Instituto Federal Catarinense - IFC Araquari, Campus Araquari, Araquari, SC, Brasil.
Programa de Pós-graduação em Ciência Animal, Universidade do Estado de Santa Catarina - UDESC, Lages, SC, Brasil.
Rev Bras Parasitol Vet. 2021 Sep 6;30(4):e011821. doi: 10.1590/S1984-29612021071. eCollection 2021.
Ascocotyle (Phagicola) longa is an etiological agent of human phagicolosis. Mugilids are the second intermediate host, the first being Heleobia australis, and mugilids predatory birds and mammals are its definitive hosts. The occurrence of cysts holding A. longa metacercariae is described in mugilids with a prevalence of up to 100%. The wide geographical distribution of A. longa and its intermediate hosts coupled with the rise in the consumption of raw or poorly cooked fish may elevate the risk of human infection. Therefore, in this study, we aimed to verify the distribution pattern of cysts holding A. longa in mugilids. The tissue and organ samples of these fish were processed in a domestic blender and examined under a stereoscopic microscope to identify the cysts holding the digenetic metacercariae. Of the 24 (100%) fish samples that were analyzed, 12 of Mugil curema and 12 of Mugil liza possessed cysts holding A. longa metacercariae. Digenetic cysts were identified to be present in the gills, heart, stomach, liver, intestines, mesentery, and muscular tissues collected from M. curema and M. liza. Conclusively, in M. curema, the cysts holding A. longa metacercariae were found to be distributed randomly throughout the fish body in almost every tissue and organ that was examined.
长棘旋螺（Phagicola）是人类旋毛虫病的病原体。梭鱼是第二中间宿主，第一中间宿主是白姑鱼，而猛禽类和哺乳类动物是终末宿主。在感染率高达 100%的梭鱼中发现了含有长棘旋螺囊蚴的囊肿。长棘旋螺及其中间宿主的广泛地理分布，加上人们对生的或未煮熟的鱼的消费增加，可能会增加人类感染的风险。因此，在这项研究中，我们旨在验证含有长棘旋螺囊蚴的囊肿在梭鱼中的分布模式。这些鱼的组织和器官样本在国内搅拌机中处理，并在立体显微镜下检查，以鉴定含有双生的尾蚴的囊肿。在分析的 24 个（100%）鱼样本中，12 个 M. curema 和 12 个 M. liza 具有含有长棘旋螺尾蚴的囊肿。在从 M. curema 和 M. liza 采集的鳃、心脏、胃、肝脏、肠、肠系膜和肌肉组织中鉴定出双生的囊肿。总之，在 M. curema 中，含有长棘旋螺尾蚴的囊肿被发现分布在鱼体的几乎每个组织和器官中，而且分布是随机的。
