Prevalence of viral hemorrhagic septicemia virus (Novirhabdovirus) in rainbow trout (Onchorynchus mykiss).

摘要

Novirhobdovirus causes viral hemorrhagic septicemia (VHS) in rainbow trout. Tissue samples (258) from trout with symptoms of VHS from 84 aquacultural farms around Bakhtiari, Iran were tested for virus by RT-PCR. Prevalence, water temperature, seasonand body weight and fish size data were recorded. Twenty one samples (7.4%) proved positive. Water temperature ranged 6.8°C - 24.7°C. Results suggested higher incidence of VHS in colder water (P < 0.163), older fish (p=0.042) and lower body weight (P< 0.05).