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globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0084006
论文题名:	Vertebral Bomb Radiocarbon Suggests Extreme Longevity in White Sharks
作者:	Li Ling Hamady; Lisa J. Natanson; Gregory B. Skomal; Simon R. Thorrold
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-1-8
卷:	9, 期:1
语种:	英语
英文关键词:	Sharks ; Vertebrae ; Otolith ; Corals ; Oceans ; Collagens ; Diet ; Sexual dimorphism
英文摘要:	Conservation and management efforts for white sharks (Carcharodon carcharias) remain hampered by a lack of basic demographic information including age and growth rates. Sharks are typically aged by counting growth bands sequentially deposited in their vertebrae, but the assumption of annual deposition of these band pairs requires testing. We compared radiocarbon (Δ14C) values in vertebrae from four female and four male white sharks from the northwestern Atlantic Ocean (NWA) with reference chronologies documenting the marine uptake of 14C produced by atmospheric testing of thermonuclear devices to generate the first radiocarbon age estimates for adult white sharks. Age estimates were up to 40 years old for the largest female (fork length [FL]: 526 cm) and 73 years old for the largest male (FL: 493 cm). Our results dramatically extend the maximum age and longevity of white sharks compared to earlier studies, hint at possible sexual dimorphism in growth rates, and raise concerns that white shark populations are considerably more sensitive to human-induced mortality than previously thought.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0084006&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/19719
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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File Name/ File Size	Content Type	Version	Access	License
journal.pone.0084006.PDF（635KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, United States of America;Massachusetts Institute of Technology/Woods Hole Oceanographic Institution Joint Program in Oceanography/Applied Ocean Science and Engineering, Cambridge, Massachusetts, United States of America;Apex Predators Program, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Narragansett, Rhode Island, United States of America;Massachusetts Division of Marine Fisheries, New Bedford, Massachusetts, United States of America;Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, United States of America

Recommended Citation:

Li Ling Hamady,Lisa J. Natanson,Gregory B. Skomal,et al. Vertebral Bomb Radiocarbon Suggests Extreme Longevity in White Sharks[J]. PLOS ONE,2014-01-01,9(1)

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