Programa de Pós-graduação em Biologia Animal, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Rua Monteiro Lobato, 255, CEP 13083-862 Campinas, São Paulo, Brazil.
Programa de Pós-graduação em Biologia de Ambientes Aquáticos Continentais, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Avenida Itália km 8, CEP 96203-900, Rio Grande, Rio Grande do Sul, Brazil.
J Helminthol. 2023 Mar 24;97:e32. doi: 10.1017/S0022149X23000135.
In this study, a new dactylogyrid species is described from the gills of two ariid fish species of the Brazilian coast, and , by combining morphological characters with partial sequences. The new species can be distinguished from its congeners by the following morphological characteristics: a male copulatory organ (MCO), a coiled tubular shaft of around one counterclockwise ring, base with a sclerotized cap; MCO with tapered distal region; a T-shaped accessory piece; a vagina, a cup-shaped vaginal vestibule, slightly sclerotized; and a pharynx comprising a muscular, glandular bulb. Supplementary taxonomic data for from (type-host) are also presented and new sequences of spp. from other ariid fish from South America are provided. Phylogenetic analyses based on partial gene sequences placed n. sp. and as two early divergent lineages within from South America. Finally, a way to test the monophyly of and is also discussed, which may be useful for future studies.
在这项研究中，通过结合形态特征和部分序列，从巴西海岸的两种 Ariid 鱼类的鳃中描述了一种新的指环虫物种。新物种可以通过以下形态特征与其同属种区分开来：一个雄性交配器官（MCO），一个绕着一个逆时针环卷曲的管状轴，基部有一个硬化的帽；MCO 具有锥形的远端区域；一个 T 形附件；一个阴道，一个杯状阴道前庭，略微硬化；以及一个由肌肉、腺泡组成的咽。还提供了来自其他南美洲 Ariid 鱼类的 spp.的补充分类学数据。基于部分 基因序列的系统发育分析将新种和 放在南美洲的 内两个早期分化的谱系中。最后，还讨论了一种检验 和 的单系性的方法，这对于未来的研究可能是有用的。
