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Stable isotope changes in freshwater shrimps (Exopalaemon modestus and Macrobrachium nipponensis): trophic pattern implications
Xu, Jun1; Zhang, Min2; Xie, Ping1,2; Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Hubei, Peoples R China
2008-06-01
Source PublicationHYDROBIOLOGIA
ISSN0018-8158
Volume605Pages:45-54
AbstractTrophic patterns of omnivorous freshwater shrimps, Exopalaemon modestus and Macrobrachium nipponensis, were investigated in two shallow eutrophic lakes by using stable isotope analysis. delta N-15 and delta C-13 of M. nipponensis and E. modestus increased with increasing body weight, which might be attributed to larger individuals ingesting organisms that feed higher up the food chain and/or increased assimilation of benthic food items with enriched isotopic signatures. Of the freshwater shrimps occurring in the studied lakes, those from Lake Taihu had significantly elevated delta N-15 and delta C-13 values (4.3% and 1.8%, respectively) compared with those from the less eutrophic Lake Chaohu, indicating that the isotopic signature might partially reflect the trophic states of their habitats. Mixing model results suggested that the benthic food web provides the primary carbon source for both shrimp species, and that E. modestus assimilated relatively more pelagic food sources than M. nipponensis in these lakes.; Trophic patterns of omnivorous freshwater shrimps, Exopalaemon modestus and Macrobrachium nipponensis, were investigated in two shallow eutrophic lakes by using stable isotope analysis. delta N-15 and delta C-13 of M. nipponensis and E. modestus increased with increasing body weight, which might be attributed to larger individuals ingesting organisms that feed higher up the food chain and/or increased assimilation of benthic food items with enriched isotopic signatures. Of the freshwater shrimps occurring in the studied lakes, those from Lake Taihu had significantly elevated delta N-15 and delta C-13 values (4.3% and 1.8%, respectively) compared with those from the less eutrophic Lake Chaohu, indicating that the isotopic signature might partially reflect the trophic states of their habitats. Mixing model results suggested that the benthic food web provides the primary carbon source for both shrimp species, and that E. modestus assimilated relatively more pelagic food sources than M. nipponensis in these lakes.
SubtypeArticle
KeywordExopalaemon Modestus Food Web Linking Freshwater Shrimps Macrobrachium Nipponensis Stable Isotopes
Department[Xu, Jun; Xie, Ping] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Hubei, Peoples R China; [Zhang, Min; Xie, Ping] Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
Subject AreaMarine & Freshwater Biology
DOI10.1007/s10750-008-9299-y
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000254750900006
WOS KeywordPELAGIC FOOD WEBS ; EUTROPHIC LAKE ; DELTA-N-15 ; CARBON ; DELTA-C-13 ; DECAPODA ; INVERTEBRATES ; PALAEMONIDAE ; ENRICHMENT ; POSITION
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8182
Collection期刊论文
Corresponding AuthorXie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Hubei, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Hubei, Peoples R China
2.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
Recommended Citation
GB/T 7714
Xu, Jun,Zhang, Min,Xie, Ping,et al. Stable isotope changes in freshwater shrimps (Exopalaemon modestus and Macrobrachium nipponensis): trophic pattern implications[J]. HYDROBIOLOGIA,2008,605:45-54.
APA Xu, Jun,Zhang, Min,Xie, Ping,&Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Hubei, Peoples R China.(2008).Stable isotope changes in freshwater shrimps (Exopalaemon modestus and Macrobrachium nipponensis): trophic pattern implications.HYDROBIOLOGIA,605,45-54.
MLA Xu, Jun,et al."Stable isotope changes in freshwater shrimps (Exopalaemon modestus and Macrobrachium nipponensis): trophic pattern implications".HYDROBIOLOGIA 605(2008):45-54.
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