Figure 1
Toxicity of the three gel baits to various developmental stages of the German cockroach
| Baits | Developmental Stages | n | Slope ± SE | LT50 (95%CI) hours; means of LT50s and LT90s among the three baits were significantly different at P 0.05 (F = 239.11 and 655.37 respectively) | LT90 (95%CI) hours; means of LT50s and LT90s among the three baits were significantly different at P 0.05 (F = 239.11 and 655.37 respectively) |
|---|---|---|---|---|---|
| Imidacloprid | Male | 30 | 0.33 ±0.44 | 12.5 (10.3−14.4) | 19.3 (16.3−23.3) |
| Female | 30 | 0.12 ±0.02 | 12.7 (9.5−15.3) | 25.2 (21.1−33.1) | |
| Large | 30 | 0.14 ±0.02 | 13.7 (11−15.9) | 23.9 (20.3−31.1) | |
| Small | 30 | 0.15±0.02 | 14.5 (12.1−16.7) | 24.2 (20.7−31.1) | |
| Fipronil | Male | 30 | 0.1±0.01 | 35 (31.9−37.9) | 49.7 (45.3−56.7) |
| Female | 30 | 0.1±0.01 | 32.3 (29.2−35.2) | 47.4 (42.9–54.8) | |
| Large | 30 | 0.13 ±0.02 | 31.2 (28.4−33.8) | 43 (39.1−49.8) | |
| Small | 30 | 0.11 ±0.02 | 31.4 (28.6–34.2) | 44.4 (40.3−51.4) | |
| Hydramethylnon | Male | 30 | 0.17 ±0.06 | 63.9 (60.6–67.1) | 79.6 (75.2−86.4) |
| Female | 30 | 0.07 ±0.01 | 64.8 (60.9–68.5) | 89 (83.2−97.4) | |
| Large | 30 | 0.05 ±0.01 | 57 (52.5−61.3) | 91.4 (83.8−102) | |
| Small | 30 | 0.06±0.01 | 60.8 (43.3−77.3) | 91.2 (72.6–168.1) |