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	Growth and grazing responses to temperature and prey concentration of Condylostoma spatiosum, a large benthic ciliate, feeding on Oxyrrhis marina
	Li, Chengchun1,2; Xu, Kuidong1; Lei, Yanli1; Xu, KD (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
刊名	AQUATIC MICROBIAL ECOLOGY
	2011
卷号	64期号:1页码:97-104
关键词	Benthic Ciliate Growth Rate Ingestion Rate Gross Growth Efficiency Prey Concentration Temperature
ISSN号	0948-3055
DOI	10.3354/ame01521
文献子类	Article
英文摘要	Condylostoma is as a group of very large-sized ciliates frequently dominant in various marine benthic microbial communities. However, little is known about the effects of temperature and food concentration on its growth and grazing. Here, using the heterotrophic dinoflagellate Oxyrrhis marina as prey, we determined the specific growth rate, cell volume, specific production, and ingestion rate of C. spatiosum at different temperatures and prey concentrations. These growth and grazing parameters typically followed a hyperbolic response to prey concentration. By applying iterative curve-fitting to the data at each temperature, we found that, with increasing temperature, the maximum specific growth rate, maximum specific production, and maximum ingestion rate of C. spatiosum generally increased, while the maximum cell volume decreased. The gross growth efficiency of C. spatiosum generally decreased at saturated prey concentration from about 45 to 25% as the temperature increased from 12 to 24 degrees C. By fitting these data iteratively to multi-variable nonlinear models, we obtained predictive equations for the growth rate, cell volume, and ingestion rate with respect to temperature and prey concentration.; Condylostoma is as a group of very large-sized ciliates frequently dominant in various marine benthic microbial communities. However, little is known about the effects of temperature and food concentration on its growth and grazing. Here, using the heterotrophic dinoflagellate Oxyrrhis marina as prey, we determined the specific growth rate, cell volume, specific production, and ingestion rate of C. spatiosum at different temperatures and prey concentrations. These growth and grazing parameters typically followed a hyperbolic response to prey concentration. By applying iterative curve-fitting to the data at each temperature, we found that, with increasing temperature, the maximum specific growth rate, maximum specific production, and maximum ingestion rate of C. spatiosum generally increased, while the maximum cell volume decreased. The gross growth efficiency of C. spatiosum generally decreased at saturated prey concentration from about 45 to 25% as the temperature increased from 12 to 24 degrees C. By fitting these data iteratively to multi-variable nonlinear models, we obtained predictive equations for the growth rate, cell volume, and ingestion rate with respect to temperature and prey concentration.
学科主题	Ecology ; Marine & Freshwater Biology ; Microbiology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000292988300008
公开日期	2012-07-03
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/11394]
专题	海洋研究所_海洋生物分类与系统演化实验室
通讯作者	Xu, KD (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Chengchun,Xu, Kuidong,Lei, Yanli,et al. Growth and grazing responses to temperature and prey concentration of Condylostoma spatiosum, a large benthic ciliate, feeding on Oxyrrhis marina[J]. AQUATIC MICROBIAL ECOLOGY,2011,64(1):97-104.
APA	Li, Chengchun,Xu, Kuidong,Lei, Yanli,&Xu, KD .(2011).Growth and grazing responses to temperature and prey concentration of Condylostoma spatiosum, a large benthic ciliate, feeding on Oxyrrhis marina.AQUATIC MICROBIAL ECOLOGY,64(1),97-104.
MLA	Li, Chengchun,et al."Growth and grazing responses to temperature and prey concentration of Condylostoma spatiosum, a large benthic ciliate, feeding on Oxyrrhis marina".AQUATIC MICROBIAL ECOLOGY 64.1(2011):97-104.

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