Genetic diversity and antimicrobial susceptibility of motile aeromonads isolated from rainbow trout (Oncorhynchus mykiss, Walbaum) farms

ÖZER, Selmin | BULDUKLU, Sevim | TEZCAN, Seda | DÖNMEZ, Erdem | AYDIN, Esin | ASLAN, Gönül | EMEKDAŞ, Gürol

A total of 22 motile Aeromonas strains were detected in 48 (18.53%) of 259 fish and 6 (10.71%) of 56 water samples obtained from seven commercial rainbow trout (Oncorhynchus mykiss, Walbaum) farms in the province of Mersin, Turkey. These strains were identified by conventional microbiological techniques and by using an ID32GN system. Of these isolates 20 (91.3%) were identified as Aeromonas hydrophila and 2 (8.7%) as Aeromonas sobria. While 8 of the A. hydrophila strains were isolated from water samples, 12 isolates were from fish samples. Whereas A. hydrophila strains were found in all farms, A. sobria was detected in only two farms. Genetic diversity by arbitrarily primed polymerase chain reaction (AP-PCR) and antimicrobial sensitivity tests were carried out on eight A. hydr...