斑蝥素对粘虫胃毒机理的初步研究

Preliminary Mechanism Study on Stomach Poisoning of Cantharidin on Armyworm

斑蝥素(Cantharitin,C10H12O4)是广泛存在于芫菁类昆虫体内的一种昆虫毒素,对害虫具有毒杀活性,但其作用机理不明。本试验通过症状、组织学观察,研究斑蝥素对中肠的影响,已取得如下结果:1、斑蝥素对粘虫具有较强的胃毒活性。粘虫的胃毒症状表现复与斑蝥素的浓度关系密切。2、斑蝥素对粘虫中肠组织的影响:斑蝥素胃毒处理粘虫后,中毒试虫的中肠细胞被破坏,致使粘虫死亡。

Cantharidin(C(10)H(12)O4) is an endosomatic toxin widespread in cantharid insects and shows poisoning activity to pest insects. But its toxic mechanism remains unclear. The experiment studied the influences of cantharidin on midgut by symptom analysis and histological observation histological observation. The results indicated that cantharidin dosedependently displayed tenacious stomach toxicity to armyworm and the midgut cells of poisoned armyworm were destructed and rendered the worms death.