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dc.contributor.author Himmler, Stephanie M.
dc.contributor.author Himmler, Brett T.
dc.contributor.author Stryjek, Rafal
dc.contributor.author Modlinska, Klaudia
dc.contributor.author Pisula, Wojciech
dc.contributor.author Pellis, Sergio M.
dc.date.accessioned 2019-12-09T22:11:05Z
dc.date.available 2019-12-09T22:11:05Z
dc.date.issued 2016
dc.identifier.citation Himmler, S. M., Himmler, B. T., Stryjek, R., Modlinska, K., Pisula, W., & Pellis, S. M. (2016). Pinning in the play fighting of rats: A comparative perspective with methodological recommendations. International Journal of Comparative Psychology, 29. https://escholarship.org/uc/item/2jm2z5wc en_US
dc.identifier.uri https://hdl.handle.net/10133/5618
dc.description Open access article. Creative Commons Attribution 4.0 International LIcense (CC BY 4.0) applies en_US
dc.description.abstract During play fighting, rats attack and defend the nape of the neck and during the course of this competitive interaction, they may adopt a configuration in which one animal stands over its supine partner (i.e., pin). Because the pin configuration is typically frequent and relatively easy to identify, it has been widely used as a marker to detect the effects of experimental treatments. In the present study, the frequency of pinning during standardized, 10-min trials in three strains of rats, Long Evans hooded (LE), Sprague-Dawley (SD) and wild (WWCPS), was compared. LE and SD had higher rates than WWCPS rats (#/min: 6.5, 5.5, 1.5, respectively). When adjusted for strain differences in the frequency of attacks, SD as well as WWCPS rats had lower rates of pinning compared to LE rats. Both SD and WWCPS rats were less likely to use tactics of defense that promote pinning. Moreover, while the majority of the pins achieved in LE rats arose from the defender actively rolling over onto its back, the majority of pins in WWCPS rats arose because one partner pushed the other onto its back. SD rats were intermediate in this regard. Finally, once they do adopt the pin configuration, SD rats are less likely to remain supine than LE and WWCPS rats. That is, both SD and WWCPS rats have significantly fewer pins than LE rats, but a different combination of factors account for this. These data highlight the need to use a battery of measures for ascertaining the effects of experimental manipulations on play. Some suggested guidelines are provided. en_US
dc.language.iso en_US en_US
dc.publisher eScholarship Publishing, University of California en_US
dc.subject Play fighting in rats en_US
dc.subject Pinning en_US
dc.subject Pin configuration en_US
dc.subject Defensive action en_US
dc.subject Playful attack en_US
dc.subject.lcsh Animals--Play behavior
dc.subject.lcsh Play behavior in animals
dc.subject.lcsh Rats--Behavior
dc.title Pinning in the play fighting of rats: a comparative perspective with methodological recommendations en_US
dc.type Article en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Neuroscience en_US
dc.description.peer-review Yes en_US
dc.publisher.institution University of Lethbridge en_US
dc.publisher.institution Polish Academy of Science en_US
dc.publisher.institution University of Minnesota Medical School en_US
dc.publisher.url https://escholarship.org/uc/item/2jm2z5wc


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