›› 2002, Vol. 45 ›› Issue (2): 182-187.

• 研究论文 • 上一篇    下一篇

自桑兰叶甲分离出的一种微孢子虫(Mic-Ⅰ)的研究

方定坚,杨琼,邹宇晓,郑祥明,黄炳辉   

  • 出版日期:2002-04-20 发布日期:2002-04-20

A microsporidium (Mic-I) isolated from Mimastra cyanura Hope

FANG Ding-Jian, YANG Qiong, ZOU Yu-Xiao, ZHENG Xiang-Ming, HUANG Bing-Hui   

  • Online:2002-04-20 Published:2002-04-20

摘要: 从广州郊区罗岗的桑园及菜地捕捉到的桑兰叶甲Mimastra cyanura Hope成虫体中分离到一种卵圆形的微孢子虫(简称Mic-Ⅰ)。孢子大小为(3.35±0.46)×(1.96±0.17) μm;孢子具单核、双核两种类型;极丝10~11圈;孢子表面抗原的血清学类型与家蚕微粒子虫Nosema bombycis孢子不同;在家蚕Bombyx mori体内以两种不同的生活史发育,发育过程符合变态孢虫属Vairimorpha微孢子虫发育特征。Mic-Ⅰ微孢子虫对家蚕具强病原性,对斜纹夜蛾Prodenia litura和小菜蛾Plutella xylostella也有感染能力。

关键词: 桑兰叶甲, 家蚕, 微孢子虫, 变态孢虫属

Abstract: A microsporidium (Mic-Ⅰ)was isolated from Mimastra cyanura Hope caught from mulberry fields and vegetable plots in the suburban in Guangzhou. The spores were (3.35±0.46)×(1.96±0.17) μm in size, oval in shape. It had two types of nucleus, mono- and bi-nucleus, and 10~11 polar filament coils. The serum type of Mic-Ⅰwas different from that of Nosema bombycis. It developed with two types of life cycles in larvae of the silkworm, Bombyx mori, had the developmental characteristics of the genus Vairimorpha and should be classified to Vairimorpha. It had very strong infectivity to Bombyx mori, and also had infectivity to Prodenia litura and Plutella xylostella.

Key words: Mimastra cyanura Hope, Bombyx mori, microsporidium, Vairimorpha