First report of a histozoic Henneguya (Cnidaria, Endocnidozoa) infecting a synbranchid potamodromous fish from South America: Morphostructural and biological data

IF 1.6 2区生物学 Q2 ZOOLOGY

Zoosystematics and Evolution Pub Date : 2023-07-05 DOI:10.3897/zse.99.105770

P. D. Mathews, O. Mertins, Luis L Espinoza, Julio C. Aguiar, Tiago Milanin

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引用次数: 0

Abstract

In this study, a Henneguya myxosporean species is described to infect an ecological, biological, and evolutionary important fish from Amazon biome. The myxosporean was found in the skin of only one specimen of marbled swamp eel, Synbranchus marmoratus caught in a small stream from Peruvian Amazon floodplain. Mature myxospores have ovoid shape from the valvular view, measuring 32.2 ± 0.6 μm (31.6–32.8) in total length, 21.5 ± 0.3 μm (21.2–21.8) in spore body length, 11.7 ± 0.5 μm (11.2–12.2) in width and 10.6 ± 0.9 μm (9.7–11.5) in thickness. Non-bifurcate caudal appendage, measuring 10.7 ± 0.4 μm (10.3–11.1) in length. Two polar capsules elongated aubergine in shape, equal in size and measuring 4.9 ± 0.2 μm (4.7–5.1) in length and 3.1 ± 0.5 μm (2.6–3.6) in width. Polar tubules coiled in 7–8 turns. This is the first report of a Henneguya species parasitizing a fish of the order Synbranchiformes from Amazon basin and the first to describe this parasite infecting a potamodromous fish from South America.

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首次报道一种组织生的Henneguya(刺胞纲，内孔虫纲)感染一种南美合鳃鱼的形态结构和生物学资料

在这项研究中，描述了一种粘孢子虫感染了亚马逊生物群系中生态、生物学和进化上重要的鱼类。粘孢子虫只在一种大理石纹沼泽鳗鱼的皮肤上被发现，这种鳗鱼是在秘鲁亚马逊洪泛平原的一条小溪中捕获的。成熟黏液孢子卵球形，全长32.2±0.6 μm(31.6 ~ 32.8)，孢子体长21.5±0.3 μm(21.2 ~ 21.8)，宽11.7±0.5 μm(11.2 ~ 12.2)，厚10.6±0.9 μm(9.7 ~ 11.5)。无分叉尾附，长度为10.7±0.4 μm(10.3-11.1)。两个极性胶囊呈茄子状，大小相等，长4.9±0.2 μm(4.7-5.1)，宽3.1±0.5 μm(2.6-3.6)。极性小管盘绕7-8圈。这是第一个关于一种寄生在亚马逊盆地合鳃目鱼类上的Henneguya物种的报告，也是第一个描述这种寄生虫感染一种来自南美洲的豆形鱼的报告。

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

Zoosystematics and Evolution ZOOLOGY-

CiteScore

3.50

自引率

5.00%

发文量

审稿时长

16 weeks

期刊介绍： Zoosystematics and Evolution, formerly Mitteilungen aus dem Museum für Naturkunde in Berlin, is an international, open access, peer-reviewed life science journal devoted to whole-organism biology. It publishes original research and review articles in the field of Metazoan taxonomy, biosystematics, evolution, morphology, development and biogeography at all taxonomic levels. The journal''s scope encompasses primary information from collection-related research, taxonomic descriptions and discoveries, revisions, annotated type catalogues, aspects of the history of science, and contributions on new methods and principles of systematics. Articles whose main topic is ecology, functional anatomy, physiology, or ethology are only acceptable when of systematic or evolutionary relevance and perspective.