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Sex differences in patch-leaving foraging decisions in rats.

Marissa Garcia1, Sukriti Gupta1, Andrew M Wikenheiser1,2

  • 1Department of Psychology, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Oxford Open Neuroscience
|April 10, 2024
PubMed
Summary
This summary is machine-generated.

Rats exhibit foraging behavior, often staying too long in food patches. Male rats showed a stronger tendency for prolonged patch residence, with movement differences only partially explaining sex-based foraging decisions.

Keywords:
decision makingforagingmarginal value theorempatch

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Area of Science:

  • Animal behavior
  • Neuroscience
  • Decision-making

Background:

  • Foraging behavior is crucial for animal survival and decision-making.
  • Naturalistic foraging tasks provide insights into complex cognitive processes.
  • Understanding decision-making in animals informs ecological and evolutionary studies.

Purpose of the Study:

  • To investigate spatial patch-foraging decisions in rats.
  • To examine how the cost of searching for new patches influences foraging behavior.
  • To identify potential sex differences in foraging strategies and decision-making.

Main Methods:

  • Developed a spatial patch-foraging task for Long-Evans rats.
  • Manipulated the cost of seeking new foraging locations.
  • Recorded patch residence times and locomotion patterns.

Main Results:

  • Rats generally followed theoretical foraging models but tended to over-persist in patches.
  • Male rats exhibited a stronger tendency for prolonged patch residence compared to females.
  • Sex differences in locomotion were observed but only partially explained differences in patch duration.

Conclusions:

  • Foraging decisions are influenced by a complex interplay of factors, including patch value and search costs.
  • Sex differences exist in foraging persistence, with males showing greater tendency to over-persist.
  • Locomotion and sex are nuanced factors affecting foraging decisions in rats.