鳖白毛病（White&nbspdown&nbspdisease&nbspof&nbspsoft-shelled&nbspturtle）病原主要是丝囊霉(Aphanomyces&nbspsp.)和霜霉(Pythium&nbspsp.)。病鳖的颈部、背甲、四肢或全身长有柔软的灰白色绒毛状物，在水中呈絮状，当其上面黏有污物时，绒毛呈褐色或污物的颜色，绒毛覆盖全身时，病鳖像披了一层厚厚的棉絮。病鳖焦躁不安，或在水中狂游，消耗体力，或与其他固体物摩擦，引起更大面积的创伤，当菌丝体寄生于脖颈时，病鳖伸缩困难，游泳失常，食欲减退或拒食，最终消瘦死亡。该病主要危害稚、幼鳖，偶或也有成鳖受感染；主要流行于夏季，水温30℃左右，发病率较高，但一般不会造成较大的死亡，只有当霉菌大量寄生鳖脖颈或寄生体表达2/3以上面积时，病鳖才会死亡。&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp选摘自农业部《新编渔药手册》&nbsp