A new species of Cruzia (Nematoda: Cosmocercoidea, Kathlaniidae) parasitic in lizards from a threatened region of Argentina.

IF 1 4区医学 Q4 PARASITOLOGY

Systematic Parasitology Pub Date : 2024-11-22 DOI:10.1007/s11230-024-10204-w

Lorena G Ailán-Choke, Amanda L M Rosa, Cynthya E González, Felipe B Pereira

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Abstract

Cruzia Travassos, 1917 is a diverse genus of nematode parasites in amphibians, reptiles, and mammals. During a parasitological survey, specimens of Cruzia were found in the intestine of the lizards Ameiva ameiva (Linnaeus) and Teius teyou (Daudin) (Squamata: Teiidae) at the Chaco region, Formosa province, Argentina. A comparative analysis revealed that these nematodes represent a new species, named as Cruzia toba n. sp. The new species can be distinguished from the congeners based on the combination of the following features: presence 12-14 teeth per row in the pharynx, equatorial vulva in females, and number and arrangement of caudal papillae in males (11 pairs: 3 precloacal, 3 paracloacal, 5 postcloacal; plus a precloacal minute unpaired papilla). Cruzia toba n. sp. is closely related to C. lauroi Vieira, Gonçalves, Lima, Sousa, and Muniz-Pereira, 2020 a likewise parasite of lizards, regarding the length of spicules and the presence of an unpaired papilla in males, but differs from it in the position of the vulva, the size of the gubernaculum and in the number and arrangement of caudal papillae. This is the first report of a representative of Kathlaniidae parasitizing A. ameiva and T. teyou, and the first Cruzia infecting lizards from Argentina. The morphological affinities among species of Cruzia are mostly random, not allowing a morphological grouping of these parasites in relation to their host taxa, or geographic origin. Thus, the speciation process in Cruzia most likely occurred via host capture.

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寄生于阿根廷受威胁地区蜥蜴体内的一种新的 Cruzia（线虫纲：Cosmocercoidea，Kathlaniidae）。

Cruzia Travassos, 1917 是一种寄生于两栖类、爬行类和哺乳类动物体内的多种线虫属。在一次寄生虫学调查中，在阿根廷福莫萨省查科地区的蜥蜴 Ameiva ameiva (Linnaeus) 和 Teius teyou (Daudin) （有鳞目：Teiidae）的肠道中发现了 Cruzia 的标本。比较分析表明，这些线虫代表了一个新种，被命名为 Cruzia toba n. sp.。该新种可根据以下特征与同属种区分开来：咽部每行有 12-14 个牙齿，雌性有赤道外阴，雄性尾乳头的数量和排列（11 对：3 个前胸乳头、3 个副胸乳头、5 个后胸乳头；加上一个前胸微小的未配对乳头）。Cruzia toba n. sp.与 C. lauroi Vieira、Gonçalves、Lima、Sousa 和 Muniz-Pereira（2020 年，同样寄生于蜥蜴）在棘皮长度和雄性无配对乳头的存在方面关系密切，但在外阴的位置、脐带的大小以及尾乳头的数量和排列方面与之不同。这是首次报道 Kathlaniidae 的代表寄生于 A. ameiva 和 T. teyou，也是阿根廷首次报道 Cruzia 感染蜥蜴。Cruzia物种之间的形态亲缘关系大多是随机的，无法根据寄主类群或地理起源对这些寄生虫进行形态分组。因此，Cruzia 的物种分化过程很可能是通过捕获宿主实现的。

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

Systematic Parasitology 医学-寄生虫学

CiteScore

2.20

自引率

23.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Systematic Parasitology publishes papers on the systematics, taxonomy and nomenclature of the following groups: Nematoda (including plant-parasitic), Monogenea, Digenea, Cestoda, Acanthocephala, Aspidogastrea, Cestodaria, Arthropoda (parasitic copepods, hymenopterans, mites, ticks, etc.), Protozoa (parasitic groups), and parasitic genera in other groups, such as Mollusca, Turbelleria, etc. Systematic Parasitology publishes fully illustrated research papers, brief communications, and fully illustrated major revisions. In order to maintain high standards, all contributors describing new taxa are asked to state clearly where the holotype is deposited and to make paratypes available for examination by the referees. It is recognized that, in some cases, this may cause problems for the authors, but it is hoped that by adhering to this rule authors may be protected against rapid synonymy of their taxa, and the types will be preserved for posterity.