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首页> 外文期刊>Journal of Parasitology >Trypanosoma cf. varani in an Imported Ball Python (Python reginus) From Ghana
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Trypanosoma cf. varani in an Imported Ball Python (Python reginus) From Ghana

机译：锥虫cf.来自加纳的进口Ball Python（Python reginus）中的varani

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Peripheral blood from a ball python (Python reginus) imported from Ghana was cultured in Barbour-Stoenner-Kelly (BSK) medium for Borrelia spp. isolation, resulting in the prominent appearance of free, and clusters of, trypanosomes in a variety of morphological forms. The molecular phylogenetic characterization of these cultured trypanosomes, using the small subunit rDNA, indicated that this python was infected with a species closely related to Trypanosoma varani Wenyon, 1908, originally described in the Nile monitor lizard (Varanus niloticus) from Sudan. Furthermore, nucleotide sequences of glycosomal glyceraldehyde-3-phosphate dehydrogenase gene of both isolates showed few differences. Giemsa-stained blood smears, prepared from the infected python 8 mo after the initial observation of trypanosomes in hemoculture, contained trypomastigotes with a broad body and a short, free flagellum; these most closely resembled the original description of T. varani, or T. voltariae Macfie, 1919 recorded in a black-necked spitting cobra (Naja nigricollis) from Ghana. It is highly possible that lizards and snakes could naturally share an identical trypanosome species. Alternatively, lizards and snakes in the same region might have closely related, but distinct, Trypanosoma species as a result of sympatric speciation. From multiple viewpoints, including molecular phylogenetic analyses, reappraisal of trypanosome species from a wide range of reptiles in Africa is needed to clarify the relationship of recorded species, or to unmask unrecorded species.
机译：从加纳进口的球形蟒蛇（Python reginus）的外周血在Barbour-Stoenner-Kelly（BSK）培养基中培养，用于Borrelia spp。分离，导致各种形态学形式的锥虫的游离和簇状的突出外观。使用小的亚基rDNA对这些培养的​​锥虫的分子系统发育特征表明，这只蟒蛇感染了与1908年锥虫锥虫（Trypanosoma varani Wenyon）密切相关的物种，该物种最初在苏丹的尼罗河蜥蜴（Varanus niloticus）中描述。此外，两个分离株的糖体甘油醛-3-磷酸脱氢酶基因的核苷酸序列几乎没有差异。 Giemsa染色的血液涂片是在血液培养中首次观察到锥虫后，于8个月后从受感染的蟒蛇制备的，其中含有体形较宽的鞭毛鞭毛体和短而游离的鞭毛。这些最接近于1919年在加纳的黑颈随地吐痰眼镜蛇（Naja nigricollis）中记录的T. varani或T. voltariae Macfie的原始描述。蜥蜴和蛇很可能自然共享同一锥虫物种。另外，由于同胞物种形成，同一地区的蜥蜴和蛇可能具有密切相关但截然不同的锥虫物种。从多种角度，包括分子系统发育分析，需要对非洲各种爬行动物的锥虫物种进行重新评估，以阐明已记录物种之间的关系或揭露未记录物种。

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