Evaluation of removal of the size effect using data scaling and elliptic Fourier descriptors in otolith shape analysis, exemplified by the discrimination of two yellow croaker stocks along the Chinese coast

doi:10.1007/s00343-017-6012-x

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Evaluation of removal of the size effect using data scaling and elliptic Fourier descriptors in otolith shape analysis, exemplified by the discrimination of two yellow croaker stocks along the Chinese coast
	Zhao Bo1,2 ; Liu Jinhu 1; Song Junjie1,2 ; Cao Liang 1; Dou Shuozeng 1,2,3
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2017-11-01
卷号	35 期号:6 页码:1482-1492
关键词	otolith shape analysis data scaling for fish length stock discrimination removal of length effect
ISSN号	0254-4059
DOI	10.1007/s00343-017-6012-x
通讯作者	Dou Shuozeng(szdou@qdio.ac.cn)
英文摘要	Removal of the length effect in otolith shape analysis for stock identification using length scaling is an important issue; however, few studies have attempted to investigate the effectiveness or weakness of this methodology in application. The aim of this study was to evaluate whether commonly used size scaling methods and normalized elliptic Fourier descriptors (NEFDs) could effectively remove the size effect of fish in stock discrimination. To achieve this goal, length groups from two known geographical stocks of yellow croaker, Larimichthys polyactis, along the Chinese coast (five groups from the Changjiang River estuary of the East China Sea and three groups from the Bohai Sea) were subjected to otolith shape analysis. The results indicated that the variation of otolith shape caused by intra-stock fish length might exceed that due to inter-stock geographical separation, even when otolith shape variables are standardized with length scaling methods. This variation could easily result in misleading stock discrimination through otolith shape analysis. Therefore, conclusions about fish stock structure should be carefully drawn from otolith shape analysis because the observed discrimination may primarily be due to length effects, rather than differences among stocks. The application of multiple methods, such as otoliths shape analysis combined with elemental fingering, tagging or genetic analysis, is recommended for sock identification.
资助项目	National Basic Research Program of China (973 Program)[2015CB453302] ; NSFC-Shandong Joint Fund for Marine Science Research Centre[U1606404] ; Aoshan Science and Technology Innovation Project[2015ASKJ02-04]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000415810900019
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/157317]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Dou Shuozeng
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhao Bo,Liu Jinhu,Song Junjie,et al. Evaluation of removal of the size effect using data scaling and elliptic Fourier descriptors in otolith shape analysis, exemplified by the discrimination of two yellow croaker stocks along the Chinese coast[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2017,35(6):1482-1492.
APA	Zhao Bo,Liu Jinhu,Song Junjie,Cao Liang,&Dou Shuozeng.(2017).Evaluation of removal of the size effect using data scaling and elliptic Fourier descriptors in otolith shape analysis, exemplified by the discrimination of two yellow croaker stocks along the Chinese coast.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,35(6),1482-1492.
MLA	Zhao Bo,et al."Evaluation of removal of the size effect using data scaling and elliptic Fourier descriptors in otolith shape analysis, exemplified by the discrimination of two yellow croaker stocks along the Chinese coast".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 35.6(2017):1482-1492.