Abstract
The significance of Aeromonas hydrophila concerning hemorrhagic septicemia in aquaculture farms production in Duhok province, Iraq was investigated. Antibiotic-resistant profiles of isolates were also investigated with 8 antibiotics. Bacterial isolates were identified by using morphological and biochemical tests and confirmed molecularly by amplification of gcat gene. Out of 25 examined fish, only 19 fish were harbored A. hydrophila. Twenty-four A. hydrophila strains were isolates from 100 organ samples. Ninety-six percentages of the isolates were resistant to each of the imipenem and gentamicin, followed by doxycycline 92%, ciprofloxacin and trimethoprim-sulfamethoxazole 88%, norfloxacin 58% and ceftriaxone 33%. None were resistant to levofloxacin. Eighty-eight percentages were multiple antibiotics resistant. The high isolation rate of A. hydrophila in our study indicates that this species was the major cause of the outbreak in hemorrhagic septicemia’s cases in our area affecting carp farms and the high rate of resistance should be considered as these isolates can serve as a resistance source for human being during food series and make a great challenge for their therapeutic opportunity.
Highlights
The largest and most dangerous form of diseases affecting fish production is the bacterial infections, which account for 80% of fish mortality [1]
The high isolation rate of A. hydrophila in our study indicates that this species was the major cause of the outbreak in hemorrhagic septicemia’s cases in our area affecting carp farms and the high rate of resistance should be considered as these isolate can serve as a resistance source for human being during food series and make great challenge for their therapeutic opportunity
Aeromonas hydrophila is considered the primary cause of septicemia disease, including carp, tilapia, perch, catfish, salmon, and many other freshwaters and marine species [3]
Summary
The largest and most dangerous form of diseases affecting fish production is the bacterial infections, which account for 80% of fish mortality [1]. This would adversely affect aquaculture [2]. Considerations, including the indiscriminate overuse of antibiotics in fisheries are responsible for this This contributes to high selection pressure in bacteria to develop resistance through a variety of mechanisms such as genetic mutation and horizontal gene transfer. This is a public and marine health hazard [7]
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call