家蚕病原微生物的交叉感染研究  

A STUDY ON CROSS-INFECTION OF PATHOGENIC MICROBES TO SILKWORM

作　　者：肖仕全[1] 潘敏慧[1] 万永继[1] 鲁成[1] 唐良彤 宋志光[3] 

机构地区：[1]西南农业大学蚕桑学重点实验室,400716 [2]重庆市第二农校 [3]重庆市北碚蚕种场

出　　处：《蚕学通讯》2003年第3期1-5,共5页Newsletter of Sericultural Science

基　　金：重庆市科委项目 (0 1- 6 814 );重庆市教委项目 (1180 3)

摘　　要：以 4种家蚕病原微生物 (CPV、NPV、Nb、SCM6 )两两交叉感染家蚕 ,每种交叉感染设不同病原浓度下的同时攻毒和先后攻毒处理 ,每天记录发病死亡数。统计分析表明 :交叉感染情况下 ,除SCM6 表现为感染力上升外 ,其余均明显下降 ;死亡率与攻毒方式的关系不显著 ;The mechanisms of infection of silkworm by a single pathogenic microbe are well documented. However, little is known about the relationship between pathogenic microbes. In the study reported in this paper, 3 rd instar larvae of silkworm were exposed to one or two of the 4 pathogenic microbes (CPV, NPV, N.b and SCM 6) concurrently or successively at different concentrations. Their death rate was recorded every day. Statistical analysis showed that compared with single infection, cross-infection had significantly lower dearth rate in all treatments with the exception of SCM 6, which had a higher death rate than single infection. Death rate was not closely associated with infection methods. Death rate rose with the concentration of the pathogenic microbe used.

关 键 词：家蚕 病原微生物 交叉感染 死亡率 攻毒方式 

分 类 号：S884[农业科学—特种经济动物饲养]