Usefulness of oxidative stress biomarkers in native species for the biomonitoring of pesticide pollution in a shallow lake of the Austral Pampas, Argentina

• Autores: Lombardero, Lucas Rodrigo; Pérez, Débora Jesabel; Medici, Sandra Karina; Mendieta, Julieta Renée; Iturburu, Fernando Gastón; Menone, Mirta Luján
• Año de publicación: 2024
• Idioma: inglés
• Tipo de recurso: artículo
• Fuente: Chemosphere 353 : 141578 (April 2024)
• Materia: Organismos Nativos; Organismos Indicadores; Estrés Oxidativo; Plaguicidas; Polución; Native Organisms; Biota; Indicator Organisms; Oxidative Stress; Pesticides; Pollution; Agua poco Profunda
• Institución: Instituto Nacional de Tecnología Agropecuaria

Pesticide contamination and its adverse effects on native freshwater species continue to be a worldwide major concern, mainly in developing countries. Passive biomonitoring of pesticide pollution in shallow lakes may be achieved by the simultaneous use of fish and wetland plants. Thus, the present study aimed to evaluate the occurrence of current-use pesticides in the surface water of a shallow lake of the Austral Pampas region (Buenos Aires Province, Argentina) surrounded by intensive agricultural activities and its relationship with a battery of biomarkers, including oxidative stress and genotoxicity, in two native species, the fish Oligosarcus jenynsii and the macrophyte Bidens laevis. A total of 26 pesticide residues were analyzed, and the main ones detected were glyphosate and its metabolite aminomethylphosphonic acid (AMPA), chlorpyrifos, and imidacloprid. In O. jenynsii, hydrogen peroxide (H2O2) content in the liver increased with chlorpyrifos occurrence, while malondialdehyde (MDA) levels in the brain and liver increased with the presence of both chlorpyrifos and glyphosate. In B. laevis, H2O2 and MDA levels in leaves and roots increased with AMPA occurrence. Also, leaf H2O2 contents and root MDA levels increased with chlorpyrifos concentration. In contrast, catalase and peroxidase activities in roots decreased with AMPA and chlorpyrifos occurrence. In both species, mainly H2O2 and MDA levels demonstrated their sensitivity to be used as biomarkers in the biomonitoring of current-use pesticide pollution in shallow lakes. Their use may provide information to plan strategies for environmental conservation by government institutions or decision-makers, and to assess the biota health status.
EEA Balcarce
Fil: Lombardero, Lucas Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata; Argentina. Instituto de Investigaciones Marinas y Costeras; Argentina.
Fil: Pérez, Débora Jesabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina.
Fil: Medici, Sandra Karina. Fares Taie Instituto de Análisis Magallanes; Argentina.
Fil: Mendieta, Julieta Renée. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto de Investigaciones Biológicas; Argentina. Comisión de Investigaciones Científica; Argentina.
Fil: Iturburu, Fernando Gastón. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata; Argentina. Instituto de Investigaciones Marinas y Costeras; Argentina.
Fil: Menone, Mirta Luján. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata; Argentina. Instituto de Investigaciones Marinas y Costeras; Argentina.