Optimal diet theory: when does it work, and when and why does it fail?

@article{Sih2001OptimalDT,
  title={Optimal diet theory: when does it work, and when and why does it fail?},
  author={Andrew Sih and Bent Christensen},
  journal={Animal Behaviour},
  year={2001},
  volume={61},
  pages={379-390}
}
Over the last three decades, many studies have attempted to explain forager diets by using optimal diet theory (ODT. [] Key Result Our major conclusion is that while ODT has generally worked well for foragers that feed on immobile prey, the theory often failed to predict the diets of foragers that attack mobile prey. We found only mixed support for the hypothesis that the theory works better when the study scenario more closely fits the assumptions of the model.
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References

SHOWING 1-10 OF 117 REFERENCES
The Role of Foraging Time Constraints and Variable Prey Encounter in Optimal Diet Choice
  • J. Lucas
  • Environmental Science
    The American Naturalist
  • 1983
TLDR
Optimal diet choice is analyzed by relaxing two sets of assumptions made in previous optimality models and it is shown that as variance in prey encounter rate increases, the time over which the forager estimates prey encounter rates will have a strong effect on the ability of the foragers to maximize the net rate of energy intake.
Interacting Effects of Predator and Prey Behavior in Determining Diets
TLDR
To explain non-random diets, behavioral ecologists have used optimal diet theory (ODT) which, in its simpler forms predicts diets based on the notion that predators choose prey types that result in maximum net energy intake.
Using Foraging Theory to Study Trophic Interactions
Foraging theory provides a potentially powerful tool for understanding the interaction between a predator population and its prey assemblage. We illustrate how foraging models developed for the…
Food Preference, Optimal Diet and Reproductive Output in Stoats Mustela Erminea in Sweden
TLDR
No consistent difference in reproductive success was found in the different food environments, but the highest reproductive output occurred in areas with relatively high water vole density.
Theory of Feeding Strategies
TLDR
Throughout, emphasis will be placed on strategic aspects of feeding rather than on what Holling (75) has called "tactics," and possible answers to the first problem may be given to the second problem.
On the Theory of Optimal Diets
  • H. Pulliam
  • Environmental Science
    The American Naturalist
  • 1974
TLDR
Using techniques of stochastic theory, a new aproach to predicting optimal diets is developed for a mobile predator feeding on stationary prey, predicting that an animal feeding according to the dictates of the optimal diet should show no partial preferences.
Integrative approaches to the study of predation : general thoughts and a case study on sunfish and salamander larvae
  • A. Sih
  • Biology, Environmental Science
  • 1992
TLDR
An integrative approach to study the responses of streamside salamanders, Ambystoma barbouri, to predatory sunfish and suggests that this species has actually evolved in the wrong direction with regard to this key "bad" behavior.
The Role of Time and Energy in Food Preference
  • J. Emlen
  • Economics
    The American Naturalist
  • 1966
TLDR
A model which relates optimal food preference relationships and caloric yield per unit time of potential food sources is derived and the terms pegmatype and pegmatypic mating are introduced to describe such mating preferences and such a mating system.
Diet optimization in a generalist herbivore: the moose.
  • G. Belovsky
  • Environmental Science
    Theoretical population biology
  • 1978
OPTIMAL FORAGING AND HABITAT SHIFT IN PERCH (PERCA FLUVIATILIS) IN A RESOURCE GRADIENT
TLDR
Habitat-dependent search rates may form a complementary explanation to learning and sampling behavior, for observed time lags and partial habitat use, in flexible predator search rates.
...
1
2
3
4
5
...