Phylogenetic assessment of Plasmodium (Saurocytozoon) tupinambi comb. nov. (Haemosporida, Plasmodiidae) in golden tegu lizards: shedding light on a long-standing Haemosporida taxonomic puzzle.

IF 2.4 3区 医学 Q2 PARASITOLOGY
Amanda M Picelli, M Andreína Pacheco, Angie D Gonzalez, Pedro H O Pereira, Oscar A Rodriguez Fandiño, Lady J Correa Higuera, Francisco C Ferreira, Igor L Kaefer, Felipe A C Pessoa, Lúcio A Viana, Gediminas Valkiūnas, Ananías A Escalante, Erika M Braga, Nubia E Matta
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Abstract

Haemosporidians constitute a monophyletic group of vector-borne parasites that infect a wide range of vertebrate hosts, including Neotropical lizards. The remarkable diversity of these host-parasite associations and inadequate research on certain parasite groups have resulted in controversial haemosporidian taxonomy. Herein, we rediscover erythrocytic and non-erythrocytic haemosporidians infecting golden tegus (Tupinambis teguixin) from Brazil and Colombia. The erythrocyte-inhabiting parasite belongs to Plasmodium sp., and the non-erythrocytic form was identified as Saurocytozoon tupinambi, previously attributed to the Family Leucocytozoidae. These non-pigmented haemosporidian parasites do not multiply in the blood. The relationships between the Saurocytozoon and Leucocytozoidae species were discussed for many years, especially during the 1970s. However, cytochrome b (cytb) sequences and the mitochondrial genomes recovered for this species strongly support classifying this parasite as a Plasmodium taxon. Therefore, we proposed a new combination for this parasite, Plasmodium (Saurocytozoon) tupinambi comb. nov., where Saurocytozoon is retained as a subgenus due to its distinct morphology. These results reinforce that a broader definition of Plasmodiidae must include saurian parasites that develop non-pigmented leucocytozoid-like gametocytes.

梳状冠状疟原虫的系统发育评价。11 .金蜥中的(血孢子虫,疟原虫科):揭示了一个长期存在的血孢子虫分类难题。
血孢子虫是一种单系病媒寄生虫,可感染多种脊椎动物宿主,包括新热带蜥蜴。这些宿主-寄生虫关联的显著多样性和对某些寄生虫类群的研究不足导致了有争议的血孢子虫分类。在此,我们重新发现了感染巴西和哥伦比亚金龟(Tupinambis teguixin)的红细胞和非红细胞血红虫。这种寄生于红细胞的寄生虫属于疟原虫,而非红细胞的形式被鉴定为托皮纳姆梭罗细胞原虫,以前被归为白细胞科。这些非色素的血孢子虫寄生虫不会在血液中繁殖。在20世纪70年代,特别是在20世纪70年代,对蜥胞虫科和白细胞虫科物种之间的关系进行了多年的讨论。然而,该物种的细胞色素b (cytb)序列和线粒体基因组的恢复强烈支持将该寄生虫归类为疟原虫分类群。因此,我们提出了一种新的寄生虫组合,即冠状体(Plasmodium (Saurocytozoon) tupinambi comb)。十一月,其中Saurocytozoon保留为一个亚属,由于其独特的形态。这些结果强化了疟原虫科更广泛的定义必须包括产生非色素样白细胞样配子体的蜥蜴寄生虫。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Parasitology
Parasitology 医学-寄生虫学
CiteScore
4.80
自引率
4.20%
发文量
280
审稿时长
3-8 weeks
期刊介绍: Parasitology is an important specialist journal covering the latest advances in the subject. It publishes original research and review papers on all aspects of parasitology and host-parasite relationships, including the latest discoveries in parasite biochemistry, molecular biology and genetics, ecology and epidemiology in the context of the biological, medical and veterinary sciences. Included in the subscription price are two special issues which contain reviews of current hot topics, one of which is the proceedings of the annual Symposia of the British Society for Parasitology, while the second, covering areas of significant topical interest, is commissioned by the editors and the editorial board.
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