Journal Article10.1146/ANNUREV.ES.15.110184.002515
Optimal Foraging Theory: A Critical Review
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TL;DR: It follows that the proportion of individuals in a population foraging in ways that enhance their fitness will tend to increase over time, and the average foraging behavior will increasingly come to be characterized by those characteristics that enhance individual fitness.
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Abstract: Proponents of optimal foraging theory attempt to predict the behavior of animals while they are foraging; this theory is based on a number of assump tions ( 133 , 155 , 2 10, 23 1 ) . First, an individual's contribution to the next generation (i.e. its "fitness") depends on its behavior while foraging. This contribution may be measured genetically or culturally as the proportion of an individual's genes or "ideas", respectively, in the next generation. In the former case, the theory is simply an extension of Darwin's theory of evolution. Second, it is assumed that there should be a heritable component of foraging behavior, i.e. an animal that forages in a particular manner should be likely to have offspring that tend to forage in the same manner. This heritable compo nent can be either the actual foraging responses made by an animal or the rules by which an animal learns to make such responses. In other words, optimal foraging theory may apply regardless of whether the foraging behavior is learned or innate. Given these first two assumptions, it follows that the proportion of individuals in a population foraging in ways that enhance their fitness will tend to increase over time. Unless countervailed by sufficiently strong group selection (see 287, 242), foraging behavior will therefore evolve, and the average foraging behavior will increasingly come to be characterized by those characteristics that enhance individual fitness. The third assumption is that the relationship between foraging behavior and fitness is known. This relationship is usually referred to as the currency of fitness (23 1 ) . In general, any such currency will include a time scale, although in some cases it may be assumed that fitness is a function of some rate.
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References
On optimal diet in a patchy environment.
TL;DR: Results obtained by simulation show that deviations from recent predictions are to be expected, particularly for long interpatch travel times and rapid depletion of profitable prey types.
85
Central place foraging: Single-prey loaders again
C. M. Lessells,David W. Stephens +1 more
TL;DR: In this article, the authors present the correct form of the graphical solution and discuss one of its implications, which is that Orians & Pearson made a mistake in the formulation of the single-preyloader model.
82
The Fallacy of the Averages in Ecological Optimization Theory
TL;DR: Optimization theory is commonly applied to a great many ecological problems, but a greatMany authors do not do what they state they do because of an improper use of the expectation operator from probability theory.
81
Food selection of the field vole Microtus agrestis
TL;DR: A model on food selection in grazing microtine rodents shows close agreement between predictions and observations and nutritional consequences of food selection for energy-per-effort as well as consequences at the population level of organization are evaluated.
78
Food preference as a function of resource abundance with multiple prey types: an experimental analysis of optimal foraging theory
TL;DR: A scenario which proposes that feeding habits may influence the way a consumer optimizes its foraging behavior is presented, and it is suggested that natural selection should favor consumers that select high value items and do not generalize on a type's average values.
77