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中文摘要：
为探明短时极端高温对亚洲玉米螟Ostrinia furnacalis（Guenée）的影响,采用耐热能力测定方法,研究了亚洲玉米螟经6 h高温处理后的半数致死温度（LT50）、存活率以及不同高温下的半数致死时间（Lt50）。结果表明,经6 h高温处理后,亚洲玉米螟卵、初孵幼虫和成虫的LT50分别为40.24-40.44、38.59和42.84-44.54℃;当卵、初孵幼虫、1日龄和3日龄成虫分别在37、35、41和37℃时,其存活率与对照均无显著差异,而分别在39、37、43和39℃时,其存活率显著低于对照,卵、初孵幼虫、1日龄和3日龄成虫的短时高温阈值分别为37-39、35-37、41-43和37-39℃;当温度高于高温阈值时,卵、初孵幼虫和成虫的Lt50分别为0.38-6.31、0.22-8.35和3.80-24.15h,且雄成虫的Lt50小于雌成虫。研究表明,短时极端高温对亚洲玉米螟的存活率具有显著影响。
英文摘要：
To understand the effects of the transient exposure to extremely high temperatures on Asian corn borer,Ostrinia furnacalis（ Guenée）,the half lethal temperature（ LT50） and the survival rate with 6h high-temperature exposure,and the half lethal time（ Lt50） under different high temperatures were examined. The results showed that the LT50 values of egg,neonate and moth were 40. 24- 40. 44,38. 59 and 42. 84- 44. 54℃,respectively. The survival rates of egg,neonate,1-day moth and 3-day moth had no significant difference from the control at 37,35,41,or 37℃,respectively. However,the survival rates of egg,neonate,1-day moth and 3-day moth were significantly lower than the control at 39,37,43 and 39℃,respectively. The critical high temperatures for egg,neonate,1-day moth and 3-day moth were 37- 39,35- 37,41- 43 and 37- 39℃,respectively. Over the critical high temperature,the Lt50 values of egg,neonate and moth were 0. 38- 6. 31,0. 22- 8. 35 and 3. 80- 24. 15 h,respectively. The Lt50 of male was shorter than that of the female. The results indicated that extremely high temperatures significantly influenced the survival rate of O. furnacalis.
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