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Effect of blocking the mesothoracic spiracle and the removal of wings on the susceptibility of houseflies to topically applied permethrin
| Experimental group | n | LD50 value | 95 % CI | Slope | ||
|---|---|---|---|---|---|---|
| Mesothoracic spiracle | Wings | (μg/female) | ||||
| One side blocked | Removed | 40 | 0.24 | 0.21 | 0.28 | 5.5 |
| Non-blocked | Removed | 40 | 0.21 | 0.19 | 0.24 | 5.1 |
| Non-blocked | Not removed | 40 | 0.22 | 0.19 | 0.26 | 4.3 |
n Number of females tested, LD 50 lethal dose of permethrin conferring a 50 % mortality rate, CI confidence interval
