TY  - STD
AU  - Tartu S, Angelier F.
PY  - 2015//
TI  - Polychlorinated biphenyl exposure and corticosterone levels in seven polar seabird species
BT  - Environmental Pollution
SP  - 173
EP  - 180
VL  - 197
KW  - Antarctic
KW  - Arctic
KW  - Birds
KW  - Glucocorticoids
KW  - PCBs
KW  - Stress
KW  -
N2  - The role of polychlorinated biphenyls (PCBs) on exposure-related endocrine effects has been poorly investigated in wild birds. This is the case for stress hormones including corticosterone (CORT). Some studies have suggested that environmental exposure to PCBs and altered CORT secretion might be associated. Here we investigated the relationships between blood PCB concentrations and circulating CORT levels in seven free-ranging polar seabird species occupying different trophic positions, and hence covering a wide range of PCB exposure. Blood ∑7PCB concentrations (range: 61–115,632 ng/g lw) were positively associated to baseline or stress-induced CORT levels in three species and negatively associated to stress-induced CORT levels in one species. Global analysis suggests that in males, baseline CORT levels generally increase with increasing blood ∑7PCB concentrations, whereas stress-induced CORT levels decrease when reaching high blood ∑7PCB concentrations. This study suggests that the nature of the PCB-CORT relationships may depend on the level of PCB exposure.
SN  - 0269-7491
L1  - https://intranet.ipev.fr/proposals/uploads/files/330/2016/2015_Tartu_PCBs_Cort_7_species_ENPO.pdf
UR  - http://dx.doi.org/10.1016/j.envpol.2014.12.007
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=6030), last updated on Tue, 30 Nov 1999 00:00:00 +0100
ID  - TartuS2015
ER  -