A TaqMan real-time PCR assay for survey of white spot syndrome virus (WSSV) infections in Litopenaeus vannamei postlarvae and shrimp of farms in different grow-out seasons

文献类型： 外文期刊

第一作者： Meng, Xian-Hong

作者： Meng, Xian-Hong;Jang, In Kwon;Seo, Hyung-Chul;Cho, Yeong-Rok;Meng, Xian-Hong

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关键词： TaqMan real-time PCR;White spot syndrome virus (WSSV);Litopenaeus vannamei (Boone);Production

期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）

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收录情况： SCI

摘要： A TaqMan real-time PCR was conducted to quantify the white spot syndrome virus (WSSV) infections of three Litopenaeus vannamei hatcheries and 30 commercial grow-out ponds from different farms, during summer and autumn in South Korea. A total of 98.89% postlarvae showed WSSV-positive with very low WSSV infection load, 0.0-34.3 (mean of 3.2) copies/ng DNA, while all farm samples were WSSV-positive with a mean load of 9.8A-106 and 2.1A-105 copies/ng DNA in summer and autumn, respectively. In summer, nine (52.9%) farms showed WSSV infections with fewer than 103 copies/ng DNA and a mean shrimp production of 1.05mt/ha; meanwhile, eight (47.1%) farms showed high infections (i.e., >103 copies/ng DNA) with a mean shrimp production of 0.85mt/ha. In autumn, a total of eight (61.5%) farms showed infections with fewer than 103 copies/ng DNA, with mean shrimp production of 4.53mt/ha; five (38.5%) farms showed high infection (i.e., >103 copies/ng DNA), with a mean shrimp production of 0.42mt/ha. The mean production of autumn farms with infection loads of less than 103 copies/ng DNA, versus that of autumn farms with more than 103 copies/ng DNA, was significantly different (P <0.05).

分类号： S9

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