Mercury Content of Feathers of Three Individuals of Streaked Shearwaters

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  • Iwasaki Mayu
    Graduate School of Fisheries Sciences, Hokkaido University
  • Azumi Sarara
    Graduate School of Fisheries Sciences, Hokkaido University
  • Ishizuka Mayumi
    Graduate School of Veterinary Medicine, Hokkaido University
  • Ikenaka Yoshinori
    Graduate School of Veterinary Medicine, Hokkaido University One Health Research Center, Hokkaido University
  • Kunisue Tatsuya
    Center for Marine Environmental Studies, Ehime University
  • Watanuki Yutaka
    Graduate School of Fisheries Sciences, Hokkaido University

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Other Title
  • オオミズナギドリ3個体の各羽の水銀濃度
  • オオミズナギドリ 3 コタイ ノ カク ウ ノ スイギン ノウド

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Abstract

<p>Middle-sized Procellariidae replace each feather in order once a year. We measured total mercury contents ([Hg]) of each feather of 3 individuals of Streaked Shearwaters Calonectris leucomelas found dead in March in Kyoto, Japan. [Hg] was moderate in the back feathers, highest in the inner primaries (P1, P2), decreased to be low in the outermost primary (P10) and all tail feathers (R1 – R6). The excretion of mercury through molting partly explains the seasonal change of the mercury contents in the body.</p>

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