Antimicrobial susceptibility of coagulase-negative staphylococci isolated from red-tailed racers (Gonyosoma oxycephalum)

Abstract

Antibiotic resistant Coagulase negative staphylococci CoNS have been reported around the world. Therefore, the aim of the study is to determine the antimicrobial susceptibility of CoNS isolated from red–tailed racers. Samples were swabbed from the oral cavity of 5 wild caught red–tailed racers, and were identified with biochemical test. The results obtained show that red–tailed racer 1 had S. sciuri and S. xylosus; red–tailed racer 2 had S. xylosus; red–tailed racer 3 had S. sciuri; red–tailed racer 4 had S. lentus; and red–tailed racer 5 had S. kloosii.  The resistance test was done using the Kirby–Bauer disc diffusion test. And interpreted by referring to Clinical and Laboratory Standards Institute (CLS1 2013). The results for antibiotic resistance test of  Staphylococcus xylosus, Staphylococcus sciuri, and Staphylococcus lentus show susceptibility to amoxicillin, gentamicin, erythromycin, bacitracin, vancomycin and oxacillin, but resistance towards penicillin G. One sample of Staphylococcus sciuri is intermediate towards erythromycin, and one sample of Staphylococcus kloosii shows susceptibility towards amoxicillin, gentamicin, bacitracin, penicillin G, vancomycin, and oxacillin, but is resistant towards erythromycin. Keywords: antimicrobial susceptibility, coagulase negative staphylococci, red–tailed racers, Gonyosoma oxycephalum