Marine Ecology Progress Series | |
Feather mercury concentration in streaked shearwaters wintering in separate areas of southeast Asia | |
Takashi Yamamoto1  Philip N. Trathan1  Shouta M. M. Nakayama1  Yutaka Watanuki1  Motohiro Ito1  Ai Yamashita1  Chihiro Ishii1  Tomohiro Kuwae1  Yoshinori Ikenaka1  Mayumi Ishizuka1  | |
关键词: Geolocator; Migration; δ15N; Breeding; | |
DOI : 10.3354/meps11669 | |
学科分类:海洋学与技术 | |
来源: Inter-Research | |
【 摘 要 】
ABSTRACT: 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.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201912010136877ZK.pdf | 8KB | download |