Copepod feeding study in the upper layer of the tropical South China Sea
Tseng, LC; Dahms, HU; Chen, QC; Hwang, JS; jshwang@mail.ntou.edu.tw
2009
发表期刊HELGOLAND MARINE RESEARCH
ISSN1438-387X
卷号63期号:4页码:327-337
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.
部门归属[Tseng, Li-Chun; Dahms, Hans-Uwe; Hwang, Jiang-Shiou] Natl Taiwan Ocean Univ, Inst Marine Biol, Chilung 20224, Taiwan; [Chen, Qing-Chao] Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
关键词Copepod Gut Content Feeding Evacuation Rate Ingestion Rate South China Sea
学科领域Marine & Freshwater Biology ; Oceanography
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收录类别sci
资助项目LMB
WOS记录号WOS:000270870400007
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/5056
专题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
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Tseng, LC,Dahms, HU,Chen, QC,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 Tseng, LC,Dahms, HU,Chen, QC,Hwang, JS,&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 Tseng, LC,et al."Copepod feeding study in the upper layer of the tropical South China Sea".HELGOLAND MARINE RESEARCH 63.4(2009):327-337.
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