Experimental studies of asymmetric competition among anurans

P. J. Morin, E. A. Johnson

Research output: Contribution to journalArticlepeer-review

95 Scopus citations

Abstract

Manipulation of the densities of larval Hyla crucifer and Rana sylvatica shows that they compete asymmetrically. The competitive superiority of R. sylvatica was correlated with its larger body size, faster growth, greater per capita competitive impact on conspecifics, and greater reduction in the availability of a trophic resource, periphyton. Experiments where Hyla tadpoles were grown in water conditioned by different densities and species of tadpoles provided no evidence that the observed asymmetric competition involves interference via growth inhibitors. Instead, the asymmetric interspecific competition is consistent with different impacts of species of intraspecific competition. -from Authors

Original languageEnglish (US)
Pages (from-to)398-407
Number of pages10
JournalOikos
Volume53
Issue number3
DOIs
StatePublished - 1988

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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