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This research aims to assess the toxicity of urbanized and rural river waters on the neotropical fish Hypostomus ancistroides, focusing on genotoxic and biochemical effects.

April 24, 2026Environmental Toxicology and Chemistry

Multibiomarker approach in a Neotropical fish to evaluate an urbanized river

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This research aims to assess the toxicity of urbanized and rural river waters on the neotropical fish Hypostomus ancistroides, focusing on genotoxic and biochemical effects.
Fish were collected from urban and rural points along the Toledo River and a rural river site.
Genotoxic effects were measured through the frequency of micronuclei and erythrocyte nuclear abnormalities.
Biochemical biomarkers such as superoxide dismutase, catalase, glutathione S-transferase, and lipid peroxidation were evaluated across two seasons.
Micronuclei and erythrocyte nuclear abnormalities were present in samples from both urban and rural areas, with higher occurrences in urban-influenced areas during winter.
An increase in superoxide dismutase was noted in summer at urban point P2, while no significant change in catalase was observed.
Lipid peroxidation levels were higher during winter in rural and urban-influenced sites compared to summer.

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Evaluates genotoxic and biochemical effects in a neotropical fish, highlighting contamination risk in urbanized rivers.

Cite This Study

Machado et al. (2026) studied this question.

synapsesocial.com/papers/69eb0a94553a5433e34b4a1e https://doi.org/10.1093/etojnl/vgag102

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Multibiomarker approach in a Neotropical fish to evaluate an urbanized river

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Implication

Cite This Study

Multibiomarker approach in a Neotropical fish to evaluate an urbanized river

Key Points

Discussion

Implication

Cite This Study

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