(Table 1) Concentration of persistent organic pollutants in blood plasma of glaucous gulls (Larus hyperboreus) from Bjørnøya
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| Autores principales: | , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2010
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| _version_ | 1867171828292648960 |
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| author | Verboven, Nanette Verreault, Jonathan Letcher, Robert J Gabrielsen, Geir W Evans, Neil P |
| author_facet | Verboven, Nanette Verreault, Jonathan Letcher, Robert J Gabrielsen, Geir W Evans, Neil P |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Unpredictable changes in the environment stimulate the avian hypothalamo-pituitary-adrenal axis to produce corticosterone, which induces behavioural and metabolic changes that enhance survival in the face of adverse environmental conditions. In addition to profound environmental perturbations, such as severe weather conditions and unpredictable food shortages, many Arctic-breeding birds are also confronted with chronic exposure to persistent organic pollutants (POPs), some of which are known to disrupt endocrine processes. This study investigated the adrenocortical function of a top predator in the Arctic marine environment, the glaucous gull (Larus hyperboreus). High concentrations of organochlo-rines, brominated flame retardants and metabolically-derived products in blood plasma of incubating glaucous gulls were associated with high baseline corticosterone concentrations in both sexes and a reduced stress response in males. Contaminant-related changes in corticosterone concentration occurred over and above differences in body condition and seasonal variation. Chronically high corticosterone concentrations and/or a compromised adrenocortical response to stress can have negative effects on the health of an individual. The results of the present study suggest that exposure to POPs may increase the vulnerability of glaucous gulls to environmental stressors and thus could potentially compromise their ability to adapt to the rapidly changing environmental conditions associated with climate change that are currently seen in the Arctic. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_837541 |
| institution | PANGAEA |
| language | en |
| publishDate | 2010 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Concentration of persistent organic pollutants in blood plasma of glaucous gulls (Larus hyperboreus) from Bjørnøya Verboven, Nanette Verreault, Jonathan Letcher, Robert J Gabrielsen, Geir W Evans, Neil P Bear Island; Bjørnøya; Bjørnøya, Svalbard archipelago, Norway; Chlordane; Chlordane, standard deviation; Chlorinated benzene; Chlorinated benzene, standard deviation; Dichlorodiphenyltrichloroethane; Dichlorodiphenyltrichloroethane, standard deviation; Gas chromatography - Mass spectrometry (GC-MS); Hydroxylated polybrominated diphenyl ethers; Hydroxy-polychlorinated biphenyl; Hydroxy-polychlorinated biphenyl, standard deviation; International Polar Year (2007-2008); IPY; Methyl sulfone polychlorinated biphenyl; Methyl sulfone polychlorinated biphenyl, standard deviation; MULT; Multiple investigations; Polybrominated diphenyl ethers; Polybrominated diphenyl ethers, standard deviation; Polychlorinated biphenyl; Polychlorinated biphenyl, standard deviation; Sample amount; Sample type; Sex Unpredictable changes in the environment stimulate the avian hypothalamo-pituitary-adrenal axis to produce corticosterone, which induces behavioural and metabolic changes that enhance survival in the face of adverse environmental conditions. In addition to profound environmental perturbations, such as severe weather conditions and unpredictable food shortages, many Arctic-breeding birds are also confronted with chronic exposure to persistent organic pollutants (POPs), some of which are known to disrupt endocrine processes. This study investigated the adrenocortical function of a top predator in the Arctic marine environment, the glaucous gull (Larus hyperboreus). High concentrations of organochlo-rines, brominated flame retardants and metabolically-derived products in blood plasma of incubating glaucous gulls were associated with high baseline corticosterone concentrations in both sexes and a reduced stress response in males. Contaminant-related changes in corticosterone concentration occurred over and above differences in body condition and seasonal variation. Chronically high corticosterone concentrations and/or a compromised adrenocortical response to stress can have negative effects on the health of an individual. The results of the present study suggest that exposure to POPs may increase the vulnerability of glaucous gulls to environmental stressors and thus could potentially compromise their ability to adapt to the rapidly changing environmental conditions associated with climate change that are currently seen in the Arctic. |
| title | (Table 1) Concentration of persistent organic pollutants in blood plasma of glaucous gulls (Larus hyperboreus) from Bjørnøya |
| topic | Bear Island; Bjørnøya; Bjørnøya, Svalbard archipelago, Norway; Chlordane; Chlordane, standard deviation; Chlorinated benzene; Chlorinated benzene, standard deviation; Dichlorodiphenyltrichloroethane; Dichlorodiphenyltrichloroethane, standard deviation; Gas chromatography - Mass spectrometry (GC-MS); Hydroxylated polybrominated diphenyl ethers; Hydroxy-polychlorinated biphenyl; Hydroxy-polychlorinated biphenyl, standard deviation; International Polar Year (2007-2008); IPY; Methyl sulfone polychlorinated biphenyl; Methyl sulfone polychlorinated biphenyl, standard deviation; MULT; Multiple investigations; Polybrominated diphenyl ethers; Polybrominated diphenyl ethers, standard deviation; Polychlorinated biphenyl; Polychlorinated biphenyl, standard deviation; Sample amount; Sample type; Sex |
| url | https://doi.org/10.1594/PANGAEA.837541 |