不同温度处理对赤拟谷盗的致死作用

采用水浴加热,研究不同温度(35℃、45℃、55℃、60℃、65℃)下处理不同时间(60 s、75 s、90 s、105 s、120 s)后对小麦粉中的赤拟谷盗幼虫、蛹和成虫的致死作用.研究结果表明,不同处理温度、不同处理时间对赤拟谷盗幼虫、蛹和成虫的致死作用效果差异显著.在处理温度为35℃、45℃时,各个处理时间对赤拟谷盗幼虫、蛹和成虫正常发育没有影响,而在处理温度为55℃以上时对赤拟谷盗幼虫、蛹和成虫具有较强的致死作用.在处理温度为65℃时,处理60 s以上对赤拟谷盗成虫的致死作用效果即达到100％,处理75 s可100％抑制赤拟谷盗蛹正常发育为成虫,处理90 s以上能完全抑制赤拟谷盗幼虫正常发育为成虫.

LETHAL EFFECT OF DIFFERENT TREATMENT TEMPERATURES ON TRIBOLIUM CASTANEUM(HERBST)

In this paper,we studied the lethal effect of different treatment temperatures(35 ℃,45 ℃,55 ℃,60 ℃ and 65 ℃)on the adults,pupae and larvae of Tribolium castaneum(Herbst) in wheat flour by water bath heating for different times(60 s,75 s,90 s,105 s and 120 s).The results showed that the lethal effects of the different treatment temperatures and different treatment times on the adults,pupae and larvae of T.castaneum had significant difference.At 35 ℃ and 45 ℃,treatment time had no influence on the normal development of the adults,pupae and larvae of T.castaneum.The temperature higher than 55 ℃ had strong lethal effect on the adults,pupae and larvae of T.castaneum.For the treatment at 65 ℃,the mortality of the adults reached 100% after treatment for more than 60 seconds,100% pupae could be suppressed from developing into adults after treatment for 75 seconds,and the larvae could be completely suppressed from developing into adults after treatment for 90 seconds.