Natural co-infection with infectious hypodermal and hematopoietic necrosis virus (IHHNV) and infectious myonecrosis virus (IMNV) in Litopenaeus vannamei in Brazil

✍ Scribed by Maríllia Alves Teixeira-Lopes; Patrícia Raquel Nogueira Vieira-Girão; José Ednésio da Cruz Freire; Ítalo Régis Castelo Branco Rocha; Francisco Hiran Farias Costa; Gandhi Rádis-Baptista

• Book ID: 116249896
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 388 KB
• Volume: 312
• Category: Article
• ISSN: 0044-8486
• DOI: 10.1016/j.aquaculture.2011.01.005

✦ Synopsis

Cultivation of whiteleg shrimp (Litopenaeus vannamei) constitutes a growing aquaculture industry in northeast Brazil. Similar to other animals that are intensively farmed, shrimp experience disease outbreaks, which are a constant threat and cause eventually significant economical losses. Infectious hypodermal and hematopoietic necrosis virus (IHHNV) and infectious myonecrosis virus (IMNV) are prevalent epizootic viral agents in Brazil. In a routine monitoring program for the diagnosis of IHHNV and IMNV, using molecular techniques like conventional PCR, reverse transcription coupled with PCR (RT-PCR) and absolute quantitative PCR (qPCR), we found that most positive samples of shrimp were simultaneously co-infected with both viruses. This survey is the first to show the occurrence of a natural co-infection that is caused by IHHNV and IMNV in penaeid shrimp attacked by viral disease that were cultivated in Northeast Brazil.