The present study aimed to evaluate the biometric and hematological indices in Mugil curema collected in two Neotropical estuaries in the south coast of Brazil, and to investigate if such variables can be influenced by seasonality and degree of anthropogenic influence. Differences between seasons and estuarine systems were observed, where the dissolved oxygen and salinity, together with the historical contamination of the Santos estuarine system (SES), seem to play an important role in the biological response. Fish from the SES presented, in general, high responses of the hematological variables (red and white series) and the hepatosomatic index, relative to those fish from Peruíbe estuarine system (PES), even with the remote contamination present at PES, while no erythrocytic abnormalities or micronucleus were observed in fish collected at SES and PES in both seasons. The present work demonstrated that M. curema collected at SES are experiencing hematological and metabolic perturbations that are not observed in fish collected at PES.

本研究旨在评估穆吉尔治愈的生物学和血液学指标收集了巴西南海岸的两个新热带河口，并调查这些变量是否会受到季节和人为影响的影响。观察到季节和河口系统之间的差异，其中溶解氧和盐度以及桑托斯河口系统（SES）的历史污染似乎在生物反应中起重要作用。相对于来自秘鲁河口系统（PES）的鱼，SES的鱼对血液学变量（红色和白色系列）和肝体指数的反应通常较高，即使存在PES的污染较轻但没有红细胞生成在两个季节在SES和PES收集的鱼中均观察到异常或微核。目前的工作表明在SES收集的克氏梭菌正经历血液和代谢扰动，而在PES收集的鱼中却未观察到。