Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
What is the Optimal foraging theory?
|
The assumption that the foraging behaviors of individuals are optimal by maximizing the rate of energy gained per unit time.
|
|
|
Who are Energy maximizers?
|
An individual that maximizes the rate of energy gained per unit time by choosing prey (or patches) with the highest net energy gain (Eg – Eh).
|
|
|
Who are Time Minimizers?
|
An individual that maximizes the rate of energy gained per unit time by choosing prey (or patches) with the lowest time required (Ts + Th).
|
|
|
What is the Optimal diet theorem?
|
A rate-maximizing forager will include less profitable prey items into their diet until the sum of rate of energy gain no longer increases from the addition of the next most profitable prey type.
|
|
|
What is the Marginal value theorem?
|
A rate-maximizing forager will choose the residence time for each patch type so that the marginal rate of gain at the time of leaving equals the long term average rate of energy intake in the habitat.
|
|
|
What is Give-up density?
|
Density of prey in a patch at the time of leaving as predicted by the marginal value theorem.
|
|
|
What is an Information center?
|
A communal roosting or nesting location where social animals gather and can exchange information regarding the location of scarce and widely dispersed resources.
|
|
|
What is "Public information"?
|
A type of social information that is vicariously acquired that conveys information regarding the location and quality of a particular resource.
|
|
|
What is a Search image?
|
As foragers (or predators) encounter potential food items (or prey), they develop an enhanced ability to recognize those items in the future when they are foraging (or hunting).
|
|
|
What is the Dilution effect?
|
Safety in numbers that comes from swamping the ability of local predators to consume prey.
|
|
|
Describe the Many eyes hypothesis.
|
Safety in numbers that comes from an increased probability of detecting a predator’s approach by a group of vigilant prey.
|
