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以重要的储藏物害虫嗜卷书虱Liposcelisbostrychophila为试虫 ,对其卵、1～ 4龄若虫、成虫等虫态在高CO2 (35 %CO2 ∶2 1%O2 ∶4 4 %N2 )气调作用下的急性致死及行为反应进行了系统研究。结果表明 :嗜卷书虱不同虫态对CO2 的敏感性由大到小依次为 1龄若虫、2龄若虫、4龄若虫、3龄若虫、成虫和卵 ;其致死中时 (LT50 )分别为 4 .4 0 0 1,4 .75 10 ,5 .4 4 72 ,6 .0 5 91,9.4 6 4 3,39.36 77h。嗜卷书虱的卵经高CO2 气调处理后 ,初孵时间和若虫的发育历期受到明显影响 ,处理 3.5d ,卵及若虫的发育历期分别向后推迟 3.85d和 1.72d。嗜卷书虱的成虫对高CO2 气调处理表现出麻醉反应特点 ,其麻醉程度随着气调处理时间的延长而加重。麻醉后的苏醒反应也表现出一定的规律性 :随着处理时间的延长 ,试虫的起始苏醒时间后延 ,当处理时间达到一定长度时 (成虫的LT50 为 9.4 6h) ,试虫将不再苏醒而死亡
Liposcelis bostrychophila, an important insect pest, was used as the test organism and the effects of high CO2 (35% CO2: 21% O2: 44% N2) on its eggs, 1st to 4th instar nymphs and adult worms Under the acute lethal and behavioral responses were systematically studied. The results showed that the sensitivities of different stages of ticks to CO2 were first instar nymphs, second instar nymphs, fourth instar nymphs, third instar nymphs, adult worms and eggs. Their lethality (LT50) were 4 .4 0 0 1,4 .75 10, 5 .4 4 72, 6 .0 5 91,9.4 6 4 3,39.36 77h. After the treatment of 3.5 d, the developmental durations of eggs and nymphs were postponed 3.85 days and 1.72 days respectively. Beetles addicted to adult lice on the high CO2 atmosphere showed anesthetic response characteristics, the degree of anesthesia with the atmosphere treatment time and aggravate. The recovery response after anesthesia also showed some regularity: with the prolongation of treatment time, the initial recovery time of test insects was delayed. When the treatment time reached a certain length (the LT50 of adult worms was 9.46 hours), the test insects would not Re-awakening and death