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Article
Reduced Competition and Altered Feeding Behavior Among Marine Snails After a Mass Extinction
Science
  • Gregory P. Dietl, University of North Carolina
  • Gregory S. Herbert, University of California, Davis
  • Geerat J. Vermeij, University of California, Davis
Document Type
Article
Publication Date
12-1-2004
Digital Object Identifier (DOI)
https://doi.org/10.1126/science.1106182
Disciplines
Abstract

Extinction may alter competitive interactions among surviving species, affecting their subsequent recovery and evolution, but these processes remain poorly understood. Analysis of predation traces produced by shell-drilling muricid snails on bivalve prey reveals that species interactions were substantially different before and after a Plio-Pleistocene mass extinction in the western Atlantic. Muricids edge- and wall-drilled their prey in the Pliocene, but Pleistocene and Recent snails attacked prey only through the shell wall. Experiments with living animals suggest that intense competition induces muricid snails to attack shell edges. Pliocene predators, therefore, probably competed for resources more intensely than their post-extinction counterparts.

Citation / Publisher Attribution

Science, v. 306, issue 5705, p. 2229-2231

Citation Information
Gregory P. Dietl, Gregory S. Herbert and Geerat J. Vermeij. "Reduced Competition and Altered Feeding Behavior Among Marine Snails After a Mass Extinction" Science Vol. 306 Iss. 5705 (2004) p. 2229 - 2231
Available at: http://works.bepress.com/gregory-herbert/28/