Abstract
Eleven mosquitocidal Bacillus thuringiensis isolates from Nigerian soils were screened for the degree of toxicity against Aedes aegypti larvae. The six most larvicidal isolates, code-named OBGI, OBG8, BUS4, BAR3, GSC3 and GNA13, were identified as subsp. israelensis (B.Li). Spores of the six isolates of a B. t. i. from a commercial powder (R-153-78, Roger Bellon Laboratory, Belgium) and of IPS 82 (Institut Pasteur (Standards)) were subjected to ultraviolet irradiation (280-350 nm) for up to 75 min. After irradiation, the toxicity of OBG8, OBGI, BUS4, and BAR3 was higher than that of R-153-78 but lower than that of IPS 82.
| Original language | English |
|---|---|
| Pages (from-to) | 433-438 |
| Number of pages | 6 |
| Journal | International Journal of Tropical Insect Science |
| Volume | 15 |
| Issue number | 4-5 |
| State | Published - 1994 |