Hepatic trace element concentrations of breeding female common eiders across a latitudinal gradient in the eastern Canadian Arctic
| Autor: | Gregory J. Robertson, H. Grant Gilchrist, Mark L. Mallory, Birgit M. Braune, Jennifer F. Provencher, Mark R. Forbes, Conor D. Mallory |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Canada chemistry.chemical_element Breeding 010501 environmental sciences Aquatic Science Biology Oceanography 01 natural sciences Arsenic Latitude Selenium Animals 0105 earth and related environmental sciences Manganese Cadmium Arctic Regions 010604 marine biology & hydrobiology Trace element Mercury Pollution Trace Elements Mercury (element) Zinc Ducks Liver Arctic chemistry Benthic zone Environmental chemistry Female Environmental Monitoring |
| Zdroj: | Marine Pollution Bulletin. 124:252-257 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2017.07.050 |
| Popis: | We examined hepatic concentrations of arsenic (As), cadmium (Cd), copper (Cu), lead (Pb), manganese (Mn), mercury (Hg), rubidium (Rb), selenium (Se) and zinc (Zn) in 10 breeding female common eiders (Somateria mollissima) from each of three colonies across 20° of latitude. Levels of many elements were elevated in eiders, although generally below levels of toxicological concern. We found significant differences in concentrations of As, Rb, Hg, Mn and Se among colonies, but not in a consistent pattern with latitude, and Hg:Se molar ratios did not vary among colonies. Furthermore, overlap in element concentrations from birds at different colonies meant that we could not reliably differentiate birds from different colonies based on a suite of their hepatic trace element concentrations. We encourage other researchers to assess baseline trace element levels on this important, harvested species, as a means of tracking contamination of nearshore benthic environments in the circumpolar Arctic. |
| Databáze: | OpenAIRE |
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