Limnology

, Volume 12, Issue 2, pp 151–155

Isotopic niche overlap of two planktivorous fish in southern China

  • Gang Chen
  • Zaohe Wu
  • Binhe Gu
  • Dongyan Liu
  • Xin Li
  • Yang Wang
Research paper

DOI: 10.1007/s10201-010-0332-2

Cite this article as:
Chen, G., Wu, Z., Gu, B. et al. Limnology (2011) 12: 151. doi:10.1007/s10201-010-0332-2

Abstract

The purpose of this study was to assess if there was trophic niche overlap of silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) in four large freshwater ecosystems from southern China using stable carbon and nitrogen isotopes (δ13C and δ15N). Multivariate analysis of variance (MANOVA) on the δ13C and δ15N values measured from muscle tissue indicates trophic niche overlap in one unproductive and one highly productive large system and trophic niche segregation in two systems with moderate watershed size and productivity. For these two coexisting planktivorous fish, which were hitherto believed to occupy different trophic niches, this study demonstrated that the degree of their trophic niche overlap varied according to ecosystem properties.

Keywords

Bighead carp Silver carp Stable isotope analysis Trophic niche overlap 

Copyright information

© The Japanese Society of Limnology 2010

Authors and Affiliations

  • Gang Chen
    • 1
  • Zaohe Wu
    • 1
  • Binhe Gu
    • 1
    • 4
  • Dongyan Liu
    • 2
  • Xin Li
    • 3
  • Yang Wang
    • 3
  1. 1.Fishery CollegeGuangdong Ocean UniversityZhanjiangChina
  2. 2.Department of Environmental Science, Urban Ecology and Environment Research CenterShanghai Normal UniversityShanghaiChina
  3. 3.Department of Geological SciencesFlorida State University, National High Magnetic Field LaboratoryTallahasseeUSA
  4. 4.Everglades DivisionSouth Florida Water Management DistrictWest Palm BeachUSA

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