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    Relationships between mercury burden, sex, and sexually selected feather ornaments in crested auklet (Aethia cristatella)

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    CRAU Hg ms 20200205.pdf
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    Accepted/final draft post-refe ...
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    Authors
    Bond, AL cc
    Jones, IL
    Issue date
    2020-03-04
    Submitted date
    2020-04-01
    Subject Terms
    Alcidae
    Asymmetry
    Mercury
    Ornament
    Quality
    
    Metadata
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    Abstract
    Individuals with higher contaminant burdens are expected to be in poorer physical health and be of lower individual body condition and energetic status, potentially resulting in reduced ornamentation or increased asymmetry in bilateral features. The degree and magnitude of this effect also would be expected to vary by sex, as female birds depurate contaminants into eggs. We tested for relationships among mercury in feathers, sex, and elaborate feather ornaments that relate to individual quality in crested auklets (Aethia cristatella), small planktivorous seabirds in the North Pacific Ocean. We found no relationships between mercury and the size of individuals’ forehead crest or degree of measurement asymmetry in auricular plumes, both of which are favoured by intersexual selection. Females had significantly greater mercury concentrations than males (females. 1.02 ± 0.39 μg/g; males, 0.75 ± 0.32 μg/g); but concentrations were below that known to have physiological effects, as expected for a secondary consumer. Sex differences in overwintering area for this long-distance migrant species (more females in the Kuroshio Current Large Marine Ecosystem than males) could be the reason for this seemingly counterintuitive result between sexes. Further research relating mercury burden to overwintering ecology and diet contents would build on our results and further elucidate interrelationships between sex, sexually selected feather ornaments and contaminant burden.
    Citation
    Bond, A.L., Jones, I.L. Relationships between mercury burden, sex, and sexually selected feather ornaments in crested auklet (Aethia cristatella). Environ Sci Pollut Res (2020). https://doi.org/10.1007/s11356-020-08219-z
    Publisher
    Springer Science and Business Media LLC
    Journal
    Environmental Science and Pollution Research
    URI
    http://hdl.handle.net/10141/622684
    DOI
    10.1007/s11356-020-08219-z
    Type
    Journal Article
    Item Description
    © 2020 Springer Nature Switzerland AG. The attached document is the authors’ final accepted/submitted version of the journal article. You are advised to consult the publisher’s version if you wish to cite from it.
    ISSN
    0944-1344
    EISSN
    1614-7499
    ae974a485f413a2113503eed53cd6c53
    10.1007/s11356-020-08219-z
    Scopus Count
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    Life sciences

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