Experimental co?infection by <i>Aeromonas hydrophila</i> and <i>Aeromonas jandaei</i> in pirarucu <i>Arapaima gigas</i> (Pisces: Arapaimidae)
نویسندگان
چکیده
In fish, bacteriosis has been widely linked with Aeromonas species, but co-infection by these bacteria little addressed. The aims of this study were to report on an outbreak disease in pirarucu Arapaima gigas caused and investigate experimental characterize resistance profile, virulence factors phenotypic molecular differentiation. Fish samples clinical signs collected used co-infection. bacterial isolates characterized phenotypically as hydrophila jandaei. Virulence genes aerA, gcat, lip, dnase hlyA detected using the polymerase chain reaction, while alt, act ser not found. Resistance imipenem ceftriaxone was observed; however, all susceptible most antibiotics assayed. Phenotypic tests determine presence metallo-?-lactamases showed positivity only for A. jandaei strains. Assays kpc, ndm, imp, oxa-48 vim negative results. pathogenicity association gigas, established accordance Koch's postulate, provided support existence synergism between bacteria. This several implications relating occurrences determinants virulence.
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ژورنال
عنوان ژورنال: Aquaculture Research
سال: 2021
ISSN: ['1355-557X', '1365-2109']
DOI: https://doi.org/10.1111/are.15021