对自然发生的斑节对虾烂鳃病进行了病理组织切片观察,发现病虾由杆状细菌感染造成鳃丝萎缩、坏死,鳃小片呼吸上皮脱落,鳃血中有菌团存在,而且病虾的肝胰脏、胃、肠、心脏等器官组织受毒素影响而发生组织变性坏死。证实斑节对虾烂鳃病由杆状细菌感染引起。本文对细菌引起虾体的损害及对虾的防御机制进行了探讨,认为斑节对虾是由于细菌感染造成鳃呼吸功能障碍和细菌毒血症造成肝胰脏功能障碍而死亡。 The natural occurrence of penaeous shrimp gill disease pathological tissue sections were observed and found that shrimp caused by bacilli bacterial infection caused by gill filamentation, necrosis, gill epithelial shedding, gill blood bacteria in the presence of bacteria, and the shrimp Liver, pancreas, stomach, intestine, heart and other organs and tissues affected by toxins and tissue degeneration and necrosis. Confirmed that Penaeus monodon was caused by bacillary bacteria infection. In this paper, the damage of shrimp caused by bacteria and the defense mechanism of shrimp were discussed. It was considered that P. monodon died due to dysfunction of gill respiratory tract due to bacterial infection and hepatic and pancreatic dysfunction caused by bacterial septicemia.