Journal
JOURNAL OF FISH DISEASES
Volume 43, Issue 7, Pages 801-812Publisher
WILEY
DOI: 10.1111/jfd.13181
Keywords
Algeria; betanodavirus; Epinephelus costae; Epinephelus marginatus; groupers; viral encephalo-retinopathy
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This work describes betanodavirus infection in two species of groupers (family Serranidae) from the Algerian coast: the dusky grouper Epinephelus marginatus and the golden grouper Epinephelus costae. At necropsy, characteristic clinical signs, external injuries, clouded eyes and brain congestion, generally associated with viral encephalopathy and retinopathy (VER) infection were observed. The partial sequences of RNA1 and RNA2 from two viral strains were obtained, and the phylogenetic analysis revealed the presence of the red-spotted grouper nervous necrosis virus (RGNNV) genotype closely related to strains previously detected in groupers in the same geographic area. Results obtained in this study support the hypothesis that VER disease is endemic in the Algerian grouper population.
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