高温对番石榴实蝇不同虫态的致死效应研究

研究了高温下番石榴实蝇Bactrocera correcta(Bezzi)各虫态的存活情况.结果表明,在高温条件下,番石榴实蝇各虫态随着试验温度升高和处理时间延长,死亡率显著升高.处理24.0 h卵、幼虫、蛹、成虫的亚致死高温区分别为43.0～44.0、44.0～45.0、38.1～42.3和38.2～43.8℃,致死高温区分别为45.0～46.0、>46.0、42.4～45.5和43.8～45.7℃.番石榴实蝇蛹、成虫死亡率(Y)与温度(X1)、处理时间(X2)之间的二次多项式方程分别为Y=828.63-45.22X1-11.45X2+0.616X21+0.300 4X1X2和Y=3 902.87-194.73X1-7.722X2+2.424X21+0.200 4X1X2.研究结果为该虫的检疫处理和风险预警等提供了科学依据.

The Lethal Effect of High Temperature on Different Stages of Bactrocera correcta

The lethal effect of high temperature at all stages of Bactrocera correcta(Bezzi) was studied in this paper.The results showed that the mortality of the fruit fly eggs,larvae,pupae,and adults increased significantly with the temperature rising from 38,40,42,44 to 46 ℃,with the treatment time prolonging from 1.5 h to 24.0 h.The sub-lethal high temperature zones for the eggs,larvae,pupae,and adults were 43.0-44.0,44.0-45.0,38.1-42.3,38.2-43.8,respectively;the lethal high temperature zones for the eggs,larvae,pupae and adults were 45.0-46.0 ℃,over 46.0,42.4-45.5 and 43.8-45.7 ℃,respectively.The relationship between the mortality(Y) of the fruit fly pupae and adults,and temperature(X1),treatment time(X2) was simulated as equations Y=828.63-45.22X1-11.45X2+0.616X21 +0.300 4X1X2,and Y=3 902.87-194.73X1-7.722X2 +2.424X21 +0.200 4X1X2.