Table 4.
Toxicity index and tolerance ratio of the third instar larvae and adults of D. melanogaster to octopamine receptor agonists after 24-h of exposure on basis of LC50 values.
| Compounds | Toxicity indexa |
Tolerance ratiob | |
|---|---|---|---|
| Larvae | Adults | ||
|
| |||
| Chlordimeform | 100 | 100 | 2.64 |
| Amitraz | 63.03 | 53.25 | 3.13 |
a
Toxicity index = [(LC50 value of the most toxic pesticide divided by the LC50 value of tested pesticide) × 100] for each stage.
b
Tolerance ratio = LC50 value for adults divided by the LC50 value for third instar larvae after 24-h exposure.