TABLE 3.
Susceptibilities of a nonselected laboratory colony C. pipiens quinquefasciatus (Madurai) and a selected field-collected resistant colony of C. pipiens quinquefasciatus (KOCHI) to B. sphaericus spore crystal suspensions
| Colony | B. sphaericus strain | Slope (mean ± SE) | LC50 (95% CI) (mg/liter) | LC90 (mg/liter) | X2 (df) |
|---|---|---|---|---|---|
| Madurai (susceptible) | 2362 | 1.32 ± 0.19 | 0.012 (0.007–0.019) | 0.108 | 16.6 (4) |
| IAB-59 | 1.11 ± 0.09 | 0.069 (0.058–0.085) | 0.992 | 2.79 (4) | |
| IAB-881 | 0.55 ± 0.8 | 1.31 (0.79–1.88) | 257.38 | 1.62 (4) | |
| IAB-872 | 0.54 ± 0.1 | 0.66 (0.398–0.971) | 163.6 | 0.5 (4) | |
| KOCHI (resistant) | 2362 | 1.02 ± 0.2 | 20.17 (10.97–37.06) | 368.59 | 19.4 (4) |
| IAB-59 | 1.88 ± 0.1 | 3.04 (2.69–13.45) | 14.56 | 7.2 (3) | |
| IAB-881 | >270 | ||||
| IAB-872 | >270 |