Chagas de Souza Darlison, Ferreira de Sousa Luciclara, Coelho Tassio Alves, Corrêa Lincoln Lima
Programa de Pós-graduação em Biodiversidade (PPGBEES), Instituto de Ciências e Tecnologia das Águas - ICTA, Universidade Federal do Oeste do Pará. Av. Mendonça Furtado, nº 2946, Fátima, CEP 68040-470, Santarém, PA, Brasil.
Instituto de Ciências e Tecnologia das Águas - ICTA, Universidade Federal do Oeste do Pará - UFOPA, Av. Mendonça Furtado, nº 2946, Fátima, CEP 68040-470, Santarém, Pará, Brasil.
Ann Parasitol. 2020;66(2):243-249. doi: 10.17420/ap6602.261.
Clinostomid trematodes are only widely studied due to the ability to infect their metacercariae, which can affect amphibians, fish, snakes and occasionally mammals, with occasional records in humans. The Loricariids constitute the most diverse family of neotropical fish, with more than 800 registered species. They present a large heterogeneity of colors and body forms that reflect its high degree of ecological specialization and importance on economic aspects such as ornamentation and food. In spite of these factors, studies involving the diversity of parasitic fauna that affect in these fish is still scarce. In this aspect, our study presents the first record of occurrence of the parasite Clinostomum marginatum in association with the Loricariid Pterygoplichthys pardalis in the Amazon region of Brazil. In September 2018, in the river mouth of Tapajós river, tributary of Amazon river, 32 specimens of P. pardalis and six specimens of Aphanotorulus emarginatus were captured. The parasitological studies revealed the occurrence of metacercariae of C. marginatum in association with P. pardalis, representing a prevalence of 12.5% with a mean abundance of 0.18 and a medium intensity of infection of 1.5. No C. marginatum parasitism was observed in A. emarginatus.
由于其尾蚴具有感染能力，斜睾科吸虫才得到广泛研究，这些尾蚴可感染两栖动物、鱼类、蛇类，偶尔也会感染哺乳动物，人类身上偶尔也有感染记录。吸甲鲶科是新热带鱼类中种类最多的一科，已登记的物种超过800种。它们呈现出颜色和体型的高度多样性，这反映了其高度的生态专业化以及在装饰和食物等经济方面的重要性。尽管如此，关于影响这些鱼类的寄生动物多样性的研究仍然很少。在这方面，我们的研究首次记录了在巴西亚马逊地区，寄生吸虫边缘斜睾吸虫与吸甲鲶科豹纹翼甲鲶的共存情况。2018年9月，在亚马逊河支流塔帕若斯河的河口，捕获了32只豹纹翼甲鲶标本和6只缺须盆唇鲶标本。寄生虫学研究发现，边缘斜睾吸虫的尾蚴与豹纹翼甲鲶共存，感染率为12.5%，平均丰度为0.18，平均感染强度为1.5。在缺须盆唇鲶中未观察到边缘斜睾吸虫寄生现象。
