The Spanish mackerel Scomberomorus brasiliensis is an epipelagic species with coastal habits and is a fundamental part of artisanal fishing along the Brazilian coast as a species with high economic value. The present work aimed to report the first occurrence of Cybicola buccatus (Copepoda) in S. brasiliensis in northeastern Brazil. The fish were purchased at the public terminal in Aracaju/SE between March 2016 and June 2019 and transported to the laboratory for identification, necropsy and parasite collection. Of the sixteen fish analysed, six were parasitized by C. buccatus with a prevalence of 37.50%, an mean intensity of 1.33 and an mean abundance of 0.50. This occurrence is a new record of this ectoparasite for the locality, as it had not yet been reported in S. brasiliensis on the northeastern coast of Brazil. The results presented here contribute to the existing knowledge about the distribution of this copepod and the parasitic fish fauna along the Brazilian coast.

巴西鲭鱼Scomberomorus brasiliensis是具有沿海习性的近岸鱼类，是巴西沿海具有高经济价值的物种的手工捕鱼的基本组成部分。本工作旨在报告在巴西东北部的巴西利亚沙门氏菌中首次出现的Cybicola buccatus（Copepoda）。这些鱼是在2016年3月至2019年6月期间在东南阿拉卡茹的公共码头购买的，并被运往实验室进行鉴定，尸检和寄生虫收集。在分析的16条鱼中，有6条被布氏梭菌寄生。患病率为37.50％，平均强度为1.33，平均丰度为0.50。该事件是该外寄生虫在该地区的新记录，因为尚未在巴西东北海岸的巴西利亚链球菌中报道。此处介绍的结果有助于人们了解这种co足类动物和巴西沿海寄生鱼的分布。