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Hydrobiologia

, Volume 150, Issue 1, pp 25–31 | Cite as

Evidence for competition between mudsnails (Hydrodiidae): a field experiment

  • A. J. Cherrill
  • R. James
Article

Abstract

The paper describes an experimental investigation of competition between Hydrobia ulvae and H. ventrosa using enclosed populations at a site at which the species coexist naturally. lntraspecific competition is more intense than interspecific competition and may have a regulatory influence on snail densities. Other experimental studies of competition between mudsnails are reviewed and found to infer strongly the occurrence of competition in natural field populations. However, features of the species' field distributions previously attributed to interspecific competition can be more convincingly explained by other processes.

Keywords

Hydrobia enclosures competition distributions character displacement 

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Copyright information

© Dr W. Junk Publishers 1987

Authors and Affiliations

  • A. J. Cherrill
    • 1
  • R. James
    • 2
  1. 1.Department of ZoologyUniversity of LiverpoolLiverpoolEngland
  2. 2.School of Biological SciencesUniversity of East AngliaNorwich, NorfolkEngland

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