Copepod feeding study in the upper layer of the tropical South China Sea

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	Copepod feeding study in the upper layer of the tropical South China Sea
	Hwang, JS; Tseng, LC; Dahms, HU; Chen, QC; jshwang@mail.ntou.edu.tw
刊名	HELGOLAND MARINE RESEARCH
	2009
卷号	63 期号:4 页码:327-337
关键词	Copepod Gut Content Feeding Evacuation Rate Ingestion Rate South China Sea
ISSN号	1438-387X
英文摘要	The South China Sea (SCS) is the world's largest marginal sea being notable for vertical mixing at various scales resulting in a sequence of chemical and biological dynamics in surface waters. We investigated the ingestion, gut content, evacuation and clearance rates of copepods collected from six stations (including a South East Asia Time Series station) along a transect line in the tropical of a SCS cruise during September 27, 1999 to October 2, 1999. The goal of the present study was to understand the feeding ecology of copepods in the upper water layers (0-5 m) of the northern SCS during autumn. We measured the gut pigment contents of 33 copepod species by the gut fluorescence method. The gut chlorophyll a values of most small size copepods (< 1 mm) were lower than 1.00 ng Chl a individual(-1). The highest gut pigment content was recorded in Scolecithrix danae (7.07 ng Chl a individual(-1)). The gut pigment contents of 33 copepod species (including 70 samples and 1,290 individuals) estimated is negatively correlated with seawater temperature (Pearson correlation r = -0.292, P = 0.014) and is positively correlated with the chlorophyll a concentration of ambient waters (Pearson correlation r = 0.243, P = 0.043). Mean gut pigment content, ingestion and clearance rates (from 80 samples and 1,468 individuals) show that larger copepods (> 2 mm) had significantly higher values than medium sized copepods (1-2 mm) and smaller sized copepods. The present study shows that the performance of feeding on phytoplankton was variable in different sized copepod groups, suggesting that copepods obtained in the tropical area of the southeastern Taiwan Strait might be opportunistic feeders.
学科主题	Marine & Freshwater Biology ; Oceanography
URL标识	查看原文
资助项目	LMB
WOS记录号	WOS:000270870400007
公开日期	2011-07-03
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/5056]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
通讯作者	jshwang@mail.ntou.edu.tw
推荐引用方式 GB/T 7714	Hwang, JS,Tseng, LC,Dahms, HU,et al. Copepod feeding study in the upper layer of the tropical South China Sea[J]. HELGOLAND MARINE RESEARCH,2009,63(4):327-337.
APA	Hwang, JS,Tseng, LC,Dahms, HU,Chen, QC,&jshwang@mail.ntou.edu.tw.(2009).Copepod feeding study in the upper layer of the tropical South China Sea.HELGOLAND MARINE RESEARCH,63(4),327-337.
MLA	Hwang, JS,et al."Copepod feeding study in the upper layer of the tropical South China Sea".HELGOLAND MARINE RESEARCH 63.4(2009):327-337.