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Introducing intermittent rest into a forager's random walk dynamics can significantly extend its lifetime. This strategy proves beneficial for survival, especially when food is scarce, altering typical diffusion patterns.

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Area of Science:

  • Statistical Physics
  • Mathematical Biology
  • Ecology

Background:

  • Foraging behavior is crucial for survival in many species.
  • Random walk models are used to simulate movement patterns.
  • Resource depletion and limited survival times are key challenges for foragers.

Purpose of the Study:

  • To investigate the impact of intermittent rest on forager survival and movement.
  • To analyze how the probability of resting affects forager lifetime and behavior.
  • To explore deviations from standard diffusive behavior in foraging models.

Main Methods:

  • Simulations of a forager performing a random walk on lattices.
  • Introduction of an intermittent rest parameter (p) upon food consumption.
  • Analytical treatment in one dimension for comparison with simulations.

Main Results:

  • Intermittent rest significantly influences forager lifetime, with optimal benefits for specific parameter values.
  • Observed interesting scaling behaviors with respect to the resting probability (p).
  • Identified departures from usual diffusive behavior for resting probabilities between 0.5 and 1.

Conclusions:

  • Intermittent rest is a critical factor that can enhance forager survival strategies.
  • The probability of resting (p) modulates foraging efficiency and movement patterns.
  • The model provides insights into non-standard diffusive dynamics in biological systems.