从家蚕蛾中分离的微孢子虫MZ_1(Nosema sp.)对家蚕的病原性研究  

Studies on the Pathogenicity of a Microsporidium MZ_1 (Nosema sp.)to the Silkowrm,Bombyx mori

作　　者：沈中元[1] 徐莉[1] 

机构地区：[1]中国农业科学院蚕业研究所,镇江212018

出　　处：《蚕业科学》2001年第3期197-199,共3页ACTA SERICOLOGICA SINICA

基　　金：江苏省自然科学基金资助项目 (BK -972 0 9)

摘　　要：从养蚕生产的蚕蛾中分离到一种小型微孢子虫 ,暂名MZ1,其形状为卵圆形 ,大小为 2 49± 0 10 μm×1 32± 0 12 μm。寄生家蚕的大多数组织器官 ,在蚕体内的生殖发育圈与N .bombycis相似。对家蚕的致病力弱 ,ID50为每条蚕 172 5 0粒孢子 ,能在蚕体内经胚种传染给下一代。MZ1具有Nosema属的分类特征 ,初步定为Nosemasp .。A microsporidium,named as MZ 1 temporarily,was isolated from the silkworm moth.The spore of MZ 1 is oval in shape and 2 49±0 10 μm×1 32±0 12 μm in size.MZ 1 can parasitize most organs and tissues in the silkworm.The life cycle of MZ 1 in the silkworm is similar to that of the Nosema bombycis .Its pathogenicity to the silkworm is much weaker than that of the N.bombycis .ID 50 of the MZ 1 to the silkworm is 17 250 spores per larva.Moreover,the MZ 1 could be transovarianly transmitted to progeny of the silkworm.MZ 1 showed the classification characteristics of the Nosema genus,thus,it is classified as Nosema sp.

关 键 词：微孢子虫 家蚕 病原性 家蚕蛾 胚种传染性 

分 类 号：S884.6[农业科学—特种经济动物饲养]