: Fifty-one strains of Bacillus thuringiensis subsp. aizawai were screened for toxicity against the bertha armyworm, Mamestra configurata Walker. The strain, NRRL-HD133 was selected for studies on synergism with other subspecies of B. thuringiensis. HD133 was highly toxic to M. configurata compared with the international standard (HD-1-S-1980) and was synergistic with B. thuringiensis subsp. kurstaki (HD262), B. thuringiensis subsp. kenyae (HD551), and HD262 plus HD551 when powders were fed to 3rd instars in artificial diet. When the strains were cultured together only HD133 and HD551 were synergistic.
(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:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Mamestra configurata
Bacillus thuringiensis var. kurstaki (entomopathogen)	Mamestra configurata
Bacillus thuringiensis var. aizawai (entomopathogen)	Mamestra configurata
Bacillus thuringiensis var. kenyae (entomopathogen)	Mamestra configurata