Culture conditions improvement of Crassostrea gigas using a potential probiotic Bacillus sp strain.

It is well demonstrated that some probiotics improve rearing water quality and thereby have beneficial effects on reared organisms. We conducted this study to determine the effect of Bacillus consortium on Crassostrea gigas reared in contemned seawater with indigo dye priory treated with Bacillus or no treated. This effect was studied by assessing hemocytes death using flow cytometry analysis.

Assessment of the correlation among antibiotic resistance, adherence to abiotic and biotic surfaces, invasion and cytotoxicity of Pseudomonas aeruginosa isolated from diseased gilthead sea bream.

Improper uses of antibiotics to treat fish disease pose an increase of multidrug resistance in Pseudomonas aeruginosa. In order to escape host antimicrobial agents and induce cytotoxicity, different virulence properties are needed by these bacteria such as, biofilm formation, adhesion and invasion ability. This study was conducted to isolate Pseudomonas aeruginosa from diseased cultured gilthead sea bream.

Virulence properties, biofilm formation and random amplified polymorphic DNA analysis of Photobacterium damselae subsp. damselae isolates from cultured sea bream (Sparus aurata) and sea bass (Dicentrarchus labrax).

Photobacterium damselae subsp. damselae has been isolated from different outbreaks affecting cultured Sparus aurata and Dicentrarchus labrax. The aim of the present study was to characterize the phenotype and genotype of 12 P.