Oecologia

, Volume 87, Issue 4, pp 596–599

Evidence for secondary seed dispersal by rodents in Panama

  • Pierre-Michel Forget
  • Tarek Milleron
Short Communications

DOI: 10.1007/BF00320426

Cite this article as:
Forget, PM. & Milleron, T. Oecologia (1991) 87: 596. doi:10.1007/BF00320426

Summary

The data presented show thatVirola nobilis (Myristicaceae), a bird/mammal-dispersed tree species in Panama, may also be dispersed by a terrestrial rodent, the agouti (Dasyprocta punctata). Using a thread-marking method, we observed that agoutis scatterhoardedV. nobilis seeds that they found both singly or in clumps. Seed removal and seed burial rates were strongly affected by features of forest habitats, such asV. nobilis tree richness (rich vs poor) and/or forest age (old vs young), but not by seed dispersal treatment (scattered vs clumped). Predation (mostly post-dispersal) of unburied seeds by weevils was independent of habitat and dispersal treatment. Seeds artificially buried in aVirola-rich area were more likely to escape predation and become established than unburied seeds under natural conditions. The food reward for agoutis is in the germinating seedlings. The seed dispersal syndrome ofV. nobilis involves long- and short-distance dispersers which both appear important for tree recruitment.

Key words

Tropical ecology Panama Seed dispersal Rodents virola nobilis 

Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Pierre-Michel Forget
    • 1
  • Tarek Milleron
    • 1
  1. 1.Smithsonian Tropical Research InstituteBalboaRepublic of Panama
  2. 2.Laboratoire d'Ecologie GénéraleMuséum National d'Histoire NaturelleBrunoyFrance

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