›› 2003, Vol. 46 ›› Issue (3): 272-276.

• 研究论文 • 上一篇    下一篇

斑蝥素对粘虫和小菜蛾幼虫中肠组织的影响

张雅林1, 周越2, 张志勇3   

  • 出版日期:2003-06-20 发布日期:2003-06-20

Effect of cantharidin on the midgut of the orient armyworm (Mythimna separata) and diamondback moth (Plutella xylostella)

HANG Ya-Lin1,ZHOU Yue2,ZHANG Zhi-Yong3   

  • Online:2003-06-20 Published:2003-06-20

摘要: 粘虫 Mythimna separata (Walker) 和小菜蛾Plutella xylostella L.的幼虫经斑蝥素处理后,中肠组织发生明显的病变。粘虫幼虫中肠柱状细胞微绒毛脱落,杯状细胞变大,质膜消失;线粒体不规则肿胀,内嵴排列紊乱、溶解、断裂;粗面内质网扩张明显,核糖体脱落;细胞核肿胀,染色质浓缩,偏移。小菜蛾幼虫中肠组织病变更为明显。表明斑蝥素主要作用于中肠的膜系统,为进一步探讨其毒理机制提供了理论依据。

关键词: 斑蝥素, 粘虫, 小菜蛾, 中肠, 毒理机制

Abstract: Obvious pathological changes in the midgut of the orient armyworm, Mythimna separata and the diamondback moth, Plutella xylostella were observed following treatment with cantharidin. The microvilli were sloughed off, goblet cell cavities enlarged, their projections sloughed off and the plasma membrane disappeared. Mitochondria swelled irregularly and their cristae fractured and become fuzzy. The cisternae of rough endoplasmic reticulum swelled obviously and the ribosomes denuded. The cell nucleus swelled and chromatin became concentrated. All the above observations show that cantharidin acts on the midgut membrane system.

Key words: Cantharidin, Mythimna separata, Plutella xylostella, midgut, toxic mechanism