A mechanistic model for partial preferences
Authored by L Berec, V Krivan
Date Published: 2000
DOI: 10.1006/tpbi.2000.1491
Sponsors:
United States National Science Foundation (NSF)
Platforms:
No platforms listed
Model Documentation:
Other Narrative
Mathematical description
Model Code URLs:
Model code not found
Abstract
Classic prey optimal foraging model assumes that individual predators
are globally omniscient; that is, they have exact knowledge of prey
population densities in the environment. This study examines a spatially
explicit individual-based model of a one-predator two-prey system where
individual predators are assumed to be omniscient only locally, i.e., to
know prey population densities only in the range of their perception.
Due to local variations in prey numbers, the probability of acceptance
of less profitable prey shifts from the zero-one rule to a gradually
decreasing function, for which an explicit formula is derived, giving
way to partial preferences. A corresponding predator functional response
to mo re profitable prey is shown to have a sigmoid-like form. (C) 2000
Academic Press.
Tags
Strategy
mobility
Choice
Diet
Foraging behavior
Predator-prey dynamics
Field
Size selection