Multi-biomarker responses in fish (Jenynsia multidentata) to assess the impact of pollution in rivers with mixtures of environmental contaminants

DRA. BALLESTEROS, MARÍA LAURA; RIVETTI, NATALIA; MORILLO, DANIEL; DRA. BERTRAND, LIDWINA ; DRA. AMÉ, M.V; DRA. BISTONI, MARÍA DE LOS ÁNGELES

SCIENCE OF THE TOTAL ENVIRONMENT

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2017 vol. 595 p. 711 - 711

0048-9697

quatic biotas frequently inhabit a multi-stressor environmentthat affects their structure and function. The hypothesis of this work isthat differential responses at different levels of organization will befound in J. multidentata exposed to the multi-stressor context of theCtalamochita River (Córdoba, Argentina), and that those responses will bemore pronounced in sites impacted by anthropic activity (cultivated andindustrial areas, city settlements). The study was carried out at foursites along the Ctalamochita River, during the wet and the dry seasons. Aseven-day active sampling used caged fish. After exposure, biomarkerlevels were measured at individual (somatic indexes, behavioralparameters), histological (semi-quantitative indexes in gills and liver)and biochemical (oxidative stress, Acetyl- and butyrylcholinesteraseenzymes) levels. The biomarkers had an individually differential responsedepending on the hydrological seasons, the histological biomarkers(increased histopathological