Diel vertical distribution and migration of a euphausiid Euphausia pacifica in the Southern Yellow Sea

doi:10.1016/j.dsr2.2009.10.009

	Diel vertical distribution and migration of a euphausiid Euphausia pacifica in the Southern Yellow Sea
	Liu, Hui-Lian 2; Sun, Song1
	2010-04-01
发表期刊	DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
卷号	57 期号:7-8 页码:594-605
文章类型	Article
摘要	Stage-specific differences in the diel vertical distribution and migration of a euphausiid, Euphausia pacifica, were studied at a single station (E2,70 m water depth) in the South Yellow Sea, by sampling with a conical closing net from five discrete strata, every 3 h, for 24 h, on 2-3 May 2001. Environmental data were collected simultaneously with the net sampling. Results showed that eggs contributed a large proportion of the numerical abundance of the Euphausia pacifica population throughout the investigation. They were mainly distributed below 20 m depth, and concentrated in the 30-50 m strata throughout the day and night. Nauplius stage I (NI) was distributed below 10 m, and seldom occurred in the upper 10 m. Nauplius stage II (NII) and Metanauplius stage (MN) extended their distribution to nearly the whole water column; however, the MN resided somewhat shallower than NIL The majority of calyptopis stages I to III (CI to CIII) and early furcilia stages I to III (FI to FIII) were restricted to the upper 30 m throughout the day. The weighted mean depth tended to increase as the stage progressed from stage FI onward. Calyptopis stages showed a weak or moderate diel vertical migration behavior, and the onset of an obvious diel vertical migration took place in FII stage. The amplitude of the diel vertical migration varied with developmental stages. Stages after FIV were often absent from samples during the investigation, but from the limited available data, DVM occurred from stages FIV-VI and female adults. However, the male adults showed a somewhat different migration behavior. In summary, an ontogenetic migration pattern is obvious from this high-frequency sampling: spawning took place at 20-50 m depth, hatched nauplii sank a little, metanauplius began moving toward the surface, and calyptopis larvae reached the uppermost layer. Furcilia larvae began DVM and deepened their daytime residence depth with age. The vertical distribution of Euphausia pacifica seemed to relate to temperature and chlorophyll a. (C) 2009 Elsevier Ltd. All rights reserved.
关键词	Euphausia Pacifica Euphausiid Vertical Distribution Diel Vertical Migration Yellow Sea
DOI	10.1016/j.dsr2.2009.10.009
收录类别	SCI
语种	英语
WOS记录号	WOS:000277069300011
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/32814
专题	海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Dept Marine Organism Taxon & Phylogeny, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Liu, Hui-Lian,Sun, Song. Diel vertical distribution and migration of a euphausiid Euphausia pacifica in the Southern Yellow Sea[J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,2010,57(7-8):594-605.
APA	Liu, Hui-Lian,&Sun, Song.(2010).Diel vertical distribution and migration of a euphausiid Euphausia pacifica in the Southern Yellow Sea.DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,57(7-8),594-605.
MLA	Liu, Hui-Lian,et al."Diel vertical distribution and migration of a euphausiid Euphausia pacifica in the Southern Yellow Sea".DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY 57.7-8(2010):594-605.

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