【摘要】 １９９３年养殖的中国对虾（Ｐｅｎａｅｕｓｃｈｉｎｅｎｓｉｓ）发生了暴发性流行病，经人工感染和电镜观察，证实是由杆状病毒引起的。病虾活力差，体色暗淡或微红，头胸甲上有浅黄色至白色的斑点，头胸甲与表皮不粘连，容易剥离，血淋巴混浊，淋巴器官和肝胰腺肿大、糜烂。在肝胰腺、淋巴器官、中肠、皮下组织和鳃等组织细胞的核内均发现有大量病毒粒子。病毒粒子杆状，无包涵体，具囊膜，平均长３５０ｎｍ，宽１５０ｎｍ，核衣壳长３００ｎｍ，宽１００ｎｍ。暂将这种病毒定名为中国对虾杆状病毒（Ｐｅｎａｅｕｓｃｈｉｎｅｎｓｉｓｂａｃｕｌｏｖｉｒｕｓ，简称ＰＣＢＶ）。更多还原

【Abstract】 In 1993,population of culture shrimp,Penaeus chinensis,succumbed to an epizootic. Based on the test of infection and electric microscope observation,it was caused bv Baculovirus. The infected shrimps showed lethargic and off feed,colourless,white to yellowish spots on the carapace. The carapace was peelled off the cuticle easily,with turbid blood,The hypertrophied lymphoid organ and midgut gland were rotten.The viral virions were observed in midgut gland,lymphoid organ,midgut,hypoderm and gill.The rod-shaped virions.have envelope,but lack inclusion bodies.The average length and diameter of virions were 350nm and 150nm respectively and the average length and diameter of nucleocapsids were 300nm and 100nm respectively.The Baculovirus was temporarily designated as P. chinensis Baculovirus(PCBV).更多还原