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      Metal and selenium concentrations in blood and feathers of petrels of the genusProcellaria : Metals and selenium inProcellariapetrels

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          Abstract

          <p class="first" id="d6839356e72">Concentrations of copper (Cu), zinc (Zn), cadmium (Cd), lead (Pb), mercury (Hg), and selenium (Se) were determined in blood and feathers of spectacled (Procellaria conspicillata) and white-chinned (Procellaria aequinoctialis) petrels, species that are phylogenetically related, but with distinct ecological niches. In winter, they feed on similar foods, indicated by an overlapping range of whole-blood stable isotopes values (δ(15) N; δ(13) C). No relation was found between blood metal concentration and stable isotope values. In spectacled petrels, metal concentrations appeared lower in blood (Cu = 0.79-20.77 µg/g; Zn = 10.95-28.02 µg/g; Cd = 1.73-10.11 µg/g; Pb = 5.02-26.03 µg/g; Hg = 0.84-9.86 µg/g) than in feathers (Cu = 1.05-21.57 µg/g; Zn = 45.30-81.49 µg/g; Cd = 3.76-10.44 µg/g; Pb = 16.53-59.00 µg/g; Hg = 4.24-24.03 µg/g). In white-chinned petrels, metal concentrations also appeared lower in blood (Cu = 0.62-10.4 µg/g; Zn = 10.73-24.69 µg/g; Cd = 2.00-6.31 µg/g; Pb = 5.72-24.03 µg/g) than in feathers (Cu = 2.68-23.92 µg/g; Zn = 48.96-93.54 µg/g; Cd = 5.72-24.03 µg/g; Pb = 18.62-55.51 µg/g), except for Hg (blood = 0.20-15.82 µg/g; feathers = 0.19-8.91 µg/g). Selenium (0.24-14.18 µg/g) and Hg (0.22-1.44 µg/g) concentrations showed a positive correlation in growing feathers of spectacled petrels. Blood and feather Hg levels were higher in spectacled petrels while feathers Cu and Zn concentrations were greater in white-chinned petrels. Juvenile white-chinned petrels exhibited greater blood Hg concentrations than adults. In the south Atlantic Ocean, discards from commercial fishing operations consumed by spectacled petrels year-round and by white-chinned petrels during the wintering period have elevated Hg concentrations. Because Hg toxicity is associated with behavioral and reproductive changes in birds, it could potentially have impacts on breeding of these seabirds, as both species are listed as threatened by extinction. </p>

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          Author and article information

          Journal
          Environmental Toxicology and Chemistry
          Environ Toxicol Chem
          Wiley
          07307268
          May 2013
          May 2013
          May 23 2013
          : n/a
          Affiliations
          [1 ]Graduate Program in Biological Oceanography; Federal University of Rio Grande; Rio Grande, Rio Grande do Sul; Brazil
          [2 ]Natural Environment Research Council Life Sciences Mass Spectrometry Facility; Scottish Universities Environmental Research Centre, Scottish Enterprise Technology Park; Glasgow; United Kingdom
          Article
          10.1002/etc.2204
          23440884
          102caa98-2c00-44fc-aec5-70d850f008b3
          © 2013

          http://doi.wiley.com/10.1002/tdm_license_1.1

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