Morphological and Phylogenetic Analyses of Ceratomyxa tessaloniensis n. sp. In Astyanax mexicanus De Fillipi, 1853 (Characiformes: Characidae) from the Flexal River, Tessalônica Community, Amapá, Amazon, Brazil

IF 1.5 3区农林科学 Q4 PARASITOLOGY

Acta Parasitologica Pub Date : 2025-01-27 DOI:10.1007/s11686-024-00958-0

Saturo Cardoso, Abthyllane Amaral de Carvalho, Roger Leomar da Silva Ferreira, Jhonata Eduard Farias de Oliveira, Rafaela Franco de Araújo, Lilia Suzane de Oliveira Nascimento, José Ledamir Sindeaux Neto, Marcela Nunes Videira, Michele Velasco

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Abstract

Purpose

This work described a new species of Ceratomyxa, based on morphological and phylogenetic analyzes of myxospores collected from the gallbladder of the fish Astyanax mexicanus.

Methods

Sixty-two specimens were captured, between December 2022 and February 2024, in the Flexal River, in the community of Tessalônica, state of Amapá. The specimens were transported alive to the Laboratory of Morphophysiology and Animal Health, at the State University of Amapá, where the studies were carried out.

Results

Eleven specimes of A. mexicanus was parasitized with Ceratomyxa tessaloniensis n. sp. Morphological and morphometric analyses revealed strongly arched spores that measured 3.13 ± 0.5 μm in length and 12.18 ± 1.9 μm in thickness with a posterior angle of 74º ± 10.6º and two polar capsules measuring 1.74 ± 0.1 μm long and 1.5 ± 0.16 μm wide. The partial sequence of the 18 S gene from spores of Ceratomyxa tessaloniensis n. sp., comprised 932 base pairs.

Conclusion

Phylogenetic analysis grouped Ceratomyxa tessaloniensis n. sp., with strong nodal support for the exclusive clade of freshwater species, being a new species described for the State of Amapá, the first described in A. mexicanus and the first species with the presence of non-wormlike plasmodia in South America.

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巴西亚马逊河amapap Tessalônica群落Flexal河Astyanax mexicanus De Fillipi中tessaloniensis n. sp.的形态和系统发育分析（特征：特征科）。

目的：通过对墨西哥Astyanax （Astyanax mexicanus）鱼胆囊粘液孢子的形态和系统发育分析，描述了一新种角鼻虫属。方法：于2022年12月至2024年2月，在阿马ap州Tessalônica社区Flexal河捕获62只标本。这些标本被活体运送到阿马普州立大学形态生理学和动物卫生实验室，在那里进行了研究。结果：11个墨西哥角蝇被特萨洛尼卡角蝇（Ceratomyxa tessaloniensis n. sp）寄生，形态学和形态计量学分析显示，孢子长3.13±0.5 μm，厚12.18±1.9 μm，后角74º±10.6º，有2个长1.74±0.1 μm，宽1.5±0.16 μm的极性蒴果。从tessaloniensis Ceratomyxa n. sp.孢子中获得18s基因的部分序列，包含932个碱基对。结论：系统发育分析将Ceratomyxa tessaloniensis n. sp.归为淡水物种的唯一分支，具有很强的节点支持，是在amapap州发现的新种，在a. mexicanus中首次发现，在南美洲首次发现非虫状疟原虫。

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来源期刊

Acta Parasitologica 医学-寄生虫学

CiteScore

3.10

自引率

6.70%

发文量

149

审稿时长

6-12 weeks

期刊介绍： Acta Parasitologica is an international journal covering the latest advances in the subject. Acta Parasitologica publishes original papers on all aspects of parasitology and host-parasite relationships, including the latest discoveries in biochemical and molecular biology of parasites, their physiology, morphology, taxonomy and ecology, as well as original research papers on immunology, pathology, and epidemiology of parasitic diseases in the context of medical, veterinary and biological sciences. The journal also publishes short research notes, invited review articles, book reviews. The journal was founded in 1953 as "Acta Parasitologica Polonica" by the Polish Parasitological Society and since 1954 has been published by W. Stefanski Institute of Parasitology of the Polish Academy of Sciences in Warsaw. Since 1992 in has appeared as Acta Parasitologica in four issues per year.