Toxicities of Bacillus thuringiensis isolates against the forest tent caterpillar (Lepidoptera:Lasiocampidae)

Ten isolates of Bacillus thuringiensis were bioassayed against Malacosoma disstria. The objective of the test was to determine a median lethal concentration value for each isolate. Malacosoma disstria was extremely susceptible to all of the isolates tested. Median lethal concentration values ranged...

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Veröffentlicht in:	Journal of the Kansas Entomological Society 1984-01, Vol.57 (4), p.672-674
Hauptverfasser:	Pinkham, Jeff D., Frye, R. D., Carlson, R. B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bacillus thuringiensis Biological and medical sciences Biological control Control Deciduous forests Diet Entomology Fermentation Fundamental and applied biological sciences. Psychology Insect larvae Lasiocampidae Malacosoma disstria Mortality pathogens Phytopathology. Animal pests. Plant and forest protection Protozoa. Invertebrates Statistical median Tent caterpillars toxicity Uniformity
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Beschreibung
Zusammenfassung:	Ten isolates of Bacillus thuringiensis were bioassayed against Malacosoma disstria. The objective of the test was to determine a median lethal concentration value for each isolate. Malacosoma disstria was extremely susceptible to all of the isolates tested. Median lethal concentration values ranged from 0.9 μg/ml for HD-120 to 8.6 μg/ml for HD-201. Isolates HD-120 and HD-285 had the lowest${\rm LC}_{50}\text{'}{\rm s}$and highest uniformity of response and are recommended for possible testing in field trials.
ISSN:	0022-8567 1937-2353