Abstract:
The evolutionary lineage and taxonomy of the Australian dingo is controversial, however recent genomic and gut metagenomic research has suggested that dingoes are evolutionarily distinct from modern dogs. Staphylococcus species are known commensal organisms of dogs and other mammals. In this study we took the opportunity to determine the carriage rate and antimicrobial resistance profiles of Staphylococcus species from 15 captive Australian dingoes. S. pseudintermedius was the only coagulase-positive species recovered, isolated from 6/15 (40%) and 9/13 (69%) of the animals during the 2020 (winter) and 2021 (summer) sampling times, respectively. Twenty-three coagulase-negative isolates were characterised, with S. equorum being the most frequently (20/23, 87%) recovered species. Two isolates of S. equorum had their genomes sequenced to learn more about this species. Antimicrobial resistance amongst both coagulase-positive and -negative isolates was low; with resistance to only 3 of 12 antimicrobials observed: penicillin, erythromycin, and trimethoprim. We have shown that the Australian dingo is a host organism for S. pseudintermedius much like it is in dogs, however the carriage rate was lower than has previously been reported from dogs in Australia.
摘要:
澳大利亚野狗的进化谱系和分类是有争议的,然而,最近的基因组和肠道宏基因组研究表明,野狗在进化上与现代狗不同。葡萄球菌物种是狗和其他哺乳动物的已知共生生物。在这项研究中,我们借此机会确定了15种圈养澳大利亚野猪的葡萄球菌的携带率和耐药性。假中介是唯一被回收的凝固酶阳性物种,在2020年(冬季)和2021年(夏季)采样时间内从6/15(40%)和9/13(69%)的动物中分离出来,分别。对23个凝固酶阴性分离株进行了表征,S.equorum是最常见的(20/23,87%)回收物种。对两种分离株的基因组进行了测序,以了解有关该物种的更多信息。凝固酶阳性和阴性分离株的抗菌素耐药性较低;仅对12种抗菌药物中的3种具有耐药性:青霉素,红霉素,还有甲氧苄啶.我们已经证明澳大利亚野狗是假中介链球菌的宿主生物,就像狗一样,然而,携带率低于以前报道的澳大利亚狗。