동충하초 감염 누에의 병리형태학적 특성

Pathomorphological Peculiarity of Dometic Silkworm, Bombyx mori. Infected with Cordyceps, Paecilomyces tenuipes

동충하초 포자 현탁액을 누에에 경피 접종하고 발병경과를 관찰하여 누에의 형태적 변화와 균사체 형성 번데기의 형태 및 성분변화를 조사하였다. 누에 유충 때 발병 치사된 누에는 불완전세대를 거쳐 분생포자를 형성하고 번데기 때 병사한 번데기는 균사체를 형성하고 자낭포자를 생산하는 완전 세대의 동충하초가 되었다. 발병하지 않은 건강한 번데기와 균사체 형성 번데기의 성분변화는 유리아미노산, 구성아미노산, 지방산, 핵산물질, 모두 차이가 있었다.

This study was carried out to investigate infection process, symptoms and main component of the domestic silkworm, Bombyx mori. larvae and pupa infected with the entomopathogenic fungus Cordyceps, Paecillomyces tenuipes. The Cordyceps, Paecillomyces tenuipes, was highly infectious to the silkworms. A pathogenicities of Cordyceps, Paecillomyces tenuipes, may be highly virulent because of the low resistance or high susceptibility of the silkworms. The silkworm larva infected with Cordyceps formed phialospores on the phialides at the imperfect stage of the genus Cordyceps, But silkworm pupa infected with Cordyceps formed ascospores in the asci at the perfection stage of the genus Cordyceps. The results of analysis of health silkworm pupa and silkworm pupa infected with Cordyceps were obtained that amino acid, fatty acid, and nucleoside were very different.