No predatory bias with respect to colour familiarity for the aposematic Adelphobates galactonotus (Anura: Dendrobatidae)

Diana Patricia Rojas*, Adam Stow, Adolfo Amézquita, Pedro Ivo Simões, Albertina Pimentel Lima

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Aposematic colouration deters visually oriented predators because conspicuous signals are easier to detect and associate with unpalatability. Consequently, brightly coloured prey that are novel are predicted to be preyed on more than those with bright but typical colours. Here we evaluated whether predatory bias is associated with the colour differences observed at two different localities for a large, conspicuously coloured and poisonous Amazonian frog, Adelphobates galactonotus. At each locality predation experiments were carried out using frog models of two naturally occurring colours of the study species (blue and orange) and a control (brown). We found no evidence that novel colours were more vulnerable to predation than local colours. These results do not therefore support our hypothesis that predatory bias explains the geographic variation of colour in A. galactonotus.

Original languageEnglish
Pages (from-to)1637-1657
Number of pages21
JournalBehaviour
Volume152
Issue number12-13
DOIs
Publication statusPublished - 2015

Keywords

  • aposematism
  • poison frog
  • Adelphobates galactonotus
  • evolution
  • predation
  • colour variation

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