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首页> 外文期刊>Journal of Parasitology >SARCOCYSTIS CAFFERI N. SP (PROTOZOA: APICOMPLEXA) FROM THE AFRICAN BUFFALO (SYNCERUS CAFFER)
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SARCOCYSTIS CAFFERI N. SP (PROTOZOA: APICOMPLEXA) FROM THE AFRICAN BUFFALO (SYNCERUS CAFFER)

机译：非洲水牛（SYNCERUS CAFFER）的SARCOCYSTIS CAFFERI N.SP（原生动物：APICOMPLEXA）

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Sarcocystis infections have been reported from the African buffalo (Syncerus caffer), but the species have not been named. Here we propose a new name Sarcocystis cafferi from the African buffalo. Histological examination of heart (92), skeletal muscle (36), and tongue (2) sections from 94 buffalos from the Greater Kruger National Park, South Africa, and a review of the literature revealed only 1 species of Sarcocystis in the African buffalo. Macrocysts were up to 12 mm long and 6 mm wide and were located in the neck muscles and overlying connective tissue. They were pale yellow; shaped like a lychee fruit stone or cashew nut; turgid or flaccid and oval to round (not fusiform). By light microscopy (LM) the sarcocyst wall was relatively thin. By scanning electron microscopy (SEM), the sarcocyst wall had a mesh-like structure with irregularly shaped villar protrusions (vp) that were of different sizes and folded over the sarcocyst wall. The entire surfaces of vp were covered with papillomatous structures. By transmission electron microscopy (TEM), the sarcocyst wall was up to 3.6 mu m thick and had highly branched villar protrusions that were up to 3 mu m long. The villar projections contained filamentous tubular structures, most of which were parallel to the long axis of the projections, but some tubules criss-crossed, especially at the base. Granules were absent from these tubules. Longitudinally cut bradyzoites were 12.1x2.7 mu m in size, had a long convoluted mitochondrion, and only 2 rhoptries. Phylogenetic analysis of 18S rRNA and cytochrome C oxidase subunit 1 (cox1) gene sequences indicated that this Sarcocystis species is very closely related to, but distinct from, Sarcocystis fusiformis and Sarcocystis hirsuta. Thus, morphological findings by LM, SEM, and TEM together with molecular phylogenetic data (from 18S rRNA and cox1) confirm that the Sarcocystis species in the African buffalo is distinct from S. fusiformis and has therefore been named Sarcocystis cafferi.
机译：非洲水牛（Syncerus caffer）曾报告有肉孢子囊菌感染，但尚未命名。在这里，我们提出了非洲水牛的新名称Sarcocystis cafferi。对来自南非大克鲁格国家公园的94头水牛的心脏（92），骨骼肌（36）和舌头（2）切片进行组织学检查，并对文献进行审查后发现，非洲水牛中仅存在1种肉囊藻。大囊长至12毫米长，宽6毫米，位于颈部肌肉和上覆结缔组织中。他们是淡黄色的。形状像荔枝果核或腰果;卵圆形或松弛，卵圆形到圆形（不是梭形）。通过光学显微镜（LM），肌囊壁相对较薄。通过扫描电子显微镜（SEM），囊肿壁具有网状结构，其具有不规则形状的villar突起（vp），该突起具有不同大小并折叠在囊肿壁上。 vp的整个表面都覆盖有乳头状结构。通过透射电子显微镜（TEM），肌囊壁厚至3.6μm，并且具有高度分支的维拉尔突起，其长达3μm。 Villar突起包含丝状管状结构，大多数平行于突起的长轴，但有些小管纵横交错，尤其是在底部。这些小管中没有颗粒。纵向切开的缓殖子的大小为12.1x2.7微米，线粒体长而曲折，只有2个花序。对18S rRNA和细胞色素C氧化酶亚基1（cox1）基因序列的系统发育分析表明，该Sarcocystis物种与Suscocystis fusiformis和Sarcocystis hirsuta非常紧密相关，但有区别。因此，通过LM，SEM和TEM的形态学发现以及分子系统发育数据（来自18S rRNA和cox1）证实，非洲水牛中的肉囊藻属物种不同于钩状葡萄球菌，因此被命名为酒渣藻。

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