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题名: Trophic niche differences between two congeneric goby species: evidence for ontogenetic diet shift and habitat use
作者: Guo, Zhiqiang1, 2, 3; Liu, Jiashou1; Lek, Sovan1, 2; Li, Zhongjie1; Zhu, Fengyue1; Tang, Jianfeng1; Cucherousset, Julien2
通讯作者: Liu, JS (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
关键词: Species co-occurrence ; Niche differentiation ; Ontogenetic niche shift ; Stable isotope analyses ; Rhinogobius ; Gut content analysis
刊名: AQUATIC BIOLOGY
发表日期: 2014
DOI: 10.3354/ab00530
卷: 20, 期:1, 页:23-33
收录类别: SCI
文章类型: Article
部门归属: [Guo, Zhiqiang; Liu, Jiashou; Lek, Sovan; Li, Zhongjie; Zhu, Fengyue; Tang, Jianfeng] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Guo, Zhiqiang; Lek, Sovan; Cucherousset, Julien] Univ Toulouse 3, CNRS, ENFA, UMR5174 EDB Lab Evolut & Div Biol, F-31062 Toulouse, France; [Guo, Zhiqiang] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Oceanog Trop, Guangzhou 510301, Guangdong, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [31172387]; Major Science and Technology Program for Water Pollution Control and Treatment of China [2012ZX07105-004]; National S&T Supporting Program [2012BAD25B08]; European Union [PERG08-GA-2010-276969]
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Food partitioning is one of the primary mechanisms facilitating the stable co-occurrence of competing species, but very few studies have investigated how food resource use of competing and closely related species varies with life-history stages and habitats. In Lake Erhai (China), the trophic niche of 2 congeneric and co-occurring invasive goby species (Rhinogobius cliffordpopei and R. giurinus) was examined to test the existence of an ontogenetic diet shift and to determine potential differences in trophic niche between species within a habitat and between habitats (i.e. littoral and profundal) within species. Results obtained from gut content and stable isotope analyses revealed a strong trophic niche shift during ontogeny, whereby juveniles mainly consumed macrozooplankton while sub-adults and adults increasingly consumed aquatic insects and Tubificidae. The trophic niche of juveniles was similar between species in each of the 2 habitats but significantly different for sub-adults and adults, notably in littoral habitat. Moreover, the trophic niche was similar between habitats for juveniles of each species, whereas it differed significantly between habitats for sub-adults and adults. This study demonstrates the importance of ontogeny and shows that habitat use can significantly affect food resource use and trophic relationships between 2 co-occurring fish species.
英文摘要: Food partitioning is one of the primary mechanisms facilitating the stable co-occurrence of competing species, but very few studies have investigated how food resource use of competing and closely related species varies with life-history stages and habitats. In Lake Erhai (China), the trophic niche of 2 congeneric and co-occurring invasive goby species (Rhinogobius cliffordpopei and R. giurinus) was examined to test the existence of an ontogenetic diet shift and to determine potential differences in trophic niche between species within a habitat and between habitats (i.e. littoral and profundal) within species. Results obtained from gut content and stable isotope analyses revealed a strong trophic niche shift during ontogeny, whereby juveniles mainly consumed macrozooplankton while sub-adults and adults increasingly consumed aquatic insects and Tubificidae. The trophic niche of juveniles was similar between species in each of the 2 habitats but significantly different for sub-adults and adults, notably in littoral habitat. Moreover, the trophic niche was similar between habitats for juveniles of each species, whereas it differed significantly between habitats for sub-adults and adults. This study demonstrates the importance of ontogeny and shows that habitat use can significantly affect food resource use and trophic relationships between 2 co-occurring fish species.
关键词[WOS]: STOMACH CONTENTS ANALYSIS ; FEEDING STRATEGY ; LIFE-HISTORY ; FISH ; FOOD ; CHINA ; RIVER ; ZONE ; SIZE ; LAKE
语种: 英语
WOS记录号: WOS:000330614600003
ISSN号: 1864-7790
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20030
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 Toulouse 3, CNRS, ENFA, UMR5174 EDB Lab Evolut & Div Biol, F-31062 Toulouse, France
3.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Oceanog Trop, Guangzhou 510301, Guangdong, Peoples R China
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