对扇贝大规模死亡病因调查时,在栉孔扇贝体内发现一种球形病毒,大小为130—150nm,核心区电子密度较高,具双层囊膜,囊膜外具放射状纤突。病毒存在于消化腺、外套膜、肾脏、肠及鳃等组织的细胞质中。细胞超微病理变化表现为细胞核内染色质变性,凝聚于核膜内侧,线粒体外膜膨胀,内嵴溶解、消失。内质网膨胀,核糖体脱落。 In the investigation of the cause of large-scale death of scallops, a spherical virus was found in the scallop scallop, with a size of 130-150 nm. The electron density in the core area was high, with a double-layer capsule with radial fibers protruding outside the capsule. The virus is present in the cytoplasm of digestive glands, mantle, kidneys, gut and gills. The ultrastructural changes of the cells showed chromatin degeneration in the nucleus, condensed inside the nuclear membrane, swelling of mitochondrial outer membrane, dissolution and disappearance of inner cristae. Endoplasmic reticulum swelling, ribosome shedding.