Chlorpyrifos and persistent organic pollutants in feathers of the near threatened Olrog's Gull in southeastern Buenos Aires Province, Argentina.

Autor: Quadri-Adrogué A; Laboratorio de Ecotoxicología y Contaminación Ambiental, Universidad Nacional de Mar del Plata, Funes, 3350, Mar del Plata (7600), Argentina; Laboratorio de Vertebrados, Universidad Nacional de Mar del Plata, Funes, 3350, Mar del Plata (7600), Argentina., Seco Pon JP; Laboratorio de Vertebrados, Universidad Nacional de Mar del Plata, Funes, 3350, Mar del Plata (7600), Argentina; Instituto de Investigaciones Marinas y Costeras (IIMyC) (UNMDP-CONICET), Argentina. Electronic address: secopon@mdp.edu.ar., García GO; Laboratorio de Vertebrados, Universidad Nacional de Mar del Plata, Funes, 3350, Mar del Plata (7600), Argentina; Instituto de Investigaciones Marinas y Costeras (IIMyC) (UNMDP-CONICET), Argentina., Castano MV; Laboratorio de Vertebrados, Universidad Nacional de Mar del Plata, Funes, 3350, Mar del Plata (7600), Argentina; Instituto de Investigaciones Marinas y Costeras (IIMyC) (UNMDP-CONICET), Argentina., Copello S; Laboratorio de Vertebrados, Universidad Nacional de Mar del Plata, Funes, 3350, Mar del Plata (7600), Argentina; Instituto de Investigaciones Marinas y Costeras (IIMyC) (UNMDP-CONICET), Argentina., Favero M; Laboratorio de Vertebrados, Universidad Nacional de Mar del Plata, Funes, 3350, Mar del Plata (7600), Argentina; Instituto de Investigaciones Marinas y Costeras (IIMyC) (UNMDP-CONICET), Argentina., Beatriz Miglioranza KS; Laboratorio de Ecotoxicología y Contaminación Ambiental, Universidad Nacional de Mar del Plata, Funes, 3350, Mar del Plata (7600), Argentina; Instituto de Investigaciones Marinas y Costeras (IIMyC) (UNMDP-CONICET), Argentina.
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2021 Mar 01; Vol. 272, pp. 115918. Date of Electronic Publication: 2020 Oct 23.
DOI: 10.1016/j.envpol.2020.115918
Abstrakt: The use of bird feathers to assess environmental contamination has steadily increased in ecotoxicological monitoring programs over the past decade. The Olrog's Gull (Larus atlanticus) is a species endemic to the Atlantic coast of southern South America, constituting one of the three threatened gull species listed in the entire American continent. The aim of this study was to assess the exposure to Persistent Organic Pollutants (POPs) and chlorpyrifos in the Near Threatened Olrog's Gull through the analysis of body feathers sampled at the Mar Chiquita coastal lagoon, the main wintering area of the species in Argentina, controlling for sex and age class. Chlorpyrifos showed the highest concentrations among all contaminants and groups of individuals (X¯ = 263 ng g -1 ), while among POPs the concentration of organochlorine pesticides was higher than polychlorinated biphenyls and polybrominated diphenyl ethers, likely indicating the current use of these agricultural contaminant in the region. The highest values of total POP concentrations (males X¯ = 280 ng g -1 , females X¯ = 301 ng g -1 ) were found in juvenile gulls, likely as a consequence of the incorporation of pollutants during the breeding season. Subadult and adult birds showed difference between sexes in the concentration of contaminants, with higher levels in males than females. The results highlight the need to include birds of different sex and age classes in order to better understand the variation in pollutants loads. The present study provides relevant information to improve the conservation status of the Olrog's Gull and new insights about the environmental health of the Mar Chiquita coastal lagoon, Argentina, a MAB-UNESCO World Biosphere Reserve. However, there is a continued need for long-term monitoring programs focusing on this threatened species to understand the effects of pollutants on its population.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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