吉林农业大学学报2011，Vol.33Issue(1)：79-83,92,6.
凡纳滨对虾感染与暴发白斑综合征(WSD)的密度因素分析
Investigation of the Effect of Aquaculture Density on the Infection and Outbreak of White Spot Disease (WSD) in Litopenaeus vannamei
摘要
Abstract
White spot syndrome viruse (WSSV) carried by cultured Litopenaeus vannamei in several districts in Shanghai, Jiangsu and Hainan in China was detected by polymerase chain reaction (PCR). Data showed that up to 40％-58％ of the sampled shrimp were infected with WSSV, indicating that the infection rate of WSSV in L. vannamei was still high in the latest years even if the shrimp were of SPF or SPR origin. As a possible risk factor associated with the consequence, the current aquaculture model characterized by high culture density, was considered in this study, and the roles of high and low culture density during shrimp infection with WSSV and outbreak of WSD were investigated, respectively. Analysis of the shrimp mortality indicated that the mortality of shrimp cultured in the high density was 96.9％ (with salinity unchanged) or 98.1％ (with abrupt salinity reduction), whereas that of those cultured in the low density was 5.0 ％ (with salinity unchanged) or 26.7 ％ ( with abrupt salinity reduction), suggesting that the difference in mortality between shrimp cultured with high and low density was remarkable;data from real time PCR also indicated that WSSV multiplicated much more quickly in shrimp cultured in the high density than that in the low density. Taken together, the present study demonstrates that the high culture density plays an important role during shrimp infection with WSSV and outbreak of WSD in current intensive aquaculture systems.关键词
对虾白斑综合征病毒/集约化养殖模式/养殖密度/凡纳滨对虾Key words
white spot syndrome virus (WSSV)/ intensive aquaculture model/ culture density/ Litopenaeus vannamei分类
农业科技引用本文复制引用
周俊芳,杨先乐,万夕和,胡琳琳,周帅,房文红..凡纳滨对虾感染与暴发白斑综合征(WSD)的密度因素分析[J].吉林农业大学学报,2011,33(1):79-83,92,6.基金项目
国家公益性科研院所基本科研业务费专项资金项目(2007M25),中国博士后科学基金项目(20080440654) （2007M25）
