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Animal Cognition

, Volume 22, Issue 6, pp 1027–1037 | Cite as

Pair foraging degrades socially transmitted food preferences in rats

  • Chelsey C. DamphousseEmail author
  • Diano F. Marrone
  • Noam Miller
Original Paper

Abstract

Following presentation of a novel food odor on the breath of a conspecific, naïve rats will exhibit a preference for that food, a form of learning called social transmission of food preference (STFP). When tested in isolation, STFPs are robust, persisting for up to a month and overcoming prior aversions. This testing protocol, however, does not account for rats’ ecology. Rats and other rodents forage in small groups, rather than alone. We allowed rats to forage in pairs and found that, following social foraging, they no longer displayed a food preference, i.e., that STFPs degrade during social foraging. Non-foraging rats exposed to the same foods for the same amount of time in isolation maintained their preferences. We also examined whether individual differences between rats affect STFP. Neither boldness nor sociability predicted initial STFP strength, but bolder rats’ preferences degraded more following social foraging. Shyer rats were more likely to eat at the same time as their partner. By tracking rats’ interactions during social foraging, we show that they use complex rules to combine their own preferences with socially acquired information about foods in their environment. These results situate STFP within the behavioral ecology of foraging and suggest that individual traits and the interactions between them modulate how social learning is maintained, modified, or lost.

Keywords

Social transmission of food preference (STFP) Foraging Behavioral syndromes Information sharing Exploration Rat 

Notes

Acknowledgements

We thank Eden Kleinhandler, Mackenzie Schultz, and members of the Collective Cognition Lab for assistance in running the experiment, David White for helpful comments and discussion, and Kelley Putzu for animal care.

Author contributions

All authors designed the experiment. CD ran the experiment, CD and NM analyzed the data, and all authors wrote the manuscript.

Funding

This work was supported by a National Science and Engineering Research Council of Canada (NSERC) Grant No. RGPIN-2016-06138 (to NM).

Compliance and ethical standards

Conflict of interest

Chelsey C. Damphousse declares that she has no conflict of interest. Diano F. Marrone declares that he has no conflict of interest. Noam Miller declares that he has no conflict of interest.

Statement on welfare of animals

All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. The procedures used followed the Canadian Council on Animal Care guidelines and were approved by the Wilfrid Laurier University Animal Care Committee.

Supplementary material

10071_2019_1294_MOESM1_ESM.pdf (364 kb)
Supplementary material 1 (PDF 363 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of PsychologyWilfrid Laurier UniversityWaterlooCanada

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