Evolution of predator dispersal in relation to spatio-temporal prey dynamics: how not to get stuck in the wrong place!

Justin M J Travis, Stephen C F Palmer, Steven Coyne, Alexandre Millon, Xavier Lambin

Research output: Contribution to journalArticle

10 Citations (Scopus)
6 Downloads (Pure)

Abstract

The eco-evolutionary dynamics of dispersal are recognised as key in determining the responses of populations to environmental changes. Here, by developing a novel modelling approach, we show that predators are likely to have evolved to emigrate more often and become more selective over their destination patch when their prey species exhibit spatio-temporally complex dynamics. We additionally demonstrate that the cost of dispersal can vary substantially across space and time. Perhaps as a consequence of current environmental change, many key prey species are currently exhibiting major shifts in their spatio-temporal dynamics. By exploring similar shifts in silico, we predict that predator populations will be most vulnerable when prey dynamics shift from stable to complex. The more sophisticated dispersal rules, and greater variance therein, that evolve under complex dynamics will enable persistence across a broader range of prey dynamics than the rules which evolve under relatively stable prey conditions.

Original languageEnglish
Article numbere54453
Number of pages9
JournalPloS ONE
Volume8
Issue number2
DOIs
Publication statusPublished - 11 Feb 2013

Keywords

  • distance
  • conditional dispersal
  • dependent dispersal
  • traveling-waves
  • cyclic populations
  • field voles
  • microtus-agrestis
  • environments
  • spatially-structured populations
  • emigration

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