en Fish processing Fish processing پژوهشي Orginal research papers <p>This study was performed to investigate the prevalence of <em>Salmonella</em> spp. in 100 free freshwater common carp samples using the classic culture technique. For the confirmation of the isolates at molecular levels, the <em>invA</em> gene was detected. Serotyping of the isolates was also detected. The presence of <em>invA</em>, class 1 (<em>Cls1</em>) integrons, and integrase (<em>Int1</em>) genes was demonstrated by PCR assay; and the resistance of the <em>Salmonella</em> spp. strains to antibiotics was determined by disk diffusion test.&nbsp; <em>Salmonella</em> were detected in 3% (n=7 isolates) of the samples. Three different serotypes were detected; <em>S</em>. Panama, Enteritidis and Quinella. <em>S. </em>Panama is predominant. The <em>invA</em> was detected in the isolates. To detect antibiotic susceptibility, 14 different antibiotics were evaluated using the disc diffusion method. The isolates were evaluated for &beta;-lactamase production. All isolates were resistant to erythromycin, penicillin, oxacillin, vancomycin and clindamycin. Multiple resistances were found in all isolates. <em>S. </em>Enteritidis and one <em>S. </em>Panama were the most resistant serovars. The <em>Cls1</em> were detected in all isolates. In contrast, <em>int1</em> were detected in 57.14%. In conclusion, the prevalence of <em>Salmonella</em> in the common carp can pose a risk to the public due to&nbsp; foodborne salmonellosis, multiple antibiotic resistance properties and the potential transfer of drug resistance genes to other members of the <em>Enterobacteriaceae</em> and humans via Cls1 integron.<br> &nbsp;</p> Salmonella, Common carp, Serotypes, Antibiotic resistance, Integron/integrase 924 940 http://jifro.ir/browse.php?a_code=A-10-2171-1&slc_lang=en&sid=1 S. Pamuk spamuk@aku.edu.tr 100319475328460031034 100319475328460031034 Yes Afyon Kocatepe University, Faculty of Veterinary Medicine, Department of Food Hygiene andTechnology, Afyonkarahisar, Turkey. G. İnat ginat@omu.edu.tr 100319475328460031035 100319475328460031035 No Ondokuz Mayıs University, Faculty of Veterinary Medicine, Department of Food Hygiene and Technology, Kurupelit Campus, Atakum-Samsun, Turkey. B. Sırıken bsırıken@yahoo. com 100319475328460031036 100319475328460031036 No Ondokuz Mayıs University, Faculty of Veterinary Medicine, Department of Water Products Diseases, Kurupelit Campus, Atakum-Samsun, Turkey.