Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels
Understanding the drivers and effects of exposure to contaminants such as mercury (Hg) and organochlorine compounds (OCs) in Antarctic wildlife is still limited. Yet, Hg and OCs have known physiological and fitness effects in animals, with consequences on their populations. Here we measured total Hg...
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Online Access: | https://hdl.handle.net/11250/2722927 https://doi.org/10.1016/j.envres.2020.110518 |
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ftnilu:oai:nilu.brage.unit.no:11250/2722927 2023-07-30T03:58:00+02:00 Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels Carravieri, Alice Warner, Nicholas Alexander Herzke, Dorte Brault-Favrou, Maud Tarroux, Arnaud Fort, Jérôme Bustamante, Paco Descamps, Sebastien 2020 application/pdf https://hdl.handle.net/11250/2722927 https://doi.org/10.1016/j.envres.2020.110518 eng eng Environmental Research. 2020, 193, 110518. urn:issn:0013-9351 https://hdl.handle.net/11250/2722927 https://doi.org/10.1016/j.envres.2020.110518 cristin:1870593 Navngivelse-Ikkekommersiell 4.0 Internasjonal http://creativecommons.org/licenses/by-nc/4.0/deed.no © 2020 The Authors. Published by Elsevier Inc. 193 Environmental Research 110518 Peer reviewed Journal article 2020 ftnilu https://doi.org/10.1016/j.envres.2020.110518 2023-07-08T19:54:00Z Understanding the drivers and effects of exposure to contaminants such as mercury (Hg) and organochlorine compounds (OCs) in Antarctic wildlife is still limited. Yet, Hg and OCs have known physiological and fitness effects in animals, with consequences on their populations. Here we measured total Hg (a proxy of methyl-Hg) in blood cells and feathers, and 12 OCs (seven polychlorinated biphenyls, PCBs, and five organochlorine pesticides, OCPs) in plasma of 30 breeding female Antarctic petrels Thalassoica antarctica from one of the largest colonies in Antarctica (Svarthamaren, Dronning Maud Land). This colony is declining and there is poor documentation on the potential role played by contaminants on individual physiology and fitness. Carbon (δ13C) and nitrogen (δ15N) stable isotope values measured in the females' blood cells and feathers served as proxies of their feeding ecology during the pre-laying (austral spring) and moulting (winter) periods, respectively. We document feather Hg concentrations (mean ± SD, 2.41 ± 0.83 μg g−1 dry weight, dw) for the first time in this species. Blood cell Hg concentrations (1.38 ± 0.43 μg g−1 dw) were almost twice as high as those reported in a recent study, and increased with pre-laying trophic position (blood cell δ15N). Moulting trophic ecology did not predict blood Hg concentrations. PCB concentrations were very low (Σ7PCBs, 0.35 ± 0.31 ng g−1 wet weight, ww). Among OCPs, HCB (1.02 ± 0.36 ng g−1 ww) and p, p’-DDE (1.02 ± 1.49 ng g−1 ww) residues were comparable to those of ecologically-similar polar seabirds, while Mirex residues (0.72 ± 0.35 ng g−1 ww) were higher. PCB and OCP concentrations showed no clear relationship with pre-laying or moulting feeding ecology, indicating that other factors overcome dietary drivers. OC residues were inversely related to body condition, suggesting stronger release of OCs into the circulation of egg-laying females upon depletion of their lipid reserves. Egg volume, hatching success, chick body condition and survival were not related to ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land Thalassoica antarctica NILU – Norwegian Institute for Air Research: NILU Brage Antarctic Austral Dronning Maud Land Svarthamaren ENVELOPE(3.423,3.423,-54.438,-54.438) Environmental Research 193 110518 |
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Open Polar |
collection |
NILU – Norwegian Institute for Air Research: NILU Brage |
op_collection_id |
ftnilu |
language |
English |
description |
Understanding the drivers and effects of exposure to contaminants such as mercury (Hg) and organochlorine compounds (OCs) in Antarctic wildlife is still limited. Yet, Hg and OCs have known physiological and fitness effects in animals, with consequences on their populations. Here we measured total Hg (a proxy of methyl-Hg) in blood cells and feathers, and 12 OCs (seven polychlorinated biphenyls, PCBs, and five organochlorine pesticides, OCPs) in plasma of 30 breeding female Antarctic petrels Thalassoica antarctica from one of the largest colonies in Antarctica (Svarthamaren, Dronning Maud Land). This colony is declining and there is poor documentation on the potential role played by contaminants on individual physiology and fitness. Carbon (δ13C) and nitrogen (δ15N) stable isotope values measured in the females' blood cells and feathers served as proxies of their feeding ecology during the pre-laying (austral spring) and moulting (winter) periods, respectively. We document feather Hg concentrations (mean ± SD, 2.41 ± 0.83 μg g−1 dry weight, dw) for the first time in this species. Blood cell Hg concentrations (1.38 ± 0.43 μg g−1 dw) were almost twice as high as those reported in a recent study, and increased with pre-laying trophic position (blood cell δ15N). Moulting trophic ecology did not predict blood Hg concentrations. PCB concentrations were very low (Σ7PCBs, 0.35 ± 0.31 ng g−1 wet weight, ww). Among OCPs, HCB (1.02 ± 0.36 ng g−1 ww) and p, p’-DDE (1.02 ± 1.49 ng g−1 ww) residues were comparable to those of ecologically-similar polar seabirds, while Mirex residues (0.72 ± 0.35 ng g−1 ww) were higher. PCB and OCP concentrations showed no clear relationship with pre-laying or moulting feeding ecology, indicating that other factors overcome dietary drivers. OC residues were inversely related to body condition, suggesting stronger release of OCs into the circulation of egg-laying females upon depletion of their lipid reserves. Egg volume, hatching success, chick body condition and survival were not related to ... |
format |
Article in Journal/Newspaper |
author |
Carravieri, Alice Warner, Nicholas Alexander Herzke, Dorte Brault-Favrou, Maud Tarroux, Arnaud Fort, Jérôme Bustamante, Paco Descamps, Sebastien |
spellingShingle |
Carravieri, Alice Warner, Nicholas Alexander Herzke, Dorte Brault-Favrou, Maud Tarroux, Arnaud Fort, Jérôme Bustamante, Paco Descamps, Sebastien Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels |
author_facet |
Carravieri, Alice Warner, Nicholas Alexander Herzke, Dorte Brault-Favrou, Maud Tarroux, Arnaud Fort, Jérôme Bustamante, Paco Descamps, Sebastien |
author_sort |
Carravieri, Alice |
title |
Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels |
title_short |
Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels |
title_full |
Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels |
title_fullStr |
Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels |
title_full_unstemmed |
Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels |
title_sort |
trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying antarctic petrels |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2722927 https://doi.org/10.1016/j.envres.2020.110518 |
long_lat |
ENVELOPE(3.423,3.423,-54.438,-54.438) |
geographic |
Antarctic Austral Dronning Maud Land Svarthamaren |
geographic_facet |
Antarctic Austral Dronning Maud Land Svarthamaren |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land Thalassoica antarctica |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land Thalassoica antarctica |
op_source |
193 Environmental Research 110518 |
op_relation |
Environmental Research. 2020, 193, 110518. urn:issn:0013-9351 https://hdl.handle.net/11250/2722927 https://doi.org/10.1016/j.envres.2020.110518 cristin:1870593 |
op_rights |
Navngivelse-Ikkekommersiell 4.0 Internasjonal http://creativecommons.org/licenses/by-nc/4.0/deed.no © 2020 The Authors. Published by Elsevier Inc. |
op_doi |
https://doi.org/10.1016/j.envres.2020.110518 |
container_title |
Environmental Research |
container_volume |
193 |
container_start_page |
110518 |
_version_ |
1772820725293383680 |