Difference between revisions of "Forage"
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==Origin== | ==Origin== | ||
French ''fourrage'', Old French ''feurre fodder''. Common Romance ''fodro'', of Germanic origin: fodder -food in general. | French ''fourrage'', Old French ''feurre fodder''. Common Romance ''fodro'', of Germanic origin: fodder -food in general. | ||
| − | *[ | + | *[https://en.wikipedia.org/wiki/15th_century 15th Century] |
==Description== | ==Description== | ||
*1: to strip of provisions : collect forage from | *1: to strip of provisions : collect forage from | ||
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*4: to make a search : rummage | *4: to make a search : rummage | ||
==Description== | ==Description== | ||
| − | '''Foraging''' is the [[act]] of searching for [[food]]. As a field of [[study]], foraging theory is a branch of [ | + | '''Foraging''' is the [[act]] of searching for [[food]]. As a field of [[study]], foraging theory is a branch of [https://en.wikipedia.org/wiki/Behavioral_ecology behavioral ecology] that studies the foraging behavior of [[animals]] in [[response]] to the [[environment]] in which the animal lives. Foraging theory considers the foraging behavior of animals in reference to the payoff that an animal obtains from different foraging [[options]]. Foraging theory [[predicts]] that the foraging options that deliver the highest payoff should be [[favored]] by foraging animals because it will have the highest [[fitness]] payoff. More specifically, the highest [[ratio]] of energetic gain to cost while foraging. [[Human]] [[societies]] that subsist mainly by foraging wild [[plants]] and animals are known as [https://en.wikipedia.org/wiki/Hunter-gatherer hunter-gatherers]. |
| − | [ | + | [https://en.wikipedia.org/wiki/Optimal_foraging_theory Optimal foraging theory] was first proposed in 1966, in two papers published independently, by Robert MacArthur and Eric Pianka, and by J. Merritt Emlen. This [[theory]] [[argued]] that because of the key importance of successful foraging to an [[individual]]'s [[survival]], it should be possible to [[predict]] foraging behavior by using [https://en.wikipedia.org/wiki/Decision_theory decision theory] to determine the [[behavior]] that would be shown by an "optimal forager" - one with [[perfect]] [[knowledge]] of what to do to maximize usable [[food]] intake. While the behavior of real animals [[inevitably]] departs from that of the optimal forager, optimal foraging theory has proved very useful in [[developing]] [[hypotheses]] for describing real foraging behavior. Departures from optimality often help to identify constraints either in the animal's [[behavioral]] or [[cognitive]] repertoire, or in the [[environment]], that had not previously been [[suspected]]. With those constraints identified, foraging behavior often does approach the optimal pattern even if it is not [[identical]] to it. |
| − | There are many versions of [ | + | There are many versions of [https://en.wikipedia.org/wiki/Optimal_foraging_theory optimal foraging theory] that are relevant to different foraging situation. These include: |
*The optimal [[diet]] model, which [[describes]] the [[behavior]] of a forager that encounters different types of prey and must choose which to [[attack]] | *The optimal [[diet]] model, which [[describes]] the [[behavior]] of a forager that encounters different types of prey and must choose which to [[attack]] | ||
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*Central place foraging theory, which describes the behavior of a forager that must return to a particular place in order to consume its [[food]], or perhaps to hoard it or feed it to a [[mate]] or [[offspring]]. | *Central place foraging theory, which describes the behavior of a forager that must return to a particular place in order to consume its [[food]], or perhaps to hoard it or feed it to a [[mate]] or [[offspring]]. | ||
| − | In recent decades, optimal foraging theory has frequently been applied to the foraging behaviour of [[human]] [ | + | In recent decades, optimal foraging theory has frequently been applied to the foraging behaviour of [[human]] [https://en.wikipedia.org/wiki/Hunter-gatherer hunter-gatherers]. Although this is [[controversial]], coming under some of the same kinds of [[attack]] as the application of [https://en.wikipedia.org/wiki/Sociobiology socio-biological] theory to human behaviour, it does [[represent]] a [[convergence]] of [[ideas]] from [https://en.wikipedia.org/wiki/Human_ecology human ecology] and [https://en.wikipedia.org/wiki/Economic_anthropology economic anthropology] that has proved fruitful and interesting. |
[[Category: Biology]] | [[Category: Biology]] | ||
Latest revision as of 01:12, 13 December 2020
Origin
French fourrage, Old French feurre fodder. Common Romance fodro, of Germanic origin: fodder -food in general.
Description
- 1: to strip of provisions : collect forage from
- 2: to secure by foraging <foraged a chicken for the feast>
- intransitive verb
- 1: to wander in search of forage or food
- 2: to secure forage (as for horses) by stripping the country
- 3: ravage, raid
- 4: to make a search : rummage
Description
Foraging is the act of searching for food. As a field of study, foraging theory is a branch of behavioral ecology that studies the foraging behavior of animals in response to the environment in which the animal lives. Foraging theory considers the foraging behavior of animals in reference to the payoff that an animal obtains from different foraging options. Foraging theory predicts that the foraging options that deliver the highest payoff should be favored by foraging animals because it will have the highest fitness payoff. More specifically, the highest ratio of energetic gain to cost while foraging. Human societies that subsist mainly by foraging wild plants and animals are known as hunter-gatherers.
Optimal foraging theory was first proposed in 1966, in two papers published independently, by Robert MacArthur and Eric Pianka, and by J. Merritt Emlen. This theory argued that because of the key importance of successful foraging to an individual's survival, it should be possible to predict foraging behavior by using decision theory to determine the behavior that would be shown by an "optimal forager" - one with perfect knowledge of what to do to maximize usable food intake. While the behavior of real animals inevitably departs from that of the optimal forager, optimal foraging theory has proved very useful in developing hypotheses for describing real foraging behavior. Departures from optimality often help to identify constraints either in the animal's behavioral or cognitive repertoire, or in the environment, that had not previously been suspected. With those constraints identified, foraging behavior often does approach the optimal pattern even if it is not identical to it.
There are many versions of optimal foraging theory that are relevant to different foraging situation. These include:
- The optimal diet model, which describes the behavior of a forager that encounters different types of prey and must choose which to attack
- Patch selection theory, which describes the behavior of a forager whose prey is concentrated in small areas with a significant travel time between them
- Central place foraging theory, which describes the behavior of a forager that must return to a particular place in order to consume its food, or perhaps to hoard it or feed it to a mate or offspring.
In recent decades, optimal foraging theory has frequently been applied to the foraging behaviour of human hunter-gatherers. Although this is controversial, coming under some of the same kinds of attack as the application of socio-biological theory to human behaviour, it does represent a convergence of ideas from human ecology and economic anthropology that has proved fruitful and interesting.
