Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp
We analysed concentrations of cadmium, lead, mercury and selenium in blood from males and females of the 2 sibling species of giant petrels, the northern Macronectes halli and the southern M. giganteus, breeding sympatrically at Bird Island (South Georgia, Antarctica). Blood samples were collected i...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/13390/ http://www.int-res.com/articles/meps2002/244/m244p257.pdf |
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ftnerc:oai:nora.nerc.ac.uk:13390 2023-05-15T13:45:11+02:00 Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp González-Solis, Jacob Sanpera, Carola Ruiz, Xavier 2002 http://nora.nerc.ac.uk/id/eprint/13390/ http://www.int-res.com/articles/meps2002/244/m244p257.pdf unknown Inter-Research González-Solis, Jacob; Sanpera, Carola; Ruiz, Xavier. 2002 Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp. Marine Ecology Progress Series, 244. 257-264. https://doi.org/10.3354/meps244257 <https://doi.org/10.3354/meps244257> Marine Sciences Biology and Microbiology Ecology and Environment Chemistry Publication - Article PeerReviewed 2002 ftnerc https://doi.org/10.3354/meps244257 2023-02-04T19:28:34Z We analysed concentrations of cadmium, lead, mercury and selenium in blood from males and females of the 2 sibling species of giant petrels, the northern Macronectes halli and the southern M. giganteus, breeding sympatrically at Bird Island (South Georgia, Antarctica). Blood samples were collected in 1998 during the incubation period, from 5 November to 10 December. Between species, cadmium and lead concentrations were significantly higher for northern than for southern giant petrels, which probably resulted from northern giant petrels wintering in more polluted areas (mainly on the Patagonian Shelf and Falkland Islands) compared to southern giant petrels (wintering mainly around South Georgia and the South Sandwich Islands). Between sexes, cadmium concentrations were significantly higher for females than for males in both species, corresponding to the more pelagic habits of females compared to the more scavenging habits of males. Lead and cadmium concentrations in circulating blood decreased significantly over the incubation period, suggesting that when breeding at Bird Island, exposure to the source of pollution had ended, and these metals had been cleared from the blood and excreted, or rapidly transferred to other tissues. Association of lead and cadmium with a common source of pollution was further corroborated by a significant positive correlation between the levels of the 2 elements found. Mercury levels were similar between the species, but showed an opposite trend between sexes, with males showing higher levels than females in northern giant petrels, and the opposite was true in southern giant petrels, with no changes throughout incubation. Selenium levels were similar between sexes, but significantly greater for northern than for southern giant petrels. Moreover, there was a significant increase in the selenium levels over the incubation period in northern giant petrels. Age of adult birds did not affect metal concentrations. Coefficients of variation of metal levels were consistently lower for ... Article in Journal/Newspaper Antarc* Antarctica Bird Island Giant Petrels South Sandwich Islands Natural Environment Research Council: NERC Open Research Archive Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Giganteus ENVELOPE(62.500,62.500,-67.567,-67.567) Sandwich Islands South Georgia ENVELOPE(-33.000,-33.000,-56.000,-56.000) South Sandwich Islands Marine Ecology Progress Series 244 257 264 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Biology and Microbiology Ecology and Environment Chemistry |
spellingShingle |
Marine Sciences Biology and Microbiology Ecology and Environment Chemistry González-Solis, Jacob Sanpera, Carola Ruiz, Xavier Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp |
topic_facet |
Marine Sciences Biology and Microbiology Ecology and Environment Chemistry |
description |
We analysed concentrations of cadmium, lead, mercury and selenium in blood from males and females of the 2 sibling species of giant petrels, the northern Macronectes halli and the southern M. giganteus, breeding sympatrically at Bird Island (South Georgia, Antarctica). Blood samples were collected in 1998 during the incubation period, from 5 November to 10 December. Between species, cadmium and lead concentrations were significantly higher for northern than for southern giant petrels, which probably resulted from northern giant petrels wintering in more polluted areas (mainly on the Patagonian Shelf and Falkland Islands) compared to southern giant petrels (wintering mainly around South Georgia and the South Sandwich Islands). Between sexes, cadmium concentrations were significantly higher for females than for males in both species, corresponding to the more pelagic habits of females compared to the more scavenging habits of males. Lead and cadmium concentrations in circulating blood decreased significantly over the incubation period, suggesting that when breeding at Bird Island, exposure to the source of pollution had ended, and these metals had been cleared from the blood and excreted, or rapidly transferred to other tissues. Association of lead and cadmium with a common source of pollution was further corroborated by a significant positive correlation between the levels of the 2 elements found. Mercury levels were similar between the species, but showed an opposite trend between sexes, with males showing higher levels than females in northern giant petrels, and the opposite was true in southern giant petrels, with no changes throughout incubation. Selenium levels were similar between sexes, but significantly greater for northern than for southern giant petrels. Moreover, there was a significant increase in the selenium levels over the incubation period in northern giant petrels. Age of adult birds did not affect metal concentrations. Coefficients of variation of metal levels were consistently lower for ... |
format |
Article in Journal/Newspaper |
author |
González-Solis, Jacob Sanpera, Carola Ruiz, Xavier |
author_facet |
González-Solis, Jacob Sanpera, Carola Ruiz, Xavier |
author_sort |
González-Solis, Jacob |
title |
Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp |
title_short |
Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp |
title_full |
Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp |
title_fullStr |
Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp |
title_full_unstemmed |
Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp |
title_sort |
metals and selenium as bioindicators of geographic and trophic segregation in giant petrels macronectes spp |
publisher |
Inter-Research |
publishDate |
2002 |
url |
http://nora.nerc.ac.uk/id/eprint/13390/ http://www.int-res.com/articles/meps2002/244/m244p257.pdf |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) ENVELOPE(62.500,62.500,-67.567,-67.567) ENVELOPE(-33.000,-33.000,-56.000,-56.000) |
geographic |
Bird Island Giganteus Sandwich Islands South Georgia South Sandwich Islands |
geographic_facet |
Bird Island Giganteus Sandwich Islands South Georgia South Sandwich Islands |
genre |
Antarc* Antarctica Bird Island Giant Petrels South Sandwich Islands |
genre_facet |
Antarc* Antarctica Bird Island Giant Petrels South Sandwich Islands |
op_relation |
González-Solis, Jacob; Sanpera, Carola; Ruiz, Xavier. 2002 Metals and selenium as bioindicators of geographic and trophic segregation in giant petrels Macronectes spp. Marine Ecology Progress Series, 244. 257-264. https://doi.org/10.3354/meps244257 <https://doi.org/10.3354/meps244257> |
op_doi |
https://doi.org/10.3354/meps244257 |
container_title |
Marine Ecology Progress Series |
container_volume |
244 |
container_start_page |
257 |
op_container_end_page |
264 |
_version_ |
1766215477120466944 |