Reichard Mason V, Torretti Luigi, Snider Timothy A, Garvon Jason M, Marucci Gianluca, Pozio Edoardo
Department of Veterinary Pathobiology, Center for Veterinary Health Science, Oklahoma State University, Stillwater, OK 74078, USA.
Parasitol Res. 2008 Aug;103(3):657-61. doi: 10.1007/s00436-008-1028-y. Epub 2008 Jun 1.
Infection of Trichinella spp. is common among animals in the Canadian Arctic. We determined the prevalence of Trichinella spp. infection in wolverines (Gulo gulo) from Nunavut, Canada. Diaphragms from 41 wolverines were examined by artificial digestion. Trichinella spp. larvae were detected in 36 (87.8%) examined animals. Trichinella T6 was detected in 33 (91.7%), Trichinella nativa in only one (2.8%), and a mixed Trichinella T6 and T. nativa infections were detected in two (5.6%) wolverines. This is the first report of Trichinella spp. infection in wolverines from Nunavut and the first report of sympatric Trichinella T6 and T. nativa in any host. The high prevalence of Trichinella spp. infection in combination with the natural history of wolverines suggests that the mustelid may be a key species in the natural cycle of these parasites in Arctic and Subarctic areas.
旋毛虫属感染在加拿大北极地区的动物中很常见。我们测定了来自加拿大努纳武特地区的狼獾（貂熊）体内旋毛虫属的感染率。通过人工消化法检查了41只狼獾的膈肌。在36只（87.8%）被检查的动物中检测到旋毛虫属幼虫。在33只（91.7%）中检测到旋毛虫T6，仅在1只（2.8%）中检测到本地旋毛虫，在2只（5.6%）狼獾中检测到旋毛虫T6和本地旋毛虫的混合感染。这是关于努纳武特地区狼獾感染旋毛虫属的首次报告，也是在任何宿主中首次报告同时存在旋毛虫T6和本地旋毛虫。旋毛虫属感染的高发生率以及狼獾的自然史表明，这种鼬科动物可能是北极和亚北极地区这些寄生虫自然循环中的关键物种。
