Pathogenicity of birnaviruses isolated from turbot (Scophthalmus maximus) : comparison with reference serotypes of IPNV
نویسندگان
چکیده
The pathogenicity of different birnavirus strains to turbot was determined by challenge experiments. The reference strains of IPNV (Sp, Ab and VR-299) were not pathogenic for turbot (Scophthalmus maximus). The Norwegian serotype (N1) and two selected birnavirus strains isolated from turbot and related to the Ab serotype of IPNV (TB-306 and TB-390) were virulent to different degrees for turbot and the virus could be recovered from survivor fish. Other turbot birnavirus strains (TB-3 11, TB-231,TB-160 andTB-460) wereless virulent for this species. Neutralizing antibodies were detected with low titer in 30 g turbot inoculated with a virulent strain (TB-306). No pancreatic necrosis was found in turbot inoculated with this viral strain (TB-306)) but this lesion was present in inoculated rainbow trout (Oncorhynchus mykiss).
منابع مشابه
Genomic Sequencing of Ranaviruses Isolated from Turbot (Scophthalmus maximus) and Atlantic Cod (Gadus morhua)
Ranaviruses have been isolated from Atlantic cod (Gadus morhua) and turbot (Scophthalmus maximus) in Denmark. Phylogenomic analyses revealed that these two ranaviruses are nearly identical and form a distinct clade at the base of the ranavirus tree branching off near other fish ranaviruses.
متن کاملEffects of seawater pH on survival, growth, energy budget and oxidative stress parameters of juvenile turbot Scophthalmus maximus
This study aimed to elucidate the influence of environment pH on survival, growth, energy allocation and oxidative damage of juvenile Scophthalmus maximus (19.89±0.25 g). Six pH treatments (6.3±0.2、6.8±0.2、7.3±0.2、7.8±0.2、8.3±0.2、8.8±0.2) lasting for eight weeks were included. Measurements of survival (SR), feed conversion ratio (FCR), specific growth rate (SGR), weight gain rate (WGR), energy ...
متن کاملIsolation of oxidase-negative Aeromonas salmonicida from diseased turbot Scophthalmus maximus
The first outbreak of dlsease due to an atyplcal Aeromonas salmonicida among turbot Scophthalmus maximus (L . ) in Denmark is reported. The causal organism was oxidase-negative, non-pigmented, and slow-growing. Additionally it differed from the typical strains in a number of biochemical characters. The mortality among turbot in the farm was high but was responsive to antlmlcrobial therapy.
متن کاملEffects of seawater pH on survival, growth, energy budget and oxidative stress parameters of juvenile turbot Scophthalmus maximus
This study aimed to elucidate the influence of environment pH on survival, growth, energy allocation and oxidative damage of juvenile Scophthalmus maximus (19.89±0.25 g). Six pH treatments (6.3±0.2, 6.8±0.2, 7.3±0.2, 7.8±0.2, 8.3±0.2, 8.8±0.2) lasting for eight weeks were included. Measurements of survival (SR), feed conversion ratio (FCR), speci...
متن کاملIntestinal colonization potential of turbot (Scophthalmus maximus)- and dab (Limanda limanda)-associated bacteria with inhibitory effects against Vibrio anguillarum.
Of more than 400 bacteria isolated from turbot (Scophthalmus maximus), 89 have previously been shown to inhibit the in vitro growth of the fish pathogen Vibrio anguillarum. The aim of the present study was to investigate the potential of seven of these strains, as well as of intestinal isolates (four strains) from a closely related fish, dab (Limanda limanda), for colonizing farmed turbot as a ...
متن کامل