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Motile aeromonads recovered from tilapia (Oreochromis niloticus) cultured in earthen ponds in the Philippines: assessment of antibiotic susceptibility and multidrug resistance to selected antibiotics

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dc.contributor.author Pakingking, Rolando
dc.contributor.author Española, Jasca G.
dc.contributor.author Palma, Peter
dc.contributor.author Usero, Roselyn
dc.date.accessioned 2022-07-12T19:34:01Z
dc.date.available 2022-07-12T19:34:01Z
dc.date.issued 2022
dc.identifier.issn 0792-156X
dc.identifier.uri http://hdl.handle.net/10524/66878
dc.description.abstract A total of 177 motile Aeromonas spp., comprised of A. hydrophila (n=162) and A. sobria (n=15), isolated from the water, sediment, gills and intestines of tilapia collected from the grow-out culture earthen ponds in the Philippines were investigated for their antimicrobial susceptibility to 10 antibiotics commonly used in fish aquaculture. All motile Aeromonas spp. tested generally exhibited a very high percentage of resistance to amoxicillin (A. hydrophila: 95%; A. sobria: 100%), erythromycin (99%;100%), neomycin (83%;100%), and oxytetracycline (92%;100%), respectively. On the contrary, they showed substantial susceptibility to chloramphenicol, nitrofurantoin, doxycycline, enrofloxacin and norfloxacin. Results of the antimicrobial susceptibility testing demonstrated that 94.4% and 100% of A. hydrophila and A. sobria isolates tested were resistant to antibiotics belonging to at least 3 or more categories and therefore considered as multiple drug resistant strains. The multiple antibiotic resistance (MAR) indexing of A. hydrophila and A. sobria strains showed that they originated from high-risk sources.
dc.format.extent 11 pages
dc.relation.ispartof The Israeli Journal of Aquaculture - Bamidgeh
dc.subject antimicrobials
dc.subject Aeromonas
dc.subject oxytetracycline
dc.subject amoxicillin
dc.subject MAR index
dc.subject tilapia
dc.subject Oreochromis niloticus
dc.title Motile aeromonads recovered from tilapia (Oreochromis niloticus) cultured in earthen ponds in the Philippines: assessment of antibiotic susceptibility and multidrug resistance to selected antibiotics
dc.type Article
dc.type.dcmi Text
prism.volume 74
dc.identifier.doi https://doi.org/10.46989/001c.37010
Appears in Collections: Volume 74, 2022


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