Feather mercury concentration in streaked shearwaters wintering in separate areas of southeast Asia
Feather mercury concentration in streaked shearwaters wintering in separate areas of southeast Asia
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DOI：
10.3354/meps11669
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发表时间：
2016-03
影响因子：
2.5
通讯作者：
Y. Watanuki;Ai Yamashita;M. Ishizuka;Y. Ikenaka;S. Nakayama;Chihiro Ishii;Takashi Yamamoto;Motohiro Ito;T. Kuwae;P. Trathan
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文献类型：
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作者：
Y. Watanuki;Ai Yamashita;M. Ishizuka;Y. Ikenaka;S. Nakayama;Chihiro Ishii;Takashi Yamamoto;Motohiro Ito;T. Kuwae;P. Trathan
对在日本3个岛屿繁殖的斑尾剪鸥（Calonectris leucomelas）在非繁殖期更换的尾羽中汞浓度（[Hg]）和氮稳定同位素（δ 15 N）进行了测定。这些鸟的全年活动都被跟踪，它们的繁殖状况也被监测。[Hg]雄性比雌性高，在中国南海度过非繁殖期的鸟类中最高（3.1 ± 1.5 µg g g-1干重），阿拉弗拉海鸟类中等（1.5 ± 0.7 µg g-1），新几内亚北部太平洋鸟类最低（0.8 ± 0.4 µg g g-1）。未观察到羽毛[Hg]对繁殖状况的不利影响。羽毛[Hg]的这种区域性差异可能部分反映了这些非繁殖区之间汞摄入量的差异，以及繁殖后期和向南迁移期间的积累
We measured mercury concentration ([Hg]) and nitrogen stable isotope values (δ15N) in tail feathers that were replaced during the non-breeding period of streaked shearwaters Calonectris leucomelas that bred on 3 islands in Japan. The birds’ year-round movements were tracked and their breeding status was monitored. [Hg] was greater in males than in females, and was greatest in those birds spending their non-breeding period in the South China Sea (3.1 ± 1.5 µg g-1 dry weight), moderate in birds in the Arafura Sea (1.5 ± 0.7 µg g-1), and lowest in birds in the Pacific Ocean north of New Guinea (0.8 ± 0.4 µg g-1). Adverse effects of feather [Hg] on breeding status were not observed. This regional variation in feather [Hg] might partly reflect differences in the intake of Hg between these non-breeding areas in addition to accumulation during the late breeding period and the southward migration period