Infections of MrNV (Macrobrachium rosenbergii nodavirus) in cultivated whiteleg shrimp Penaeus vannamei in Asia

► IMNV and PvNV are the only viruses that cause white muscle disease in P. vannamei. ► We found diseased P. vannamei positive for MrNV by RT-PCR and genome sequencing. ► MrNV previously known to cause white muscle in M. rosenbergii but not P. vannamei. ► Bioassay indicated that MrNV may cause mortality in P. vannamei at low temperature.