Isolation and characterization of bacteria with antibacterial properties from Nile tilapia (Oreochromis niloticus).

One hundred and twenty bacterial isolates were obtained from the intestinal mucus of Nile tilapia (Oreochromis niloticus) and screened for antagonistic activity and adherence abilities. Based on in vitro antagonism against two pathogens (Streptococcus iniae and Edwardsiella piscicida), five isolates were selected and identified by 16S rRNA gene sequence analysis. All antagonistic isolates were affiliated to the genus Bacillus, which showed inhibitory activity against S.

Bacterial community structure in the intestinal ecosystem of rainbow trout (Oncorhynchus mykiss) as revealed by pyrosequencing-based analysis of 16S rRNA genes.

In this study, we determined the diversity and composition of bacterial communities within the intestinal ecosystem of farmed rainbow trout (Oncorhynchus mykiss). Healthy rainbow trout, weighing between 520 and 750 g, were fed a commercial diet. Subsequently, genomic DNA was isolated from the intestinal mucus (n = 16 fish samples) and combined into groups of four fish samples each for pyrosequencing analysis of bacterial 16S rRNA genes.

Parasitic copepods of the common sole, Solea solea (L.), from the Eastern Mediterranean coast of Turkey.

There is increasing interest in the common sole, Solea solea (Linnaeus), as an alternative fish species in aquaculture in the Mediterranean region, and parasitic copepods are a potential hazard for farmed finfish. This paper provides taxonomic information on two species of sea lice (family Caligidae) collected from S. solea in eastern Mediterranean waters off the Turkish coast.

Comparative seasonal sterol profiles in edible parts of Mediterranean fish and shellfish species.

The effect of different seasons on sterol content of seafoods was investigated. There were four sterols (cholesterol, sitosterol, desmosterol and stigmasterol) identified, with cholesterol being the predominant sterol. Stigmasterol was a minor component in fish muscle, whilst sitosterol was one of the main phytosterols found in fish muscle.