We describe here the serological and antigenic characterization of a group of highly virulent Enterococcus strains that, since 1993, have caused heavy economic losses in turbot Scophthalmus maximus reared in northern and northwestern Spain. Reference Gram-positive strains and the corresponding polyclonal antisera raised against some species of lactic acid bacteria as well as Corynebacterium aqu...

Sentinel fish hornyhead turbot (Pleuronichthysverticalis) captured near wastewater outfalls are used for monitoring exposure to industrial and agricultural chemicals of ~ 20 million people living in coastal Southern California. Although analyses of hormones in blood and organ morphology and histology are useful for assessing contaminant exposure, there is a need for quantitative and sensitive m...

The present study combined a DGGE and barcoded 16S rRNA pyrosequencing approach to assess bacterial composition in the water of a recirculating aquaculture system (RAS) with a shallow raceway system (SRS) for turbot (Scophthalmus maximus) and sole (Solea senegalensis). Barcoded pyrosequencing results were also used to determine the potential pathogen load in the RAS studied. Samples were collec...

A study was undertaken with marketable size turbot to evaluate the effects of dietary fat levels on chemical composition, lipogenesis and flesh quality. Four experimental diets containing graded levels of fish oil in order to obtain 10%, 15%, 20% and 25% of crude fat were fed to triplicate Ž . groups of turbot initial body weight of 660 g for 12 weeks in full strength seawater at temperature of...

Juvenile pathogen-free turbot were infected with a viral haemorrhagic septicaemia virus (VHSV) isolate recovered from turbot cultivated on the island of Gigha, West Scotland. Mortality of 100% was recorded in fish infected via the intra-peritoneal (i.p.) route. Horizontal transmission of VHSV in sea water was demonstrated by cohabitation of naive fish with i.p. infected fish at a ratio of 1:1. ...

Viral hemorrhagic septicemia (VHS) is one of the most serious fish viral diseases for cultured rainbow trout (Oncorhynchus mykiss), although VHS virus (VHSV) seems to be ubiquitous among marine fishes. In the present study, VHSV isolation was performed with free-living and cultured turbot (Psetta maxima) in the Trabzon coastal area of the Black Sea to evaluate participation of VHSV in mass mort...

The 27.8 kDa membrane protein expressed in flounder (Paralichthys olivaceus) gill cells was proved to be a receptor mediating lymphocystis disease virus (LCDV) infection. In this study, SDS-PAGE and Western blotting demonstrated that 27.8 kDa receptor (27.8R) was shared by flounder and turbot (Scophthalmus maximus). Indirect immunofluorescence assay (IIFA) and immunohistochemistry showed that 2...

The aerobic bacterial flora in the gut of turbot larvae and their influence on larval survival was examined. Two turbot experiments were run with six replicates each time. Large variation, from 0% up to 44%, was observed in the survival percentage of turbot larvae. There was no correlation between the number of bacteria present in the gut of turbot larvae and the larval survival rate. During bo...

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.

the spanish turbot aquaculture sector holds a top position in the international market. thisactivity is mainly developed along the galician coast (nw spain). this article evaluates the environmentalperformance of galician turbot aquaculture according to the life cycle assessment (lca) methodology.previously, on account of the expected relevance of feed for aquaculture, marine aquafeed productio...