10.5061/DRYAD.HD301F6N
Galanthay, Theodore E.
University of Colorado Boulder
Flaxman, Samuel M.
University of Colorado Boulder
Data from: Generalized movement strategies for constrained consumers:
ignoring fitness can be adaptive
Dryad
dataset
2011
Ecology: evolutionary
Patch selection
2011-12-22T18:47:22Z
2011-12-22T18:47:22Z
en
https://doi.org/10.1086/664625
2129844 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Movements made by real organisms---such as movements involved in
dispersal, migration, and habitat selection---are expected to be
suboptimal occasionally due to realistic constraints imposed by incomplete
information, perceptual limitations, and stochasticity. Previous theory
considering such constraints has shown that movements appropriately
conditioned upon habitat or resource characteristics can balance out
suboptimal components of movement and thereby lead organisms to ideal free
distributions and fitness maxima, whereas movements conditioned upon
fitness differentials cannot. These findings suggest a somewhat
paradoxical hypothesis: even if organisms have information about their
fitness, movement strategies that maximize fitness may be conditioned upon
something other than fitness per se. We test this hypothesis by
investigating the evolutionary stability of generalized, conditional
movement strategies that vary in their use of information on fitness
versus information on habitat characteristics. We show that when costs of
sensory machinery are included, natural selection should favor movement
strategies that completely ignore fitness information. Finally, we
synthesize previous work by showing how several previous important
theoretical results on adaptive movement strategies are united under our
one general model.
FilesForDryadThis .zip file includes the Matlab computer code and some
simulation data used in the article. There is a readme.txt file which
lists the function and scripts. The code is well-documented and includes
specific information about each function.