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The interplay between multiple predators and prey colour divergence

Willink, Beatriz LU ; Garcia-Rodriguez, Adrian; Bolanos, Federico and Proehl, Heike (2014) In Biological Journal of the Linnean Society 113(2). p.580-589
Abstract
Evolutionary divergence in the coloration of toxic prey is expected when geographic variation in predator composition and behavior favours shifts in prey conspicuousness. A fundamental prediction of predator-driven colour divergence is that the local coloration should experience lower predation risk than novel prey phenotypes. The dorsal coloration of the granular poison frog varies gradually from populations of conspicuous bright red frogs to populations of dull green and relatively cryptic frogs. We conducted experiments with clay models in four populations to examine the geographic patterns of taxon-specific predation. Birds avoided the local phenotype while lizards consistently selected for decreased conspicuousness and crab predation... (More)
Evolutionary divergence in the coloration of toxic prey is expected when geographic variation in predator composition and behavior favours shifts in prey conspicuousness. A fundamental prediction of predator-driven colour divergence is that the local coloration should experience lower predation risk than novel prey phenotypes. The dorsal coloration of the granular poison frog varies gradually from populations of conspicuous bright red frogs to populations of dull green and relatively cryptic frogs. We conducted experiments with clay models in four populations to examine the geographic patterns of taxon-specific predation. Birds avoided the local phenotype while lizards consistently selected for decreased conspicuousness and crab predation did not depend on frog coloration. Importantly, birds and lizards favoured low conspicuousness in populations where relatively cryptic green morphs have evolved. This study provides evidence for the interplay among distinct selective pressures, from multiple-predator taxa, acting on the divergence in protective coloration of prey species.(c) 2014 The Linnean Society of London, Biological Journal of the Linnean Society, 2014, 113, 580-589. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
aposematism, crypsis, Dendrobatidae, natural selection, phenotypic, divergence, predation
in
Biological Journal of the Linnean Society
volume
113
issue
2
pages
580 - 589
publisher
Linnean Society of London
external identifiers
  • wos:000342613900020
  • scopus:85027925043
ISSN
0024-4066
DOI
10.1111/bij.12355
language
English
LU publication?
yes
id
0c9120ba-1c61-452f-bd2e-fe5444f4a193 (old id 4803410)
date added to LUP
2014-12-01 09:07:55
date last changed
2017-10-22 03:17:49
@article{0c9120ba-1c61-452f-bd2e-fe5444f4a193,
  abstract     = {Evolutionary divergence in the coloration of toxic prey is expected when geographic variation in predator composition and behavior favours shifts in prey conspicuousness. A fundamental prediction of predator-driven colour divergence is that the local coloration should experience lower predation risk than novel prey phenotypes. The dorsal coloration of the granular poison frog varies gradually from populations of conspicuous bright red frogs to populations of dull green and relatively cryptic frogs. We conducted experiments with clay models in four populations to examine the geographic patterns of taxon-specific predation. Birds avoided the local phenotype while lizards consistently selected for decreased conspicuousness and crab predation did not depend on frog coloration. Importantly, birds and lizards favoured low conspicuousness in populations where relatively cryptic green morphs have evolved. This study provides evidence for the interplay among distinct selective pressures, from multiple-predator taxa, acting on the divergence in protective coloration of prey species.(c) 2014 The Linnean Society of London, Biological Journal of the Linnean Society, 2014, 113, 580-589.},
  author       = {Willink, Beatriz and Garcia-Rodriguez, Adrian and Bolanos, Federico and Proehl, Heike},
  issn         = {0024-4066},
  keyword      = {aposematism,crypsis,Dendrobatidae,natural selection,phenotypic,divergence,predation},
  language     = {eng},
  number       = {2},
  pages        = {580--589},
  publisher    = {Linnean Society of London},
  series       = {Biological Journal of the Linnean Society},
  title        = {The interplay between multiple predators and prey colour divergence},
  url          = {http://dx.doi.org/10.1111/bij.12355},
  volume       = {113},
  year         = {2014},
}