| Abstrakt: |
Major bacterial pathogens responsible for infectious diseases in Cyprinus carpio Linnaeus 1758 have a negative economic impact on aquaculture and decrease the quantity of fish production. A total of 174 C. carpio were collected from fish farms in Sulaimani City. The fish samples were examined for clinical signs of infectious diseases prior to habitual bacteriology. Identification of bacterial isolates to species level by using VITEK®2 and sequencing of 16S rDNA was done. Antibiotic susceptibility testing was done by the Kirby-Bauer disk diffusion method. This research revealed the occurrence of 21 species of bacteria, belonging to eight families (Enterobacteriaceae, Pseudomonadaceae, Aeromonadaceae, Comamonadaceae, Bacillaceae, Staphylococcaceae, Streptococcaceae, and Moraxellaceae). The most common pathogen of gram-negative isolates was Aeromonas sobria (15.87%), while gram-positive was Exiguobacterium profundum ((9.52%). Results of antibiotic susceptibility testing showed that all isolates were multidrug resistant; Staphylococcus aureus and S. warneri were determined to be methicillinresistant. Recording of 12 species of bacteria (Bacillus cereus, Priestia megaterium, Comamonas aquatica, Citrobacter freundii. Enterobacter hormaechei subsp. xiangfangensis, E. mori, Escherichia fergusonii, Exiguobacterium aestuarii, E. profundum, Lactococcus taiwanensis, Pantoea agglomerans, and S. warneri) from C. carpio are considered to be the first records in Iraq. [ABSTRACT FROM AUTHOR] |
