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The Status and Treatment of Serious Diseases of Freshwater Prawns and Crabs in China

Document format: pdf

Publisher: Network of Aquaculture Centres in Asia-Pacific

Creation date: September 2003

Chinese mitten-handed crab (Eriocheir sinensis), Giant river prawn (Macrobrachium rosenbergii) and Oriental river prawn (Macrobrachium nipponense) are important high-quality freshwater products in China. Their culture began in the 1970s and the total output of these products had reached 700 thousand tons by the end of 1999. However, disease issues have become increasingly serious. Every year the economic losses caused by diseases amount to thousands of million Yuan; in 2000 losses due to trembling disease in crab were 2-3 thousand million Yuan while 60-70 percent farmers in Guangdong, Guangxi, Jiangsu and Zhejiang great losses totaling hundreds of million Yuan due to white body disease of M. rosenbergii. The diseases of fresh water prawns and crabs are caused by a combination of pathogenic, nutritional, physiological, and environmental factors. In this article I would like to outline the general characteristics of these diseases and their corresponding treatments.

Key Words: NACA • China • Freshwater Prawns • Freshwater Crabs • Disease • Trembling Disease • White Body Disease • Aquatic Animal Health • FAO