Echinococcus multilocularis on Svalbard:: introduction of an intermediate host has enabled the local life-cycle
Echinococcus multilocularis on Svalbard:: introduction of an intermediate host has enabled the local life-cycle
复制标题
DOI：
10.1017/s0031182001008800
复制
发表时间：
2001-12-01
期刊：
影响因子：
2.4
通讯作者：
Yoccoz, NG
中科院分区：
文献类型：
--
作者：
Henttonen, H;Fuglei, E;Yoccoz, NG
在挪威北极的斯瓦尔巴特群岛，多房棘球绦虫是首次报道。这一新发现很有趣，因为多房田鼠的建立是由于最近人类引入了它的中间宿主--斯瓦尔巴群岛的兄弟田鼠--玫瑰田鼠。寄生虫本身可能已经自然转移到斯瓦尔巴特群岛，因为它的最终宿主-北极狐狸Alopex lagopus在西伯利亚多房棘球绦虫的来源地和斯瓦尔巴特群岛之间的迁徙。我们报告了1999年和2000年8月捕获的224只田鼠的宏观确定的多房棘球绦虫流行率，该流行率是有记录以来在中间宿主中最高的之一，并且在越冬雄性中接近100%依赖于宿主的年龄和性别。斯瓦尔巴群岛的田鼠-北极狐狸-E.多房系统的高流行率和简单性使其成为进一步流行病学研究的杰出模式系统。
The taeniid tapeworm Echinococcus multilocularis is here reported for the first time at the Svalbard Archipelago in the Norwegian Arctic. This new finding is interesting because the establishment of E. multilocularis is due to a recent anthropogenic introduction of its intermediate host - the sibling vole Microtus rossiaemeridionalis at Svalbard. The parasite itself has probable,, become naturally transferred to Svalbard due to migratory movements of its final host - the arctic fox Alopex lagopus between source areas for E. multilocularis in Siberia and Svalbard. We report macroscopically determined prevalence of E. multilocularis from a sample of 224 voles trapped in August in 1999 and 2000, The prevalence was among the highest ever recorded in intermediate hosts and was dependent on age and sex of the hosts approaching 100% in over-wintered males. The high prevalence and the simplicity of the vole - arctic fox - E. multilocularis system at Svalbard makes it an eminent model system for further epidemiological studies.