Taira K, Ueda M, Ooi H K
Laboratory of Parasitology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan.
Helminthologia. 2020 Nov 19;57(4):384-387. doi: 10.2478/helm-2020-0047. eCollection 2020 Dec.
The larvae of the genus can cause larva migrans in mammals and birds. This study investigated the larval migration of , the roundworm of kinkajou (), in chickens and the associated clinical manifestations of the host. Thirty-six 3-week-old chickens divided into 6 groups were orally inoculated with 3,000 eggs/chick. Each group of chicken was necropsied at days 1, 2, 3, 7, 30 and 90 PI (post inoculation), and the number of larvae in various organs were counted until day 90 PI. No clinical signs were observed in chickens during the study. Larvae were detected from the liver, lungs or breast-muscles of 13/36 (36.1%) chickens. The mean total number of larvae in the liver, lungs and breast-muscles at days 1, 2, 3, 7, 30 and 90 PI were 0.34, 0.17, 1.66, 1.01, 0.17 and 0, respectively. No larvae were found in the brain, eyes, hid-limb muscles, heart, kidneys and spleen. Although infectivity of larvae in egg-inoculated chickens was low, the present study demonstrated that larvae can migrate in chickens tissues up to day 30 PI. The result suggests that chickens can serve as a paratenic host for and may underline a public health importance of infection as a potential foodborne disease in humans.
该属幼虫可在哺乳动物和鸟类中引起幼虫移行症。本研究调查了蜜熊蛔虫( )幼虫在鸡体内的移行情况以及宿主的相关临床表现。将36只3周龄的鸡分成6组,每组鸡口服接种3000个 虫卵。在接种后第1、2、3、7、30和90天对每组鸡进行剖检,统计各器官中的幼虫数量直至接种后90天。在研究过程中未观察到鸡出现临床症状。在36只鸡中有13只(36.1%)的肝脏、肺或胸肌中检测到幼虫。接种后第1、2、3、7、30和90天,肝脏、肺和胸肌中幼虫的平均总数分别为0.34、0.17、1.66、1.零1、0.17和0。在脑、眼、后肢肌肉、心脏、肾脏和脾脏中未发现幼虫。尽管接种虫卵的鸡体内幼虫的感染力较低,但本研究表明 幼虫可在鸡组织中移行至接种后30天。结果表明鸡可作为 的转续宿主,这可能凸显了 感染作为人类潜在食源性疾病的公共卫生重要性。