Abstract:

The toxicity of lambda-cyhalothrin、beta-cypermethrin plus emulsion, E,C、alathion、azadirachtin and xylene at the different concentration and treating time was studied with five insect cell lines, applying Blackman viability analysis instrument. The results showed that the four types of pesticides had toxic effect on the cell lines, while xylene at three concentrations had no obvious toxic effect on the cell lines. The tests indicated that azadirachtin was significantly more toxic than other pesticides, then in turn were beta-cypermethrin plus emulsion,E,C, alathion, and lambda-cyhalothrin. The five cell lines responded differentially to the same testing concentration of same pesticide, and had different sensitivity to the chemicals. Amonge them, cell line Sf 9 was more sensitive than other cell lines, followed in turn by NIAS-MaBr-85,SL2, NIH-SaPe-4 and C6/36. The results indicated that the sensitivity of insect cell lines to the pesticides was in accord to the mechanism of pesticides, and the insect cell lines used for the determination of pesticide cytotoxicity is feasible.

Key words: cytotoxicity, insect cell lines, pesticide, xylene, fatality rates