摘要
为了解大鲵水霉病的特征及产生原因,对养殖大鲵水霉病病原的形态进行了观察。结果表明:病原是通过破坏皮肤,感染皮下肌肉,成长为具有一定长度,呈分支多而纤细的灰白色水霉菌菌丝,其生长发育分无性和有性两种繁殖方式。外菌丝主要靠出芽生殖形成新菌丝,也可形成孢子在适宜条件下发育为新菌丝;有性繁殖是在菌丝上分别形成藏卵器和雄器,受精后由孢子囊内孢子成长为新菌丝。同时还初步探讨了大鲵水霉病的发病机制和预防方法。
In order to study the characteristics and causes of the saprolegniasis in raised giant salamander （Andrias davidianus）, morphological observation of its pathogen was conducted. The results showed that the pathogen grow into grey branchy hyphae by damaging the skin to infect hypodermal muscle. Its growing development can be classified into both asexual and sexual multiplication. External hyphae developed mainly through budding reproduction, and also spores could grow to hyphae. For the sexual reproduction, oogonium and antheridium could form on the hyphae, and the spore could grow into new hyphae after artificial insemination. This paper also discussed the pathogenisis and prevention of the saprolegniasis in the raised giant salamander.
出处
《贵州农业科学》
CAS
北大核心
2009年第10期146-148,共3页
Guizhou Agricultural Sciences
基金
贵州省科学技术基金项目"大鲵养殖中水霉病的防治研究"(Z073073)
关键词
大鲵
水霉病
形态学
Andrias davidianus
saprolegniasis
morphology
