Steckert Lilian D, Cardoso Lucas, Tancredo Karen R, Martins Maurício L, Jerônimo Gabriela T
AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, Federal University of Santa Catarina (UFSC), Rodovia Admar Gonzaga, 1346, Itacorubi, 88040-900 Florianópolis, SC, Brazil.
An Acad Bras Cienc. 2019 Sep 23;91(3):e20180959. doi: 10.1590/0001-3765201920180959. eCollection 2019.
The genus Dermocystidium is very comprehensive in the host and site of infection, however this is the first report of the occurrence of Dermocystidium sp. in the gills of Nile tilapia. This study was carried out in a fish farming located in the state of Santa Catarina, Brazil. No mortalities were reported in the facility studied and the animals were clinically healthy. During the histopathological analysis of the gills, 8.33% of the fish presented spores of Dermocystidium sp. in the gill tissue. The spores reported herein had a mean length and width of 6.206 x 5.233 μm and a refractile body diameter of 1.965 μm and were studied by histopathology and Transmission Electron Microscopy. This study highlights the importance of a new branchial pathogen in farmed tilapia, as well as to its pathogenic potential, considering the outbreaks of mortalities associated with other fish species.
皮囊肿菌属在感染宿主和感染部位方面非常广泛，然而这是尼罗罗非鱼鳃中出现皮囊肿菌属的首次报道。本研究在巴西圣卡塔琳娜州的一个养鱼场进行。在所研究的养殖场中未报告有死亡情况，且动物临床健康。在鳃的组织病理学分析中，8.33%的鱼在鳃组织中出现了皮囊肿菌属的孢子。本文报道的孢子平均长度和宽度为6.206×5.233μm，折光体直径为1.965μm，并通过组织病理学和透射电子显微镜进行了研究。考虑到与其他鱼类物种相关的死亡暴发情况，本研究突出了一种新的养殖罗非鱼鳃部病原体的重要性及其致病潜力。
