寄主植物对黄曲条跳甲毒死蜱敏感性及相关酶活性的影响

利用上海青、菜心、山西白、甘蓝、萝卜等5种不同寄主植物饲养黄曲条跳甲后,测定寄主植物对黄曲条跳甲毒死蜱敏感性及相关酶活性的影响。结果表明,黄曲条跳甲取食不同寄主植物后对毒死蜱的药剂敏感性产生了不同程度的变化。不同的寄主植物种类对黄曲条跳甲成虫的总酯酶、羧酸酯酯活性存较大的影响,取食不同寄主植物的时间长短变化亦会造成影响。不同寄主对黄曲条跳甲成虫的乙酰胆碱酯酶活性也存在一定的影响,但是影响效应不受取食时间长短的影响。

EFFECT OF HOST PLANTS ON ENZYMES ACTIVITY AND CHLORPYRIFOS SUSCEPTIBILITY OF STRIPED FLEA BEETLE, PHYLLOTRETA STRIOLATA

This study was conducted to test the influence of different host plants,namely,Brassica campestris L.ssp.chinensis（L.）,Brassica parachinensis Bailey,Brassica campestris L.ssp.,Brassica oleracea L.var.capitata（L.） and Raphanus stativas（L.）,on the insecticide susceptibility of striped flea beetle（SFB）,Phyllotreta striolata,to chlorpyrifos and its relevant enzymes activity.The results indicated that the chlorpyrifos insecticide susceptibility of SFB could be varied by different host plants.The different host plants played a biggish role to influence the total esterase and carboxylesterase activity in SFB.And,the different feeding periods of SFB on different host plants could provide the same kind of influence.Also,different host plants played a finite role to influence the acetylcholinesterase activity in SFB.By contrast,feeding periods played no influence.