A1 Refereed original research article in a scientific journal
Evolution of foraging strategies on resource gradients
Authors: Heino M, Parvinen K, Dieckmann U
Publisher: EVOLUTIONARY ECOLOGY LTD
Publication year: 2008
Journal: Evolutionary Ecology Research
Journal name in source: EVOLUTIONARY ECOLOGY RESEARCH
Journal acronym: EVOL ECOL RES
Volume: 10
Issue: 8
First page : 1131
Last page: 1156
Number of pages: 26
ISSN: 1522-0613
Abstract
Results: (1) When expressed its instantaneous rates with the same units (time(-1)), mortality risks (d), foraging costs (c), and resource qualities (q) all influence the evolutionarily stable distribution of foraging effort through the dimensionless expression (d + c)/q. (2) Functional responses that imply intake saturation may result in a subset of resources remaining entirely unused. (3) Coupling foraging to resource dynamics results in a rich array of evolutionary outcomes, depending on the type of competition among foragers and the interplay between forager and resource characteristics. (4) Genetic constraints may cause foraging effort to track the resource gradient more coarsely than classical models predict.
Results: (1) When expressed its instantaneous rates with the same units (time(-1)), mortality risks (d), foraging costs (c), and resource qualities (q) all influence the evolutionarily stable distribution of foraging effort through the dimensionless expression (d + c)/q. (2) Functional responses that imply intake saturation may result in a subset of resources remaining entirely unused. (3) Coupling foraging to resource dynamics results in a rich array of evolutionary outcomes, depending on the type of competition among foragers and the interplay between forager and resource characteristics. (4) Genetic constraints may cause foraging effort to track the resource gradient more coarsely than classical models predict.
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