The Carpathian brook lamprey (Eudontomyzon danfordi Regan, 1911) is an endemic protected species of Cephalaspidomorphi in the Carpathian Basin. No parasites have become known from these jawless vertebrates to date. Here, the authors describe an infection from a single specimen manifesting in protuberant skin cysts 7–10 mm in diameter, scattered on the body surface. Similar dermal infection was observed in 25 of the 274 lampreys recorded in the population survey. Skin cysts filled with round spore‐like structures of a dermocystid parasite were found. These particles measured 8–14 µm in diameter and had an about 0.5 µm thick wall, and containing mainly a granular mass and a relatively scarce plasma. No hyphae were recorded. Despite conspicuous morphological changes in the skin, no inflammatory reactions were found. The molecular analysis of 18S rDNA showed similarity to dermocystid species of several fish species but differed from them approximately by 2%. This is the first record of a dermocystid parasite infecting a jawless vertebrate.

中文翻译：

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匈牙利蒂萨河盆地的喀尔巴阡溪七lamp鳗（Eudontomyzon danfordi Regan，1911）感染了一种囊状寄生虫。

喀尔巴阡溪南lamp（Eudontomyzon danfordiRegan，1911年）是喀尔巴阡盆地特有的头孢烯基吗啡保护物种。迄今为止，从这些无颌脊椎动物中还没有发现寄生虫。在这里，作者描述了一种感染，该感染存在于直径7-10 mm的隆起皮肤囊肿中，并散布在体表上。在人口调查中记录的274个油烟中，有25个观察到了类似的皮肤感染。发现皮肤囊肿中充满了圆形的囊状寄生虫的孢子状结构。这些颗粒的直径为8–14 µm，壁厚约0.5 µm，主要包含颗粒状物质和相对稀缺的等离子体。没有记录菌丝。尽管皮肤有明显的形态变化，但未发现炎症反应。18S rDNA的分子分析显示与几种鱼类的皮囊菌相似，但相差约2％。这是皮囊状寄生虫感染无颚脊椎动物的第一个记录。