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首页> 外文期刊>Journal of Parasitology >Two new Trypanosoma species from African birds, with notes on the taxonomy of avian trypanosomes.
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Two new Trypanosoma species from African birds, with notes on the taxonomy of avian trypanosomes.

机译：来自非洲鸟类的两个新的锥虫物种，其中记载了禽锥虫的分类学。

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摘要

Trypanosoma anguiformis n. sp. and Trypanosoma polygranularis n. sp. are described from the African olive sunbird, Cyanomitra olivacea, and Latham's forest francolin, Francolinus lathami, respectively, based on the morphology of their hematozoic trypomastigotes and partial sequences of the small subunit ribosomal RNA gene. Both new species belong to the group of small non-striated avian trypanosomes (<30 micro m in length on average) with the kinetoplast situated close to the posterior end of the body. Trypanosoma anguiformis can be readily distinguished from other small avian trypanosomes due to its markedly attenuated (snake-shaped) form of the hematozoic trypomastigotes and the dumbbell-shaped nucleus of the parasite. Trypanosoma polygranularis is readily distinguishable due to the markedly off-center (anteriorly) located nucleus, numerous azurophilic granules that are arranged in a line following the undulating membrane, and the large kinetoplast (with an area up to 1.7 micro m2 [1.1 micro m2 on average]). Illustrations of hematozoic trypomastigotes of the new species are given, and DNA lineages associated with these parasites are reported. The current situation in species taxonomy of avian trypanosomes is discussed. We call for the redescription of valid species of avian trypanosomes from their type vertebrate hosts and type localities by using morphological and polymerase chain reaction-based techniques as an initial essential step towards revising the species composition of avian trypanosomes and reconstructing the taxonomy of these organisms.Digital Object Identifier http://dx.doi.org/10.1645/GE-2796.1
机译：锥虫锥虫 sp。和多粒锥虫 n。 sp。分别根据非洲橄榄形太阳鸟 Cyanomitra olivacea 和Latham的森林francolin Francolinus lathami 进行了描述，分别基于它们的造血锥虫和小亚基的部分序列核糖体RNA基因。这两个新物种均属于小型非纹状鸟类锥虫体（平均长度<30微米），动塑料位于人体的后端附近。 锥虫锥虫可以轻易地与其他小型禽锥虫体区分开，这是由于其血生的锥虫的显着减毒（蛇形）形式和寄生虫的哑铃形核。 多粒锥虫由于明显偏心（位于前）的核，排列在起伏膜后成一直线的许多嗜氮颗粒和大的动植物体（面积最大为1.7）而易于区分微米m 2 [平均1.1微米m 2 ]）。给出了新物种的造血锥虫的插图，并报道了与这些寄生虫相关的DNA谱系。讨论了鸟类锥虫的物种分类学的现状。我们呼吁通过使用基于形态学和聚合酶链反应的技术从其脊椎动物类型和宿主类型中重新确定禽锥虫的有效物种，这是修改禽锥虫的物种组成并重建这些生物的分类的第一步。数字对象标识符http://dx.doi.org/10.1645/GE-2796.1

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