Martin-Solano Sarah, Carrillo-Bilbao Gabriel A, Ramirez William, Celi-Erazo Maritza, Huynen Marie-Claude, Levecke Bruno, Benitez-Ortiz Washington, Losson Bertrand
Primatology Research Group, Behavioural Biology Unit, Department of Biology, Ecology and Evolution, Faculty of Science, University of Liège, Quai van Beneden 22, 4020 Liège, Belgium.
Instituto de Salud Pública y Zoonosis - CIZ, Universidad Central del Ecuador, PO BOX: 17-03-100, Quito, Ecuador.
Int J Parasitol Parasites Wildl. 2017 Jun 19;6(3):209-218. doi: 10.1016/j.ijppaw.2017.06.004. eCollection 2017 Dec.
Currently, there is a lack of surveys that report the occurrence of gastrointestinal parasites in the white-headed capuchin monkey (). We therefore assessed the presence and richness (= number of different parasite genera) of parasites in in wildlife refuges (n = 11) and in a free-ranging group near a human village (n = 15) in the Ecuadorian Amazon. In the 78 samples collected (median of 3 samples per animal), we identified a total of 6 genera of gastrointestinal parasites, representing protozoa, nematodes, acanthocephalans and cestodes. We observed a high prevalence (84%) across the 26 individuals, with the most prevalent parasite being sp. (76.9%), followed by sp. (38.5%) and (11.5%). We found and sp. in only a minority of the animals (3.8%). In addition, we observed unidentified strongyles in approximately one-third of the animals (34.6%). We found a total of 6 parasite genera for the adult age group, which showed higher parasite richness than the subadult age group (5) and the juvenile age group (3). Faecal egg/cyst counts were not significantly different between captive and free-ranging individuals or between sexes or age groups. The free-ranging group had a higher prevalence than the captive group; however, this difference was not significant. The only genus common to captive and free-ranging individuals was sp. The high prevalence of gastrointestinal parasites and the presence of in both populations support results from previous studies in species. This high prevalence could be related to the high degree of humidity in the region. For the free-ranging group, additional studies are required to gain insights into the differences in parasite prevalence and intensity between age and sex groups. Additionally, our study demonstrated that a serial sampling of each individual increases the test sensitivity.
目前，缺乏关于白头卷尾猴胃肠道寄生虫发生情况的调查。因此，我们评估了厄瓜多尔亚马逊地区野生动物保护区（n = 11）和靠近人类村庄的自由放养群体（n = 15）中寄生虫的存在情况和丰富度（即不同寄生虫属的数量）。在收集的78个样本（每只动物平均3个样本）中，我们总共鉴定出6属胃肠道寄生虫，包括原生动物、线虫、棘头虫和绦虫。我们观察到26只个体的感染率很高（84%），最常见的寄生虫是 种（76.9%），其次是 种（38.5%）和 （11.5%）。我们仅在少数动物（3.8%）中发现了 和 种。此外，我们在大约三分之一的动物（34.6%）中观察到未鉴定的圆线虫。我们在成年年龄组中总共发现了6个寄生虫属，其寄生虫丰富度高于亚成年年龄组（5个）和幼年年龄组（3个）。圈养个体和自由放养个体之间、性别或年龄组之间的粪便虫卵/囊肿计数没有显著差异。自由放养群体的感染率高于圈养群体；然而，这种差异并不显著。圈养个体和自由放养个体共有的唯一属是 种。胃肠道寄生虫的高感染率以及两种群体中 的存在支持了先前对 物种研究的结果。这种高感染率可能与该地区的高湿度有关。对于自由放养群体，需要进一步研究以深入了解年龄和性别组之间寄生虫感染率和强度的差异。此外，我们的研究表明对每个个体进行连续采样可提高检测灵敏度。
