Studies on trophic niches of Macrobrachium nipponensis and Exopalaemon modestus

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	Studies on trophic niches of Macrobrachium nipponensis and Exopalaemon modestus
	Zhang, Huan (1) ; Xie, Ping (1) ; Wu, Gong-Guo (2) ; Zhang, Huan (2) ; Zhang, Pei-Yu (2) ; Xu, Jun (2)
刊名	Research of Environmental Sciences
	2013
卷号	26 期号:1 页码:22-26
关键词	Isotopes Shellfish Water analysis
ISSN号	10016929
通讯作者	Xie, P.(xieping@ihb.ac.cn)
中文摘要	This study was undertaken to assess the trophic niches and niche widths between two freshwater shrimps, Macrobrachium nipponensis and Exopalaemon modestus, from the Yangtze River-connected lakes-Dongting lake and Poyang lake-using stable carbon and nitrogen isotope analysis. The overall aim was to provide the information valuable for evaluation of trophic relationships and for protection of natural resources. Results showed significant differences in δ¹³C values between M. nipponensis and E. modestus, but no difference in δ¹⁵N values between two species. Meanwhile, differences in isotopic variations of shrimps were found between lakes which had differences in nutrient level and in hydrology. The range of δ¹³C signatures in M. nipponensis was greater than those of E. modestus and mainly distributed from -25.0‰ to -23.0‰, indicating that M. nipponensis fed on more food sources but preferred a certain one. There was a large overlap of trophic niches between the two species. This result indicated that food consumed were nearly the same for both species, implying similar trophic positions and strong inter-composition. In the Poyang Lake, M. nipponensis had a trophic niche and niche width larger than E. modestus. However, there were opposite observations in the Dongting Lake due to variations of sampling habitats and the degree of human disturbances.
收录类别	EI
公开日期	2014-07-29
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/19942]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
推荐引用方式 GB/T 7714	Zhang, Huan ,Xie, Ping ,Wu, Gong-Guo ,et al. Studies on trophic niches of Macrobrachium nipponensis and Exopalaemon modestus[J]. Research of Environmental Sciences,2013,26(1):22-26.
APA	Zhang, Huan ,Xie, Ping ,Wu, Gong-Guo ,Zhang, Huan ,Zhang, Pei-Yu ,&Xu, Jun .(2013).Studies on trophic niches of Macrobrachium nipponensis and Exopalaemon modestus.Research of Environmental Sciences,26(1),22-26.
MLA	Zhang, Huan ,et al."Studies on trophic niches of Macrobrachium nipponensis and Exopalaemon modestus".Research of Environmental Sciences 26.1(2013):22-26.