来自巴西马拉若岛的鲱形目（硬骨鱼纲）鱼类体内带有尾状附属物的粘孢子虫纲双壳目某种粘孢子虫的异常孢子形态。
Abnormal forms of sp. (Myxosporea: Bivalvulida) spores with caudal appendages in (Teleostei: Clupeiformes) from Marajó island, Brazil.
作者信息
Sindeaux-Neto José Ledamir, Amador Maylon Fernandes, Eduard Jhonata, Velasco Michele
机构信息
Morpho-molecular Integration and Technologies Laboratory (LIMT), Federal Rural University of the Amazon (UFRA), Avenida Presidente Tancredo Neves, N◦ 2501 Bairro, Montese, Cidade, Belém, Pará CEP: 66.077-901 Brazil.
Postgraduate Program in Biology of Infectious and Parasitic Agents (BAIP), Federal University of Pará, Belém, Pará Brazil.
出版信息
J Parasit Dis. 2025 Jun;49(2):447-452. doi: 10.1007/s12639-024-01773-0. Epub 2024 Dec 26.
is one of the most speciose genera of myxozoans, most species are found infecting freshwater fish. Although the absence of caudal appendages is one of the main taxonomic criteria to differentiate this genus from other species, in some cases anomalous forms of are observed, with the presence of caudal appendages. The Brazilian Amazon contains a diverse fish population, which includes a large number of species, some of which are pathogenic. (Valenciennes, 1847) is a species with huge migratory flows that contributes for the population's diet food. This study reports the observation of , including aberrant forms, on the gills of , a freshwater fish. Gill arch cysts with myxospores were found in 90% of the specimens analyzed, with 5% having elongated caudal appendages ranging in size from 4 to 16 µm. This is the first report of Abnormal forms in Clupeiformes, adding to our understanding of the genus phenotypic plasticity in South American fish.
是粘孢子虫中种类最为繁多的属之一，大多数物种感染淡水鱼。虽然没有尾附属物是将该属与其他物种区分开来的主要分类标准之一，但在某些情况下，会观察到异常形态的 ，存在尾附属物。巴西亚马逊地区鱼类种群多样，其中包括大量的 物种，有些具有致病性。 （瓦朗谢讷，1847年）是一种具有巨大洄游量的物种，为当地居民提供食物。本研究报告了在淡水鱼 的鳃上观察到 ，包括异常形态。在90%的分析标本中发现了带有粘孢子的鳃弓囊肿，5%的标本具有长度在4至16微米之间的细长尾附属物。这是鲱形目中 异常形态的首次报告，增进了我们对南美鱼类中该属表型可塑性的理解。
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