HISTOPATHOLOGY ANALYSIS OF Sciades herzbergii (PISCES, ARIIDAE) AND Bagre bagre (PISCES, ARIIDAE) GILLS TO ASSESS ENVIRONMENTAL POLLUTION

Gill and hepatic histological alterations in Sciades herzbergii resulting from trace element contamination in the Port of São Luiz, Brazil

“…Similar lesions were also registered by other studies for this same species in two areas in the region of the Complexo Estuarino de São Marcos -MA (Castro et al, 2018;Viana et al, 2021) and in gills of Oreochromis niloticus (Linnaeus, 1758) from the Laguna da Jansen (area with a history of contamination by domestic effluents), São Luís, Brazil (Pereira et al, 2014). Freitas et al (2022) found other types of branchial lesions (hyperplasia, lamellar disorganization, proliferation of mucous cells and dilation of venous sinuses and congestion) in Hoplias malabaricus in two stretches of the Mearim River in the Baixada Maranhense region.…”

“…Severe liver changes (steatosis, necrosis, and infiltration) and moderate to severe gill alterations were found by Santos et al (2023) when examining the species C. undecimalis and G. stomatus in an estuarine region with a history of mercury pollution and residues from the sugarcane industry. Viana et al (2021) reported mild, moderate, and severe changes in gills and livers of S. herzbergii and Bagre bagre from the Santo Antonio River basin and the estuarine complex of Curupu Bay, Maranhão.…”

“…Biomonitoring, recognized worldwide, uses organisms to assess the quality of aquatic environments and serves as a bioindicator of environmental pollution (Okay et al, 2016). Among the fishing resources found on the coast of Maranhão, Sciades herzbergii (Bloch, 1794), an estuarine catfish, has great commercial relevance in artisanal fishing in the state and has been successfully used in biomarker studies (Carvalho Neta et al, 2017;Soares et al, 2020;Viana et al, 2021).…”

Biomarcadores Morfológicos Em Fígados E Brânquias De Sciades Herzbergii (Bloch, 1794), Para Avaliação De Impacto Ambiental Na Baía De São Marcos, Brasil

“…Quando a fisiologia deste órgão é afetada, há um impacto na saúde do peixe (Gjessing et al, 2019). Lesões semelhantes também foram registradas por outros estudos para esta mesma espécie em duas áreas da região do Complexo Estuarino de São Marcos -MA (Castro et al, 2018;Viana et al, 2021) e em brânquias de Oreochromis niloticus (Linnaeus, 1758) da Laguna da Jansen (área com histórico de contaminação por efluentes domésticos), São Luís, Brasil (Pereira et al, 2014).…”