Brazilian sardine is emerging as a promising species in Aquaculture. This study describes for the first time a case of parasitic infestation by Amyloodinium in Brazilian sardines Sardinella brasiliensis obtained from natural spawning in captivity. The sardines kept in nurseries were naturally parasitized by the amylodiniosis causative agente the dynoflagellate A. ocellatum with high mortalities above 50%. Fish presented clinical signs characteristic of amyloodiniosis which included easily perceived behavioral changes such as loss of appetite, scraping of the body against objects, walls and bottom, nursery pipes, agglomerations near the aerators and water inlets, presented with accelerated opercular beating and erratic swimming. For therapeutic treatment copper sulfate was used for 10 days. At the end of the treatment period the fish had no clinical signs or presence of the parasite on the body surface, indicating that the application of copper sulfate in concentration of 0.2 mg L⁻¹ of Cu⁺ was effective to control this parasite, apparently without causing damage to Brazilian sardine.

巴西沙丁鱼正在成为水产养殖中的有前途的物种。这项研究首次描述了从人工饲养产卵的巴西沙丁鱼沙丁鱼Sardinella brasiliensis中，Amyloodinium引起寄生虫侵扰的案例。藏在苗圃中的沙丁鱼自然被寄生虫致病的鞭毛鞭毛虫A. ocellatum寄生。死亡率高于50％的人。鱼表现出淀粉样肌病的特征性临床体征，包括容易察觉的行为变化，例如食欲不振，身体被物体刮伤，刮伤墙壁，底部，育苗管，曝气器和进水口附近的团块，并表现出操作性跳动加快和游泳不规律。为了治疗，硫酸铜使用了10天。在治疗期结束时，鱼在体表上没有临床症状或寄生虫的存在，表明以0.2 mg L ^-1的Cu ⁺浓度施用硫酸铜可有效控制这种寄生虫，显然没有对巴西沙丁鱼造成损害