Isolation of Bacillus thuringiensis subsp. israelensis from diseased field-collected larvae of the saturniid moth, Hylesia Metabus, in French Guiana
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 micron 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.
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| Main Authors: | , , , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | H10 - Ravageurs des plantes, Bacillus thuringiensis, Hylesia, lutte anti-insecte, http://aims.fao.org/aos/agrovoc/c_761, http://aims.fao.org/aos/agrovoc/c_3743, http://aims.fao.org/aos/agrovoc/c_3885, |
| Online Access: | http://agritrop.cirad.fr/391529/ |
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| Summary: | 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 micron 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. |
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