Dracz Ruth Massote, Ribeiro Vinicius Marques Antunes, Pereira Cintia Aparecida de Jesus, Lima Walter Dos Santos
Laboratório de Helmintologia Veterinária, Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil.
Rev Bras Parasitol Vet. 2016 Jul-Sep;25(3):364-7. doi: 10.1590/S1984-29612016021. Epub 2016 Apr 12.
Fasciola hepatica is a parasite that affects the hepatic ducts of several species of domestic and wild vertebrates, causing huge economic losses to livestock rearing worldwide. Reports on occurrences of F. hepatica in capybaras are an important epidemiological aspect of this disease, since these rodents can be a source of contamination for other animals and humans. In the present study, conducted in a rural area of the municipality of Confins, Minas Gerais, fresh feces from capybaras were collected from the ground near a lagoon at the edge of the Ribeirão da Mata river. These were examined using the technique of four metal sieves. F. hepatica eggs were recovered. This trematode species was confirmed by observing morphological characteristics and measuring the eggs recovered from the capybara feces, and through experimental infection of Lymnaea columella (Say, 1817) by miracidia from these eggs and subsequent infection of C57/BL06 mice with metacercariae originating from these infected mollusks. The data suggest the occurrence of natural cycle of F. hepatica in this region and provide a warning that expansion of the geographical distribution of this parasite by means of this rodent is possible. It is therefore important to adopting measures for epidemiological control of this helminthiasis.
肝片吸虫是一种寄生于多种家养和野生脊椎动物肝管的寄生虫，给全球畜牧业造成巨大经济损失。关于水豚感染肝片吸虫的报道是该疾病重要的流行病学内容，因为这些啮齿动物可能成为其他动物和人类的传染源。在本研究中，于米纳斯吉拉斯州孔芬斯市的一个农村地区，从里贝朗达马塔河岸边一个泻湖附近的地面收集水豚的新鲜粪便。采用四层金属筛技术对其进行检查，发现了肝片吸虫卵。通过观察从水豚粪便中回收的虫卵的形态特征和测量虫卵大小，并通过用这些虫卵中的毛蚴感染小柱椎实螺（Say，1817），随后用源自这些受感染软体动物的尾蚴感染C57/BL06小鼠，确认了这种吸虫种类。数据表明该地区存在肝片吸虫自然循环，并警示这种寄生虫有可能借助这种啮齿动物扩大地理分布范围。因此，采取措施对这种蠕虫病进行流行病学控制很重要。
