| white-spot syndrome virus (wssv) introduction into the gulf of mexico and texas freshwater systems through imported, frozen bait-shrimp. | we analysed 20 boxes of, frozen imported bait-shrimp (china: parapenaeopsis sp. and metapenaeopsis sp.) and 8 boxes of native, frozen bait-shrimp (gulf of mexico: litopenaeus setiferus and farfantepenaeus duorarum) by rt-pcr or pcr for taura syndrome virus (tsv), yellowhead virus/gill-associated virus (yhv/gav), white-spot syndrome virus (wssv) and infectious hypodermal and hematopoietic necrosis virus (ihhnv). all 28 boxes of shrimp were negative for tsv, yhv/gav and ihhnv; 2 boxes of imported ... | 2006 | 16956056 |