Bellusci Agustín, Pendaries Morgan, Fasola Laura, Roesler Carlos Ignacio, Beltrame María Ornela
Instituto de Investigaciones en Producción, Sanidad y Ambiente (IIPROSAM), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, UNMdP-CONICET, Juan B. Justo 2250, CP 7600 Mar del Plata, Buenos Aires, Argentina.
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
Parasitol Res. 2024 Jul 13;123(7):271. doi: 10.1007/s00436-024-08293-z.
Parasites are ubiquitous in wildlife populations and have a profound impact on population dynamics. Interest in parasites of wildlife has increased significantly in recent years, particularly in those with relevant conservation status. Patagonia is one of the wildest and remote areas of the world. The Wolffsohn's viscacha lives in a small mountainous area of Patagonia. Until now, little is known about the biology and ecology of this species. The aim of this research was to study the gastrointestinal parasite diversity in this rodent from a coprological survey. A total of 125 fecal samples from 25 colonies were examined. Each sample was rehydrated, homogenized, and analyzed using three parasitological techniques: spontaneous sedimentation, Mini-FLOTAC, and centrifugation-flotation in sucrose-saturated solution, followed by examination under optical microscopy. The samples, eggs, and oocysts of parasites were described, measured, and photographed. All colonies were positive for at least one parasite species. A total of 10 parasitic species were identified: Viscachataenia sp., possibly V. quadrata, Monoecocestus sp., an unidentified anoplocephalid, Heteroxynema sp., possibly H. (Cavioxyura) viscaciae, Helminthoxys sp., possibly H. effilatus, an unidentified strongylid-type egg, Trichuris sp., two morphologies of unidentified coccidians and Eimeria sp. This is the first exhaustive study of gastrointestinal parasites in L. wolffsohni and a large number of eggs and oocysts of parasites were found. Our results highlight the use of noninvasive techniques for the study of parasites of wildlife hosts; as in the case of this rodent with a remote habitat, which makes sampling difficult. The results of our study provide baseline information on gastrointestinal parasite infections in this species.
寄生虫在野生动物种群中普遍存在，并对种群动态产生深远影响。近年来，人们对野生动物寄生虫的兴趣显著增加，尤其是对那些具有相关保护地位的寄生虫。巴塔哥尼亚是世界上最荒凉偏远的地区之一。沃尔夫松毛丝鼠生活在巴塔哥尼亚的一个小山区。到目前为止，对该物种的生物学和生态学知之甚少。本研究的目的是通过粪便学调查研究这种啮齿动物的胃肠道寄生虫多样性。共检查了来自25个群体的125份粪便样本。每个样本进行复水、匀浆，并使用三种寄生虫学技术进行分析：自然沉淀法、Mini-FLOTAC法和蔗糖饱和溶液离心浮选法，随后在光学显微镜下检查。对寄生虫的样本、虫卵和卵囊进行了描述、测量和拍照。所有群体至少对一种寄生虫呈阳性。共鉴定出10种寄生虫：毛丝鼠绦虫属物种，可能是方形毛丝鼠绦虫，单殖绦虫属物种，一种未鉴定的无钩绦虫，异线虫属物种，可能是粘鼠异线虫，蠕虫氧线虫属物种，可能是埃氏蠕虫氧线虫，一种未鉴定的圆线虫型虫卵，鞭虫属物种，两种未鉴定球虫的形态以及艾美耳球虫属。这是对沃尔夫松毛丝鼠胃肠道寄生虫的首次详尽研究，发现了大量寄生虫的虫卵和卵囊。我们的结果强调了使用非侵入性技术研究野生动物宿主的寄生虫；就像这种栖息地偏远、采样困难的啮齿动物的情况一样。我们的研究结果提供了该物种胃肠道寄生虫感染的基线信息。
