Pollutant accumulation patterns in nestlings of an avian top predator: biochemical and metabolic effects

The Science of the Total Environment
Manuel E Ortiz-SantaliestraRafael Mateo

Abstract

The exposure to persistent pollutants such as organochlorine compounds (OCs) or metals has been associated with declines in top predator populations, which can accumulate high amounts of these pollutants from their prey. However, understanding how variation in OC and metal accumulation in wild species affects their biochemical and physiological responses is a big challenge, especially for endangered predators like the Bonelli's eagle (Aquila fasciata). This bird of prey is an interesting study model because the differences in diet composition among populations and territories can account for important pollutant uptake variations. We compared OC and metal accumulation in blood of Bonelli's eagle nestlings from three populations across Spain as a function of origin, age class (nestlings vs. adults), sex and number of siblings per nest, and related accumulation patterns to responses indicative of body condition, biochemistry and antioxidant status. Nestlings from Catalonia, the most industrialized area, showed the highest concentrations of PCBs and arsenic, and the lowest concentrations of zinc. The two former substances, together with DDTs, exerted an overall influence on nestling's physiology. PCBs and arsenic were associated wi...Continue Reading

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Citations

Sep 2, 2016·Environmental Toxicology and Chemistry·Phyllis C FuchsmanVictor S Magar
Jun 20, 2017·The Science of the Total Environment·Marie-Sophie García-HerasFrancois Mougeot
Nov 6, 2020·Ecotoxicology·Silvia Espín, Pablo Sánchez-Virosta
Oct 13, 2018·The Science of the Total Environment·Helena Tauler-AmetlllerJoan Real
Jun 23, 2018·The Science of the Total Environment·Silvia EspínFrançois Mougeot

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