罗氏沼虾莫格球拟酵母病的病理研究

A STUDY OF PATHOLOGY OF THE DISEASE CAUSED BY TORULOPSIS MOGII IN GIANT FRESHWATER PRAWN(MACROBRACHIUM ROSENBERGII)

罗氏沼虾莫格球拟酵母病的组织病理方面，莫格球拟酵母在病虾肝胰脏血隙、鳃血管、及心脏中大量侵袭，表明该病原是通过血道侵入虾的肝胰脏、鳃、心脏及性腺等组织，引起这些组织发生坏死为主的变质性病变；生化病理方面，病虾肝胰脏超氧化物歧化酶（ＳＯＤ）活性显著降低，酯酶（ＥＳＴ）活性变异范围扩大，表明病虾代谢功能和免疫功能明显衰退和紊乱。该病目前尚无法治疗，但预防有明显效果。

This paper reports the results of a pathological study on the disease caused by Torulopsis mogii in giant freshwater prawn(Macrobrachium rosenbergii). In histo-pathology, the vessel of hepatopancreas,gill vessel and heart were invaded in a large amount by Torulopsis mogii. It indicated that the Torulopsis mogii invaded into heptopancreas, gill, heart and gonad through vessels and caused a patological changes characterized by necrosis.In biochemi-pathological changes, the activity of enzyme SOD in heptopacreas of diseased prawns decreased significantly,but the range of activity of enzyme EST expandes.These changes indicated that the function of metabolism and immunization both decreased and confused in diseased prawns. There is no effective treatment to cur this disease, however, the preventiveshows a significant result.