Experimental susceptibility of European sea bass and Senegalese sole to different betanodavirus isolates

Veterinary Microbiology
S SoutoI Bandín

Abstract

The susceptibility of juvenile European sea bass and Senegalese sole to three VNNV isolates (a reassortant RGNNV/SJNNV, as well as the parental RGNNV and SJNNV genotypes) has been evaluated by challenges using two inoculation ways (bath and intramuscular injection). The results demonstrate that these two fish species are susceptible to all the VNNV isolates tested. In European sea bass, RGNNV caused the highest cumulative mortality, reaching maximum values of viral RNA and titres. Although the SJNNV isolate did not provoke mortality or clinical signs of disease in this fish species, viral production in survivor fish was determined; on the other hand the reassortant isolate did cause mortality and clinical signs of disease, although less evident than those recorded after RGNNV infection. These results suggest that the changes suffered by the SJNNV RNA2 segment of the reassortant isolate, compared to the parental SJNNV, may have involved host-specificity and/or virulence determinants for European sea bass. Regarding Senegalese sole, although the three isolates caused 100% mortality, the reassortant strain provoked the most acute symptoms, and more quickly, especially in the bath challenge. This was also the isolate showing less d...Continue Reading

References

Jan 6, 2001·Diseases of Aquatic Organisms·T IwamotoI Furusawa
May 16, 2001·Science·E BaranowskiE Domingo
Jan 19, 2002·Diseases of Aquatic Organisms·J CastriJ C Raymond
Sep 23, 2006·Molecular Phylogenetics and Evolution·Vania ToffoloLuisa Dalla Valle
Nov 16, 2006·Journal of Veterinary Science·Dennis Kaw GomezSe Chang Park
Mar 6, 2008·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·José Gabriel OlveiraIsabel Bandín
Apr 20, 2011·Journal of Fish Diseases·L BigarréJ Castric
Nov 1, 2011·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Valentina PanzarinGiovanni Cattoli

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Citations

Jul 19, 2015·Veterinary Microbiology·Sandra SoutoIsabel Bandín
May 3, 2016·Journal of Fish Diseases·S SoutoI Bandín
Feb 14, 2020·Pathogens·Isabel Bandín, Sandra Souto
Aug 31, 2021·Journal of Fish Diseases·Lucía Vázquez-SalgadoIsabel Bandín
Nov 16, 2021·Journal of Fish Diseases·Yifan WangYucong Huang

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