Department of Pathology, Animal Reproduction, and One Health, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), São Paulo, Brazil.
Centro de Investigación IVITA, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Marangani, Peru.
Trop Anim Health Prod. 2021 Mar 18;53(2):211. doi: 10.1007/s11250-021-02650-1.
We aim to describe the parasitic population in vicuñas from three Andean communities and its relationship with fiber quality using 115 fecal and 22 fiber samples, classified according to sex, age, body condition score, and management system. Coproparasitologic diagnostic revealed that 84.4% of animals presented at least one type of parasite egg/oocyst. Most frequent parasite egg/oocyst were Strongyle-type eggs (54.8%) and Eimeria punoensis (38.3%). Wild vicuñas had a higher prevalence of Strongyle-type eggs (91.4%) than semi-captive (38.8%) animals, and age was significative to Eimeria infection; crias had the highest frequency (100%) when compared to yearlings (84.2%) and adults (49.4%). Larvae identification revealed a strong influence of domestic animals on vicuña parasite community, presenting the first report of Bunostomum phlebotomum and Gaigeria pachyscelis in vicuñas from southeastern Peru. Females had a significantly finer diameter of fiber (13.05 ± 0.73 μm) than males (14.22 ± 1.22 μm), and infection with Eimeria spp. affected negatively fiber diameter and resistance. Our results provide data for disease surveillance and encourage further parasitological studies in vicuñas.
我们旨在描述来自三个安第斯社区的羊驼寄生虫种群及其与纤维质量的关系，使用了 115 份粪便和 22 份纤维样本，根据性别、年龄、身体状况评分和管理系统进行了分类。粪便寄生虫学诊断显示，84.4%的动物至少有一种寄生虫卵/孢囊。最常见的寄生虫卵/孢囊是类圆线虫型卵（54.8%）和普诺艾美球虫（38.3%）。野生羊驼的类圆线虫型卵（91.4%）感染率高于半圈养（38.8%）动物，年龄对艾美球虫感染有显著影响；与青年羊驼（84.2%）和成年羊驼（49.4%）相比，幼羊驼的感染率最高（100%）。幼虫鉴定表明，家畜对羊驼寄生虫群落有很强的影响，首次在秘鲁东南部的羊驼中报告了嗜沫盲囊线虫和加氏盲囊线虫。雌性羊驼的纤维直径（13.05±0.73μm）显著小于雄性（14.22±1.22μm），艾美球虫感染会对纤维直径和抵抗力产生负面影响。我们的研究结果为疾病监测提供了数据，并鼓励进一步在羊驼中进行寄生虫学研究。
