INSTITUTO DE DIVERSIDAD Y ECOLOGIA ANIMAL
Unidad Ejecutora - UE
Multi-biomarker responses in fish (Jenynsia multidentata) to assess the impact of pollution in rivers with mixtures of environmental contaminants
MORILLO, DANIEL; DRA. BISTONI, MARÍA DE LOS ÁNGELES ; RIVETTI, NATALIA; DRA. AMÉ, M.V; DRA. BALLESTEROS, MARÍA LAURA; DRA. BERTRAND, LIDWINA
SCIENCE OF THE TOTAL ENVIRONMENT
ELSEVIER SCIENCE BV
Lugar: Amsterdam; Año: 2017 vol. 595 p. 711 - 711
Aquatic 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 gill and total indexes) being more sensitiveduring the wet season and the biochemical and behavioral (increasedcatalase in liver, increased AChE and BChE in muscle, time spent in thelateral section of the tank) during the dry season. Multivariate analysisdemonstrated our hypothesis that contamination of the Ctalamochita Riveroccurs in sites impacted by anthropic activity.