兰叶虫微孢子虫对家蚕胚种的传染  

THE GERMINATIVE INFECTION OF Microsporidia phyllobrotica TO THE SILKWORM, Bombyx mori L.

作　　者：唐聘芳[1] 万家集[1] 起萍 韩碧华[1] 

机构地区：[1]四川省农业科学院蚕桑研究所

出　　处：《西南农业学报》1994年第4期86-88,共3页Southwest China Journal of Agricultural Sciences

摘　　要：四川从兰叶虫（ＰｈｙｌｌｏｂｒｏｔｉｃａａｒｍｔａＢａｌｙ）体内分离得到一种大型微孢子虫，（以下暂称兰叶虫微孢子虫，ＭｉｃｒｏｓｐｏｒｉｄｉａＰｈｙｌｌｏｂｒｏｔｉｃａ，缩写为ＭＰ）。本试验经过１９９１～１９９２年的连续试验调查，兰叶虫微孢子虫（ＭＰ）可以感染家蚕，比家蚕微粒子孢子虫（Ｎｏｓｅｍａｂｏｍｂｙｃｉｓ）感染率低（已报导）。用感染１０６／ｍｌ（ＭＰ）孢子虫雌蚕蛾产下的卵，同批经即时浸酸（１５蛾）、冷藏浸酸（８蛾）、越年冷藏（２３蛾）后，全部饲养并调查，（包括死卵和苗尾蚁镜检），供检查１２４３９头个体，共查出患有ＭＰ孢子虫的蚕７８头，感染率在０．１１～３．４８％，而家蚕微粒子（Ｎ．ｂ）孢子虫对家蚕的胚种传染率在９８．７３％左右。说明兰叶虫微孢子虫（ＭＰ）对家蚕子代胚种传染力极弱，显著低于家蚕微粒子病（Ｎ．ｂ）孢子虫的肥种传染力，与健蚕对照区无明显差异。The Investigation in 1991￣92 showed that Microsporidia phyllobrotica(MP) had infectivity to the silkworm with much lower infection rate than that of Nosema bombycis (N. b). Eggs that treated with common acid-treat method(15 batches),and-treat method after chilling(8 batches) and hibernating refrigeration(23 batches) wers hatched and the silkworms were inoculated with MP per os,at a rate of 10￣6/ml. Dead eggs and 12439 larvae including first and last hatched larvae were inspected. Out of them,78 were infected by MP. The infection rate was 0.11￣3. 48%,no significant difference was observed between MP infected worms and the control.On the contrary,the infection rate of Nb was 90￣98. 79%.These results confirmed that Mp had a very weak germinative infectivity to silkworm and less effection on the cocoon production.

关 键 词：兰叶虫微孢子虫 家蚕 胚种 传染 

分 类 号：S884.21[农业科学—特种经济动物饲养]