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vol.57 número3Is the red spotted green frog Hypsiboas punctatus (Anura: Hylidae) selecting its preys?: The importance of prey availabilitySeed predation by mammals in forest fragments in Monteverde, Costa Rica índice de autoresíndice de materiabúsqueda de artículos
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Revista de Biología Tropical

versión On-line ISSN 0034-7744versión impresa ISSN 0034-7744


STEFFEN, John E. Perch-height specific predation on tropical lizard clay models: implications for habitat selection in mainland neotropical lizards. Rev. biol. trop [online]. 2009, vol.57, n.3, pp.859-864. ISSN 0034-7744.

Predation has been hypothesized to be a strong selective force structuring communities of tropical lizards. Comparisons of perch height and size-based predation frequencies can provide a unique window into understanding how predation might shape habitat selection and morphological patterns in lizards, especially anoles. Here i use plasticine clay models, placed on the trunks of trees and suspended in the canopy to show that predation frequency on clay models differs primarily according to habitat (canopy vs. trunk-ground), but not according to size. These data are discussed in light of observed lizard abundances in the lowland forests of Costa Rica, and are presented as partial explanation for why fewer lizards are found in tree canopies, and more lizards are found on ground-trunk habitats. Rev. Biol. Trop. 57 (3): 859-864. Epub 2009 September 30.

Palabras clave : canopy; clay model; lizard; predation; tree trunk.

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