Hematological Changes m White Spot Syndrome Virus-Infected Shrimp, Fenneropenaeus chinensis (Osbeck)

The pathological changes of hemocytes in the haemolymph and hepatopancreas were examined in experimentally and naturally WSSV (white spot syndrome virus) infected Fenneropenaeus chinensis. The results showed that the pathological manifesta- tions of hemocytes were similar among moribund shrimps infected via injection, feeding and by nature. Firstly, the total hemocyte counts (THCs) in WSSV-infected shrimp were significantly lower than those in healthy shrimp. Secondly, necrotic, broken and dis- integrated cells were often observed, and a typical hematolysis was present in the haemolymph smear of WSSV-infected shrimp. Thirdly, necrosis and typical apoptosis of hemocytes were detected with TEM in the peripheral haemolymph of WSSV-infected shrimp. Hyalinocytes and semi-granulocytes with masses of WSSVs in their nuclei often appeared, whereas no granular bemocytes with WSSV were found in the hepatopancreas of moribund infected shrimps. All our results supported that hemocytes were the main target cells of WSSV, and hyalinocytes and semigranular hemocytes seemed to be more favorable for WSSV infection in F. chinensis.

作 者： FENG Shouming ZHAN Wenbin XING Jing LI Jun YANG Kai WANG Jing   作者單位： FENG Shouming(Laboratory of Pathology and Immunology of Aquatic Animals, LMMEC, Ocean University of China, Qingdao 266003, P. R China;Tianjin Fishery Institute, Tianjin 300221, P. R. China)

ZHAN Wenbin,XING Jing(Laboratory of Pathology and Immunology of Aquatic Animals, LMMEC, Ocean University of China, Qingdao 266003, P. R China)

LI Jun,YANG Kai,WANG Jing(Tianjin Fishery Institute, Tianjin 300221, P. R. China) 

刊 名： 中國海洋大學學報（英文版）  ISTIC 英文刊名： JOURNAL OF OCEAN UNIVERSITY OF CHINA  年，卷(期)： 2008 7(3)  分類號： P7  關鍵詞： hemoeyte   pathological changes   WSSV   Fenneropenaeus chinensis (Osbeck)  

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