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首页> 外文期刊>Parasitology >The red fox (Vulpes vulpes) and the arctic fox (Vulpes lagopus) are definitive hosts of Sarcocystis alces and Sarcocystis hjorti from moose (Alces alces).
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The red fox (Vulpes vulpes) and the arctic fox (Vulpes lagopus) are definitive hosts of Sarcocystis alces and Sarcocystis hjorti from moose (Alces alces).

机译：赤狐（Vulpes vulpes）和北极狐（Vulpes lagopus）是来自驼鹿（Alces alces）的Sarcocystis alces和Harcocystis hjorti的确定宿主。

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The aim of this study was to determine whether foxes might act as definitive hosts of Sarcocystis alces in moose. In 2 experiments, 6 silver foxes (Vulpes vulpes) and 6 blue foxes (Vulpes lagopus) were fed muscle tissue from moose containing numerous sarcocysts of S. alces, and euthanazed 7-28 days post-infection (p.i.). Intestinal mucosal scrapings and faecal samples were screened microscopically for Sarcocystis oocysts/sporocysts, which were identified to species by means of species-specific primers and sequence analysis targeting the ssu rRNA gene. All foxes in both experiments became infected with Sarcocystis; the oocysts were fully sporulated by 14 days p.i., containing sporocysts measuring 14-15 x 10 microm. Molecular identification revealed that the oocysts/sporocysts belonged to 2 species, S. alces and Sarcocystis hjorti, although sarcocysts of S. hjorti were only identified in moose subsequent to the infection of foxes. In the first experiment, all 8 foxes also became infected with a Hammondia sp. derived from moose, shedding unsporulated, subspherical oocysts, measuring 10-12 microm in diameter, from 6-7 days p.i. onwards. The study proved that canids (the red fox and arctic fox) are definitive hosts for S. alces and S. hjorti, as had been inferred from the phylogenetic position of these species.
机译：这项研究的目的是确定狐狸是否可以作为麋鹿中的Sarcocystis alces的确定宿主。在2个实验中，对6只银狐（Vulpes vulpes）和6只蓝狐（Vulpes lagopus）从含有无数S. alces肌囊的驼鹿中获取肌肉组织，并在感染后7-28天实施安乐死（p.i.）。显微镜下检查肠粘膜刮屑和粪便样品中的囊藻卵囊/孢子囊，通过物种特异性引物和靶向ssu rRNA基因的序列分析对物种进行鉴定。在两个实验中所有的狐狸都感染了肉囊藻。卵囊在p.i.的第14天完全形成孢子，其中含有14-15 x 10微米的孢子囊。分子鉴定表明，卵囊/孢子囊囊囊菌属于两个物种，即S. alces和Harcocystis hjorti，尽管仅在狐狸被感染后才在驼鹿中发现了S. hjorti的卵囊。在第一个实验中，所有8只狐狸也都感染了Hammondia sp。从驼鹿中衍生出来，散落在6-7天后，直径为10-12微米的未孢子状球形卵囊的脱落。向前。该研究证明了犬科动物（红狐和北极狐）是S. alces和S. hjorti的确定宿主，正如从这些物种的系统发育位置推断的那样。

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