Mercury concentrations in king penguin (Aptenodytes patagonicus) feathers at Crozet Islands (sub-Antarctic): temporal trend between 1966--1974 and 2000--2001.
International audience Remote sub-Antarctic islands and their wildlife may be contaminated by mercury via atmospheric and oceanic currents. Because of mercury's high toxicity and its capacity to be biomagnified in marine food chains, top predators like seabirds may be threatened by secondary po...
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ftunivnantes:oai:HAL:hal-00342445v1 2023-05-15T13:35:42+02:00 Mercury concentrations in king penguin (Aptenodytes patagonicus) feathers at Crozet Islands (sub-Antarctic): temporal trend between 1966--1974 and 2000--2001. Scheifler, Renaud Gauthier-Clerc, Michel Le Bohec, Céline Crini, Nadia Coeurdassier, Michael Badot, Pierre-Marie Giraudoux, Patrick Le Maho, Yvon Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Station Biologique de la Tour du Valat Centre d'écologie et physiologie énergétiques (CEPE) Centre National de la Recherche Scientifique (CNRS) 2005-01 https://hal.science/hal-00342445 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/pmid/15683175 hal-00342445 https://hal.science/hal-00342445 PUBMED: 15683175 ISSN: 0730-7268 EISSN: 1552-8618 Environmental Toxicology and Chemistry https://hal.science/hal-00342445 Environmental Toxicology and Chemistry, 2005, 24 (1), pp.125-8 [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2005 ftunivnantes 2023-02-08T03:45:42Z International audience Remote sub-Antarctic islands and their wildlife may be contaminated by mercury via atmospheric and oceanic currents. Because of mercury's high toxicity and its capacity to be biomagnified in marine food chains, top predators like seabirds may be threatened by secondary poisoning. The present study provides data regarding mercury concentrations in breast feathers sampled in 2000 and 2001 on king penguins (Aptenodytes patagonicus) living at Crozet Islands. These contemporary concentrations were compared to those measured in feathers of king penguins sampled in the same colony between 1966 and 1974 and preserved in a museum (1970s sample). The average concentration of the contemporary sample is 1.98 microg g(-1) (dry mass) and is significantly different than the concentrations reported in some other penguin species. The concentration of the contemporary sample is significantly lower than the concentration of the 1970s sample (2.66 microg g(-1)). This suggests that mercury concentrations in southern hemisphere seabirds do not increase, which conflicts with the trends observed in the northern hemisphere. This difference in temporal trends between the northern and southern hemispheres usually is attributed mainly to a higher degree of pollutant emission in the northern hemisphere. Parameters that may explain the interspecies differences in mercury concentrations are discussed. These first results may constitute a basis for further ecotoxicological and/or biomonitoring studies of king penguins in these remote ecosystems. Article in Journal/Newspaper Antarc* Antarctic Crozet Islands King Penguins Université de Nantes: HAL-UNIV-NANTES Antarctic |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes Scheifler, Renaud Gauthier-Clerc, Michel Le Bohec, Céline Crini, Nadia Coeurdassier, Michael Badot, Pierre-Marie Giraudoux, Patrick Le Maho, Yvon Mercury concentrations in king penguin (Aptenodytes patagonicus) feathers at Crozet Islands (sub-Antarctic): temporal trend between 1966--1974 and 2000--2001. |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience Remote sub-Antarctic islands and their wildlife may be contaminated by mercury via atmospheric and oceanic currents. Because of mercury's high toxicity and its capacity to be biomagnified in marine food chains, top predators like seabirds may be threatened by secondary poisoning. The present study provides data regarding mercury concentrations in breast feathers sampled in 2000 and 2001 on king penguins (Aptenodytes patagonicus) living at Crozet Islands. These contemporary concentrations were compared to those measured in feathers of king penguins sampled in the same colony between 1966 and 1974 and preserved in a museum (1970s sample). The average concentration of the contemporary sample is 1.98 microg g(-1) (dry mass) and is significantly different than the concentrations reported in some other penguin species. The concentration of the contemporary sample is significantly lower than the concentration of the 1970s sample (2.66 microg g(-1)). This suggests that mercury concentrations in southern hemisphere seabirds do not increase, which conflicts with the trends observed in the northern hemisphere. This difference in temporal trends between the northern and southern hemispheres usually is attributed mainly to a higher degree of pollutant emission in the northern hemisphere. Parameters that may explain the interspecies differences in mercury concentrations are discussed. These first results may constitute a basis for further ecotoxicological and/or biomonitoring studies of king penguins in these remote ecosystems. |
author2 |
Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Station Biologique de la Tour du Valat Centre d'écologie et physiologie énergétiques (CEPE) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Scheifler, Renaud Gauthier-Clerc, Michel Le Bohec, Céline Crini, Nadia Coeurdassier, Michael Badot, Pierre-Marie Giraudoux, Patrick Le Maho, Yvon |
author_facet |
Scheifler, Renaud Gauthier-Clerc, Michel Le Bohec, Céline Crini, Nadia Coeurdassier, Michael Badot, Pierre-Marie Giraudoux, Patrick Le Maho, Yvon |
author_sort |
Scheifler, Renaud |
title |
Mercury concentrations in king penguin (Aptenodytes patagonicus) feathers at Crozet Islands (sub-Antarctic): temporal trend between 1966--1974 and 2000--2001. |
title_short |
Mercury concentrations in king penguin (Aptenodytes patagonicus) feathers at Crozet Islands (sub-Antarctic): temporal trend between 1966--1974 and 2000--2001. |
title_full |
Mercury concentrations in king penguin (Aptenodytes patagonicus) feathers at Crozet Islands (sub-Antarctic): temporal trend between 1966--1974 and 2000--2001. |
title_fullStr |
Mercury concentrations in king penguin (Aptenodytes patagonicus) feathers at Crozet Islands (sub-Antarctic): temporal trend between 1966--1974 and 2000--2001. |
title_full_unstemmed |
Mercury concentrations in king penguin (Aptenodytes patagonicus) feathers at Crozet Islands (sub-Antarctic): temporal trend between 1966--1974 and 2000--2001. |
title_sort |
mercury concentrations in king penguin (aptenodytes patagonicus) feathers at crozet islands (sub-antarctic): temporal trend between 1966--1974 and 2000--2001. |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00342445 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Crozet Islands King Penguins |
genre_facet |
Antarc* Antarctic Crozet Islands King Penguins |
op_source |
ISSN: 0730-7268 EISSN: 1552-8618 Environmental Toxicology and Chemistry https://hal.science/hal-00342445 Environmental Toxicology and Chemistry, 2005, 24 (1), pp.125-8 |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/15683175 hal-00342445 https://hal.science/hal-00342445 PUBMED: 15683175 |
_version_ |
1766069096059764736 |