摘要
从蓝萤叶甲分离收集到的大型微粒于孢子（简称蓝叶虫微粒子），感染寄生家蚕后能引起胚种传染，但初次感染后引起的胚种传染率很低，对次代蚕群体生长发育的影响也很小，混育感染可使下一代蚕儿大部分被感染。经过两次继代传染以后，其胚种传染率大大地提高，从而使下一代蚕儿因直接的胚种传染或间接的混育传染全部在蚕期发微粒子病而死去。
The transovarian transmission in the
silkworm of large microsporidia isolated fromthe Phyllobrotica armata Baly was demonstrated
in our experiment through oral inocula-tion.The ratio of transovarian transmission caused by
the primary infection was verylow and the growth and development of the silkworm progeny
was normal,but most ofthe silkworm progeny were infected by the microsporidia due to mixed
infection. The pe-brine contamination rate in the silkworm increased largely after twice
transovariantransmission and almost all the silkworms died during the larval stage because of
transo-varian transmission or mixed infection.
出处
《蚕业科学》
CAS
CSCD
1994年第4期231-234,共4页
ACTA SERICOLOGICA SINICA
关键词
蓝叶虫微粒子
家蚕
胚种传染
病害
Phyllobrotica armata Baly
Microsporidia silkworm Transovari-an transmission
