Abstract
One hundred sixty eight strains of Edwardsiella tarda collected from cultured eel (Anguilla japonica), tilapia (Tilapia nilotica) and channel catfish (Ictalurus punctatus), and from water and plankton of culture ponds were studied for their sensitivities to 10 chemotherapeutic agents: chloramphenicol (CM), tetracycline (TC), streptomycin (SM), kanamycin (KM), aminobenzyl penicillin (ABP), cefazolin (CEZ), nalidixic acid (NA), furazolidone (NF), sulfamonomethoxine (SA) and trimethoprim (TMP). All strains were highly sensitive to CEZ and TMP. Only 32 of 168 strains were sensitive to all the drugs tested. The remaining 136 strains were resistance to various combinations of the 8 drugs (CM, TC, SM, KM, ABP, NA, NF and/or SA). The most common types of drugs resistance were to combinations of CM, TC, NF and/or SA.Transferable R plasmids were detected in 38 out of 136 resistant strains. The most common type of resistance markers of R plasmid was CM, TC and SA. Other R plasmids had markers for resistance to TC, SA, TC SA and CM TC SM KM SA.Cryptic plasmids were also detected in all strains E.. tarda tested by agarose gel electrophoresis.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
