López Luisa Arango, Gómez-Ruiz Daisy Alejandra, Sánchez-Zapata Gloria Yaneth, Gutiérrez-Giraldo Laura Marcela, Granda-Orozco Natalia María, Úsuga-Monroy Cristina, Llano Horwald Alexander Bedoya
Grupo de Investigación GINVER, Corporación Universitaria Remington, Facultad de Medicina Veterinaria, Medellín, Colombia.
Rev Bras Parasitol Vet. 2025 Feb 14;34(1):e012224. doi: 10.1590/S1984-29612024082. eCollection 2025.
Didelphis marsupialis is a marsupial species that effectively adapts to synanthropic processes developing in cities. This marsupial lives closely with domestic animals and humans, which has favored the active exchange of parasites, thus increasing polyparasitism. Hence, this study aimed to determine the prevalence of helminths and protozoans infecting D. marsupialis in the Corregimiento of Santa Elena, Medellín. Twenty-three individuals were captured and classified as male, female, adult, or juvenile. The fecal samples were analyzed using various coprodiagnostic techniques. The eggs and oocysts were identified by microscopic evaluation of their morphology and morphometry. Twelve parasite species were identified: nine nematodes, one acanthocephalan, and two protozoans. In addition, an Adeleid coccidia considered pseudoparasite was found. The most prevalent parasite species (>50%) were Eimeria sp, Cruzia sp., Aspidodera sp., and Gnathostoma turgidum, and nematode larvae. No significant differences were observed between parasite prevalence and host sex or age. Parasites of public health interest, such as Trichuris spp., Capillariidae nematodes, Strongyloides spp., and Giardia spp., were also identified. This study confirmed that the urban habitat of the opossum has a high frequency and diversity of endoparasites, some of which have been reported for the first time in Colombia.
北美负鼠是一种能有效适应城市中人类共生进程的有袋类物种。这种有袋动物与家畜和人类生活密切，这有利于寄生虫的活跃传播，从而增加了多重寄生虫感染。因此，本研究旨在确定在麦德林圣埃伦娜行政区感染北美负鼠的蠕虫和原生动物的流行情况。捕获了23只个体，并将其分类为雄性、雌性、成年或幼年。使用各种粪便诊断技术对粪便样本进行分析。通过对卵和卵囊的形态和形态测量进行显微镜评估来进行鉴定。共鉴定出12种寄生虫：9种线虫、1种棘头虫和2种原生动物。此外，还发现了一种被认为是假寄生虫的艾美球虫。最常见的寄生虫物种（>50%）是艾美球虫属、克鲁兹属、阿斯皮多dera属和肿胀颚口线虫，以及线虫幼虫。在寄生虫流行率与宿主性别或年龄之间未观察到显著差异。还鉴定出了具有公共卫生意义的寄生虫，如鞭虫属、毛细科线虫、类圆线虫属和贾第虫属。本研究证实，负鼠的城市栖息地内寄生虫的感染频率和多样性很高，其中一些在哥伦比亚是首次报道。
