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Isolation of Bacillus thuringiensis subsp. israelensis from diseased field-collected larvae of the saturniid moth, Hylesia metabus , in French Guiana

1993; Oxford University Press; Volume: 107; Issue: 2-3 Linguagem: Inglês

10.1111/j.1574-6968.1993.tb06030.x

1574-6968

J.‐M. Vassal, H. de Barjac, Roger Frutos, Brian A. Federici,

Insect and Pesticide Research

An isolate of Bacillus thuringiensis subsp. israelensis (BTI) was obtained from field-collected larvae of the saturniid moth, Hylesia metabus. This isolate was shown to belong to serotype H 14, and to produce a spherical parasporal body identical to that of the type strain of BTI. With an LC50 of 0.764 μg cm−2, this isolate was more toxic to H. metabus than the HD-1 strain of B. thuringiensis subsp. kurstaki (HD-1). These results demonstrate that BTI can be active against lepidopterous insects, a wider spectrum of activity than previously realized.