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题名: Co-occurring bighead and silver carps show similar food preference but different isotopic niche overlap in different lakes
作者: Jayasinghe, U. Asanka D.1, 2, 3; Garcia-Berthou, Emili4; Li, Zhongjie1; Li, Wei1; Zhang, Tanglin1; Liu, Jiashou1
通讯作者: Liu, JS (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, 7 South Donghu Rd, Wuhan 430072, Peoples R China.
关键词: Sub-tropical lakes ; Chinese carps ; Filter-feeding fish ; delta C-13 and delta N-15 ; Layman metrics
刊名: ENVIRONMENTAL BIOLOGY OF FISHES
发表日期: 2015-04-01
DOI: 10.1007/s10641-014-0351-7
卷: 98, 期:4, 页:1185-1199
收录类别: SCI
文章类型: Article
部门归属: [Jayasinghe, U. Asanka D. ; Li, Zhongjie ; Li, Wei ; Zhang, Tanglin ; Liu, Jiashou] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China ; [Jayasinghe, U. Asanka D.] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Jayasinghe, U. Asanka D.] Univ Ruhuna, Dept Limnol, Matara 81000, Sri Lanka ; [Garcia-Berthou, Emili] Univ Girona, Inst Aquat Ecol, E-17071 Girona, Catalonia, Spain
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Ecology ; Marine & Freshwater Biology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology
英文摘要: Silver carp (Hypophthalmichthys molitrix) and bighead carp (Hypophthalmichthys nobilis) are among the most important fish species in aquaculture and have been introduced to many countries. The feeding ecology of these filter-feeding cyprinids is not well understood and has been mostly based on gut content analyses. We analyzed delta C-13 and delta N-15 stable isotope ratios of food resources and fish muscle tissues in four Chinese lakes, where these two species co-occur. Data analysis through Bayesian mixing models revealed that both fish species had similar diets within lakes, and where dietary shifts occurred, both species displayed dietary shifts simultaneously. Diet was generally based on plankton, however, detritus was the main food in eutrophic lake subjected to urban pollution, likely due to resource availability. Niche overlap and width were also variable but in general clear size-based resource partitioning was observed, with bighead carp preying more on zooplankton and occupying a higher trophic position and silver carp feeding more on phytoplankton. Food particles smaller than 64 mu m, had little importance in their diets.
关键词[WOS]: HYPOPHTHALMICHTHYS-MOLITRIX VAL ; STABLE-ISOTOPE ; PLANKTIVOROUS FISHES ; MEILIANG BAY ; GUT CONTENTS ; ARISTICHTHYS-NOBILIS ; PLANKTON COMMUNITY ; AQUACULTURE PONDS ; TROPHIC POSITION ; ILLINOIS RIVER
语种: 英语
WOS记录号: WOS:000350567300020
ISSN号: 0378-1909
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/23868
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Ruhuna, Dept Limnol, Matara 81000, Sri Lanka
4.Univ Girona, Inst Aquat Ecol, E-17071 Girona, Catalonia, Spain
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文件名: Co-occurring bighead and silver carps show similar food preference but different isotopic niche overlap in different lakes.pdf
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