Biomarkers of oxidative stress and bioaccumulation of trace metals in waterbirds from different rice fields systems

Author:

Bergmann Fabiane Borba,Leitemperger Jossiele Wesz,Jorge Marianna Basso,da Cunha Amaral Hugo Leonardo,Bianchini Adalto,Loro Vania Lucio,Guadagnin Demetrio Luis

Abstract

AbstractWe compared trace metal concentrations (Pb, Zn, Cd, Cu) in feathers and biomarkers in muscle and liver tissue of waterbirds from organic and conventional irrigated rice farms in South Brazil. Cu and Pb concentrations were higher in waterbirds from conventional farms, whereas Cd and Zn levels were elevated in organic farms. Birds foraging in organic farms exhibited lower CAT and SOD activity and higher NPSH, LPO, and PC concentrations compared to those in conventional farms. Higher Cu and Pb concentrations were associated with elevated SOD and CAT activity, more prevalent in birds frequenting conventional farms. Conversely, birds with higher Cd and Zn concentrations showed increased NPSH, LPO, and PC levels and were more common in organic farms. Our study underscores complex differences in trace metal accumulation and oxidative stress biomarkers among waterbirds in organic and conventional rice crops.

Funder

Conselho Nacional de Desenvolvimento Científico e Tecnológico,Brazil

Publisher

Springer Science and Business Media LLC

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