Oxysomatium brevispiculum n. sp. (Nematoda: Cosmocercidae) from Amphisbaena alba Linnaeus (Squamata, Amphisbaenidae) in the Cerrado Biome from Brazil.

IF 1 4区医学 Q4 PARASITOLOGY

Systematic Parasitology Pub Date : 2024-01-11 DOI:10.1007/s11230-023-10129-w

Paula Araujo Gonçalves, Fabiano Matos Vieira, Gabriela Felix-Nascimento, Sueli de Souza Lima, Luís Cláudio Muniz-Pereira

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Abstract

In the present study, we describe Oxysomatium brevispiculum n. sp. (Ascaridida: Cosmocercidae) parasitizing Amphisbaena alba Linnaeus (Squamata: Amphisbaenidae) in the municipality of Uberlândia, Cerrado Biome, Minas Gerais, Brazil. Oxysomatium brevispiculum n. sp. differs from its congeners by having shorter spicules and by the number and arrangement of caudal papillae. The males of the new species have a precloacal unpaired papilla and can be easily distinguished from O. caucasicum in which this morphological trait is absent. Oxysomatium brevispiculum n. sp. differs from the other three species of the genus by the number and arrangement of caudal papillae, with 13 pairs + 1 unpaired precloacal papilla, arrangement 8+1:2:3, while O. brevicaudatum has 14-16 pairs +1 unpaired papilla, and 7-9+1:1:6 arrangement, O. petrolinensis has 16 pairs +1 unpaired papilla, and 8+1:1:7 arrangement, and O. dollfusi with 15-16 pairs +1 unpaired papilla, and 8-9+1:1:6 arrangement. Oxysomatium brevispiculum n. sp. is the fifth species of this genus, the second species in a Neotropical host, and the first species of this genus described in amphisbaenid hosts. In addition, the present study provides an identification key for the species of this genus.

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Oxysomatium brevispiculum n. sp. (Nematoda: Cosmocercidae) from Amphisbaena alba Linnaeus (Squamata, Amphisbaenidae) from Cerrado Biome from Brazil.

在本研究中，我们描述了寄生于巴西米纳斯吉拉斯州Cerrado生物群落Uberlândia市Amphisbaena alba Linnaeus（有鳞目：Amphisbaenidae）的Oxysomatium brevispiculum n. sp.（蛔虫纲：Cosmocercidae）。Oxysomatium brevispiculum n. sp.与其同属物种的不同之处在于其刺较短，尾乳突的数量和排列方式也不同。新种的雄性有一个前叶不配对的乳头，很容易与没有这种形态特征的 O. caucasicum 区分开来。Oxysomatium brevispiculum n. sp.与该属其它三个种的区别在于尾乳头的数量和排列方式，其尾乳头为 13 对 + 1 个不配对的前叶乳头，排列方式为 8+1:2:3，而 O.petrolinensis有16对+1个不配对的乳头，排列方式为8+1:1:7，而O. dollfusi有15-16对+1个不配对的乳头，排列方式为8-9+1:1:6。Oxysomatium brevispiculum n. sp.是该属的第 5 个种，是新热带寄主中的第 2 个种，也是该属在两栖类寄主中描述的第 1 个种。此外，本研究还提供了该属物种的鉴定检索表。

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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.