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Diversity of antimicrobial‐resistant pathogens from a freshwater ornamental fish farm.

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Title Diversity of antimicrobial‐resistant pathogens from a freshwater ornamental fish farm.
Not Available
 
Creator P.G. Preena
D Arathi
N Sundar Raj
T V Arun Kuma
S Arun Raja
R N Reshma
T Raja Swaminathan
 
Subject antimicrobial resistance
aquaculture
diversity
goldfish
koi carp
ornamental fish.
 
Description Broad field of applied microbiology, with particular interests to antimicrobials, rapid diagnosis, bioinformatics, microbial genetics, medical, pharmaceutical and veterinary microbiologye
The indiscriminate use of antimicrobials in aquaculture results in antibiotic selection pressure and proliferation of antimicrobial resistant (AMR) bacteria. Frequent assessment of antimicrobial resistance in aquaculture environment is inevitable so as to reduce the passage of clinically important AMR from aquatic to other environment. The present study analysed the antimicrobial resistance of pathogens associated with diseased koi carp and goldfish from an ornamental fish farm. Phenotypic and genotypic characterization of the recovered isolates from both fishes revealed significant pathogens in aquaculture such as Aeromonas, Edwardsiella tarda, Acinetobacter, Lactococcus, Citrobacter, Enterobacter and Comamonas. Shannon-Wiener diversity of koi isolates (2·359) was found to be higher than that of goldfish (1·864). Antibiotic susceptibility testing using disc diffusion with 47 antibiotics revealed significant resistance pattern of Acinetobacter, Comamonas, Klebsiella and Enterobacter from goldfish and Edwardsiella, Aeromonas, Lactococcus, Enterobacter and Acinetobacter from koi with higher multiple antibiotic resistance indexes (>0·3). The minimum inhibitory concentration of antibiotics for the major resistant isolates was found to be very high with >256 μg. All the isolates were susceptible to amoxicillin, kanamycin, cefepime, cefexime, cefotaxime, ceftazidime, doripenem, ciprofloxacin and norfloxacin, recommending their successful application in the farm. SIGNIFICANCE AND IMPACT OF THE STUDY: Antimicrobial resistance is a major threat faced in aquaculture industry. The current study provides baseline information regarding the antibiotic resistance patterns of diverse pathogens recovered from ornamental koi carp and goldfish. The higher MAR index of pathogens and greater MIC of antibiotics for the resistant isolates highlighted the intense use of antibiotics in aquaculture farm. The potential of the pathogens to exhibit resistance even towards the new generation antibiotics remind the need of prudent use of antibiotics and continuous monitoring and surveillance programmes.
Department of Science and Technology (SERB) for providing National Postdoctoral Research fellowship (PDF/2017/000378)
 
Date 2021-08-02T08:04:26Z
2021-08-02T08:04:26Z
2019-10-10
 
Type Research Paper
 
Identifier Preena, P.G., D. Arathi, N. Sundar Raj, T.V. Arun Kumar, S. Arun Raja, R.N. Reshma, and T. Raja Swaminathan. 2019. Diversity of antimicrobial‐resistant pathogens from a freshwater ornamental fish farm. Letters in applied microbiology. 71, 108—116. https://doi.org/10.1111/lam.13231
1472-765X
http://krishi.icar.gov.in/jspui/handle/123456789/52056
 
Language English
 
Relation Not Available;
 
Publisher Wiley Online Library