杂色鲍溃疡症的显微及亚显微病理变化

Pathological Studies on Ulcerate Disease in Haliotis diversicolor

杂色鲍溃疡症组织的病变主要在足部和外套膜 ,皮下结缔组织出现大量空泡变性 ,肌纤维紊乱直至断裂消失 ,细菌在组织间隙生长。发病后期消化系统出现病变 ,消化功能受阻。超微结构观察表明 ,足部、外套膜、消化道组织细胞均发生线粒体肿胀 ,内嵴变少甚至消失 ,存在不同程度的细胞内膜性空泡 ,内质网膨胀 ,核变形 ,提示本病致死原因可能为能量衰竭。

Histopathological study showed that the normal histology of the tissues of pedal, mantle and hepatopancreas were altered when ulcerate disease occurred in Haliotis diversicolor. The epithelium of pedal was extensively damaged and muscular fibers were arranged in disorder and even broken. The histological changes of mantle were characterized by the existence of massive vacuoles in connective tissues and epithelium. Bacterial cells grew between musculature and surrounding muscular connective tissue. There were some vibriosis in vascular sinuses in the pedal. The observations at the level of ultrastructure showed that the pathological changes in cells of the pedal, mantle and hepatopancreas occurred. There were different pathological changes in the cells of mantle and hepatopancreas, i.e.swollenness, denaturation and necrosis.