Journal
AQUACULTURE
Volume 380, Issue -, Pages 1-5Publisher
ELSEVIER
DOI: 10.1016/j.aquaculture.2012.11.026
Keywords
IMNV; WSSV; Co-infection; Litopenaeus vannamei
Categories
Funding
- FINEP (Financiadora de Estudos e Projetos)
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior)
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Over the past few years, infectious myonecrosis virus (IMNV) and white spot syndrome virus (WSSV) have caused substantial economic losses to Brazilian shrimp farmers. Initially reported from different geographical locations within the country, these pathogens are becoming increasingly prevalent throughout Brazil. In the present study, 30 diseased shrimp collected from a farm in Northeastern Brazil were screened for viral infection. The shrimp were submitted to histological analysis and quantitative real-time PCR (qPCR). New probes and primers were designed for the qPCR assays, and IMNV detection was based on a modified protocol. Clinical signs of both white spot syndrome and infectious myonecrosis were observed in histological preparations from four of the sampled shrimp. The presence of both IMNV and WSSV was confirmed by qPCR in twelve specimens. Viral co-infection has previously been reported in farmed shrimp. However, this is the first Brazilian report of co-infection with IMNV and WSSV in farmed Litopenaeus vannamei. (C) 2012 Elsevier B. V. All rights reserved.
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