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Genome-based detection methods of Macrobrachium rosenbergii nodavirus, a pathogen of the giant freshwater prawn, Macrobrachium rosenbergii dot-blot, in situ hybridization and RT-PCR



Genome-based detection methods of Macrobrachium rosenbergii nodavirus, a pathogen of the giant freshwater prawn, Macrobrachium rosenbergii dot-blot, in situ hybridization and RT-PCR



Journal of Fish Diseases 26(10): 583-590



The availability of specific and rapid detection methods is essential for monitoring the health status of farmed species, particularly in viral diseases as in this case early diagnosis is a critical factor in containing disease outbreaks. Three complementary genome-based methods were developed for the detection of Macrobrachium rosenbergii nodavirus (MrNV), i.e. dot-blot hybridization, in situ hybridization and reverse transcriptase-polymerase chain reaction (RT-PCR). Detection limits were established for dot-blot hybridization and RT-PCR and are c. 7 fg and 8 pg of viral RNA, respectively. In situ hybridization indicated that infection was confined to the striated muscle tissue. As a result of its sensitivity, RT-PCR can be used for in-depth investigations to examine the extent of the viral infection and establish the onset of infection in hatcheries. The application of RT-PCR on samples collected from prawn farms in China showed the possible use of this method in routine health monitoring.

Accession: 004175975

Download citation: RISBibTeXText

PMID: 14653316

DOI: 10.1046/j.1365-2761.2003.00493.x

Download PDF Full Text: Genome-based detection methods of Macrobrachium rosenbergii nodavirus, a pathogen of the giant freshwater prawn, Macrobrachium rosenbergii dot-blot, in situ hybridization and RT-PCR



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