两种柞蚕微孢子虫病病原致病力的比较

Comparison of Microsporidiosis Etiology Virulence for Two Tussah Types

近年柞蚕微孢子虫病的发生有了新的变化,病原种类中寄生率较低的Nosemasp.(一种未命名的小孢子)发生比例在逐年上升。比较原来的寄生优势种柞蚕微粒子虫与Nosemasp.对蚕的致病力,结果表明:Nosemasp.的致病力与柞蚕微粒子虫相当。发生比例上升的原因多数是镜检遗漏所致。

Recent years have seen the new changes of Tussah microsporidiose. Nosema sp. （one un- named microspore） which occurs least is becoming to rise year by year. Therefore, the comparison of virulence between the used-to-be dominant species, tussah corpuscule, and Nosema sp., was carried out. The results indicate their virulence is fairly equivalent. The reason for the rising trend of Nosema sp. is microscopic examination has missed to spot them.