Hinkle N C, Sheppard D C, Bondari K, Butler J F
Department of Entomology, University of Georgia, Tifton 31793.
Med Vet Entomol. 1989 Oct;3(4):435-9. doi: 10.1111/j.1365-2915.1989.tb00252.x.
Predictive models describing best-fit regression equations for per cent mortality of horn flies as a function of temperature were determined for each of three pyrethroid insecticides (fenvalerate, flucythrinate and permethrin) over the temperature range 20-35 degrees C. Susceptible horn flies, Haematobia irritans (L.), were exposed to c. an LC70 dose of each pyrethroid using a residue-on-glass method. This technique used confined exposure in chambers with temperatures of 20, 25, 30 and 35 degrees C. Within this range, mortality was greatest at 25 degrees C with all three insecticides. Estimated temperature-mortality equations for each pyrethroid revealed different responses of horn flies to each of these insecticides. Horn flies exposed to flucythrinate demonstrated a linear mortality response that varied inversely with temperature. The response to permethrin was described by a quadratic equation, while the response to fenvalerate was best fitted by a cubic equation.
在20至35摄氏度的温度范围内，针对三种拟除虫菊酯杀虫剂（氰戊菊酯、氟氰戊菊酯和氯菊酯）中的每一种，确定了描述角蝇死亡率百分比与温度函数关系的最佳拟合回归方程的预测模型。使用玻璃上残留法，将易感角蝇（血蝇）暴露于约每种拟除虫菊酯的LC70剂量下。该技术在温度为20、25、30和35摄氏度的试验箱中进行密闭暴露。在此温度范围内，使用所有三种杀虫剂时，25摄氏度时的死亡率最高。每种拟除虫菊酯的估计温度-死亡率方程显示，角蝇对每种杀虫剂的反应不同。暴露于氟氰戊菊酯的角蝇表现出线性死亡率反应，且与温度呈反比。对氯菊酯的反应由二次方程描述，而对氰戊菊酯的反应最适合用三次方程拟合。
