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首页> 外文期刊>Journal of Parasitology >A New Species of Cryptosporidium (Apicomplexa: Cryptosporidiidae) from Eastern Grey Kangaroos (Macropus giganteus)
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A New Species of Cryptosporidium (Apicomplexa: Cryptosporidiidae) from Eastern Grey Kangaroos (Macropus giganteus)

机译：东部灰袋鼠（Macropus giganteus）的隐孢子虫（Apicomplexa：Cryptosporidiidae）的新种。

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摘要

Cryptosporidium macropodum n. sp is described. Oocysts of C. macropodum from the feces of kangaroos (Macropus spp.) are morphologically indistinguishable from other mammalian Cryptosporidium species, including C. parvum, C. hominis, C. suis, and C. canis. The oocysts are fully sporulated on excretion, lack sporocysts, and have an average width of 4.9 μm (4.5– 6.0), a length of 5.4 μm (5.0–6.0), and a length:width ratio of 1.1. Phylogenetic analyses of the 18S ribosomal RNA, actin, and heat shock protein 70 (HSP70) loci demonstrate that C. macropodum is genetically distinct from all described Cryptosporidium species, including others found in marsupials. The parasite seems to be highly host-specific, because it has been found only in marsupials to date. Therefore, based on biological and molecular data, we consider C. macropodum a new species.
机译：隐孢子虫sp被描述。袋鼠粪便（Macropus spp。）的巨脚梭菌的卵囊在形态上与其他哺乳动物隐孢子虫种类（包括小隐孢子虫，人形隐孢子虫，猪隐孢子虫和犬隐孢子虫）在形态上没有区别。卵囊在排泄时完全形成孢子，缺乏孢子囊，平均宽度为4.9μm（4.5–6.0），长度为5.4μm（5.0–6.0），长宽比为1.1。对18S核糖体RNA，肌动蛋白和热休克蛋白70（HSP70）基因座的系统进化分析表明，巨脚梭菌在遗传上不同于所有描述的隐孢子虫物种，包括在有袋动物中发现的其他物种。该寄生虫似乎是高度宿主特异性的，因为迄今为止仅在有袋动物中发现过。因此，根据生物学和分子数据，我们认为大角梭菌是新物种。

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