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/10037/21176 https://doi.org/10.1016/j.envres.2020.110518 |
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ftunivtroemsoe:oai:munin.uit.no:10037/21176 2023-05-15T13:52:48+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 2020-11-24 https://hdl.handle.net/10037/21176 https://doi.org/10.1016/j.envres.2020.110518 eng eng Elsevier Environmental Research Carravieri A, Warner Na, Herzke D, Brault-Favrou M, Tarroux A, Fort J, Bustamante P, Descamps S. Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels. Environmental Research. 2020;193 FRIDAID 1870593 doi:10.1016/j.envres.2020.110518 0013-9351 1096-0953 https://hdl.handle.net/10037/21176 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1016/j.envres.2020.110518 2021-06-25T17:58:00Z 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 (δ 13 C) and nitrogen (δ 15 N) 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 δ 15 N). Moulting trophic ecology did not predict blood Hg concentrations. PCB concentrations were very low (Σ 7 PCBs, 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 maternal Hg or OC concentrations. Legacy contaminant exposure does not seem to represent a threat for the breeding fraction of this population over the short term. Yet, exposure to contaminants, especially Mirex, and other concurring environmental stressors should be monitored over the long-term in this declining population. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land Thalassoica antarctica University of Tromsø: Munin Open Research Archive Antarctic Austral Dronning Maud Land Svarthamaren ENVELOPE(3.423,3.423,-54.438,-54.438) Environmental Research 193 110518 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 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 |
topic_facet |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
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 (δ 13 C) and nitrogen (δ 15 N) 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 δ 15 N). Moulting trophic ecology did not predict blood Hg concentrations. PCB concentrations were very low (Σ 7 PCBs, 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 maternal Hg or OC concentrations. Legacy contaminant exposure does not seem to represent a threat for the breeding fraction of this population over the short term. Yet, exposure to contaminants, especially Mirex, and other concurring environmental stressors should be monitored over the long-term in this declining population. |
format |
Article in Journal/Newspaper |
author |
Carravieri, Alice Warner, Nicholas Alexander Herzke, Dorte Brault-Favrou, Maud Tarroux, Arnaud Fort, Jérôme Bustamante, Paco Descamps, Sebastien |
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 |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/21176 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_relation |
Environmental Research Carravieri A, Warner Na, Herzke D, Brault-Favrou M, Tarroux A, Fort J, Bustamante P, Descamps S. Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels. Environmental Research. 2020;193 FRIDAID 1870593 doi:10.1016/j.envres.2020.110518 0013-9351 1096-0953 https://hdl.handle.net/10037/21176 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1016/j.envres.2020.110518 |
container_title |
Environmental Research |
container_volume |
193 |
container_start_page |
110518 |
_version_ |
1766257561840910336 |