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globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0171773
论文题名:	Validation of band counts in eyestalks for the determination of age of Antarctic krill, Euphausia superba
作者:	Raouf Kilada; Christian S. Reiss; So Kawaguchi; Robert A. King; Tsuyoshi Matsuda; Taro Ichii
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2017
发表日期:	2017-2-22
卷:	12, 期:2
语种:	英语
英文关键词:	Antarctica ; Antarctic Ocean ; Climate change ; Molting ; Marine ecosystems ; Fisheries science ; Glycerol ; Marine conservation
英文摘要:	Using known-age Antarctic krill (Euphausia superba) grown from eggs hatched at two different laboratories, we validate the annual pattern of bands deposited in the eyestalks of krill and determine the absolute age of these animals. Ages two through five years were validated, and these animals ranged from 37.1 to 62.6 mm in total length. The band counts in these individuals were either identical to their absolute ages, or only failed to agree by a few months, which demonstrates the accuracy of this method. Precision and bias were estimated graphically using Chang’s index (Coefficient of Variation = 5.03%). High accuracy and precision between readers and low ageing bias indicate that longitudinal sections of eyestalks can be used to age krill in wild samples and to develop age-based stock assessment models for krill. Archival samples preserved in formalin (5%) and stored in ambient conditions were also readable. Ageing preserved krill will provide the opportunity to examine changes in growth among krill populations within the Southern Ocean and to retrospectively examine changes in krill production over the last century to better understand the historical and future impacts of climate change on this critical Southern Ocean species.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0171773&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/25629
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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journal.pone.0171773.pdf（1616KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

University of New Brunswick, Saint John, Canada and Department of Marine Science, University of Suez Canal, Ismailia, Egypt;NOAA Fisheries, Antarctic Ecosystem Research Division, La Jolla, California, United States of America;Australian Antarctic Division, Kingston, Tasmania, Australia;Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, Tasmania, Australia;Australian Antarctic Division, Kingston, Tasmania, Australia;Port of Nagoya Public Aquarium, Nagoya, Japan;National Research Institute of Far Seas Fisheries, Yokohama, Japan

Recommended Citation:

Raouf Kilada,Christian S. Reiss,So Kawaguchi,et al. Validation of band counts in eyestalks for the determination of age of Antarctic krill, Euphausia superba[J]. PLOS ONE,2017-01-01,12(2)

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