Datos Ambientales y Enzimáticos - Camarones - Del Chupino: Monje

Registro completo

Título

Datos Ambientales y Enzimáticos - Camarones - Del Chupino: Monje

Autor(es)

Negro, Carlos Leandro; Viozzi, María Florencia; Williner, Verónica

Afiliación(es) del/de los autor(es)

Negro, Carlos Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Viozzi, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Williner, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina

Resumen

The Pampean region is characterized by a flat land area with gentle slopes and extensive agricultural land use. Streams and rivers associated with agricultural catchments are usually affected by pesticides that are used on crops and drift into aquatic environments. These streams may exhibit different characteristics, as they flow into larger rivers, particularly regarding pesticide concentrations. Ten different sites along lowland stream were studied, from the headwaters to the mouth near the Middle Paraná River. Physicochemical parameters and pesticide concentrations in the water were measured. Additionally, Macrobrachium borellii shrimp were exposed for seven days at each site in a field cage design. After exposure, enzymatic and non-enzymatic parameters related to oxidative stress were measured in the hepatopancreas and the muscle. A control group was caged and maintained in containers used during the acclimation period. At several headwater sites, environmental conditions, including pesticide concentrations, were sufficiently stressful to cause 100% mortality for individuals. Among surviving shrimp, oxidative stress was mainly observed in the headwaters (first-order streams). Overall, positive correlations were observed between the pesticide concentrations and biomarkers, although some biomarkers showed negatively correlations. According to MANOVA, atrazine concentrations better explained Catalase and Superoxide Dismutase activities in the muscle. The integrative biomarker response showed a general increase in biomarker responses, with a 1st order stream being the most stressful site. The headwaters were the most affected and stressful aquatic environments and should be those where more conservation efforts should be made.

Año de publicación

2025

Idioma

español

Formato (Tipo MIME)

application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Clasificación temática de acuerdo a la FORD

Ciencias de la tierra y ciencias ambientales relacionadas

Condiciones de uso

Acceso restringido por un tiempo determinado. Estará disponible en: bajo licencia Creative Commons https://creativecommons.org/licenses/by-nc-sa/2.5/ar/

Repositorio digital

CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas

Identificador de proyecto

Ministerio de Ciencia, Tecnología e Innovación Productiva. Agencia Nacional de Promoción Científica y Tecnológica. Fondo para la Investigación Científica y Tecnológica/2022 - 0240

Identificador de proyecto

Consejo Nacional de Investigaciones Científicas y Técnicas/2022 - 0240

Identificador de proyecto

Universidad Nacional del Litoral/2022 - 0240