Pinning in the play fighting of rats: a comparative perspective with methodological recommendations

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dc.contributor.authorHimmler, Stephanie M.
dc.contributor.authorHimmler, Brett T.
dc.contributor.authorStryjek, Rafal
dc.contributor.authorModlinska, Klaudia
dc.contributor.authorPisula, Wojciech
dc.contributor.authorPellis, Sergio M.
dc.date.accessioned2019-12-09T22:11:05Z
dc.date.available2019-12-09T22:11:05Z
dc.date.issued2016
dc.descriptionOpen access article. Creative Commons Attribution 4.0 International LIcense (CC BY 4.0) appliesen_US
dc.description.abstractDuring 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.description.peer-reviewYesen_US
dc.identifier.citationHimmler, 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/2jm2z5wcen_US
dc.identifier.urihttps://hdl.handle.net/10133/5618
dc.language.isoen_USen_US
dc.publishereScholarship Publishing, University of Californiaen_US
dc.publisher.departmentDepartment of Neuroscienceen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.institutionPolish Academy of Scienceen_US
dc.publisher.institutionUniversity of Minnesota Medical Schoolen_US
dc.publisher.urlhttps://escholarship.org/uc/item/2jm2z5wc
dc.subjectPlay fighting in ratsen_US
dc.subjectPinningen_US
dc.subjectPin configurationen_US
dc.subjectDefensive actionen_US
dc.subjectPlayful attacken_US
dc.subject.lcshAnimals--Play behavior
dc.subject.lcshPlay behavior in animals
dc.subject.lcshRats--Behavior
dc.titlePinning in the play fighting of rats: a comparative perspective with methodological recommendationsen_US
dc.typeArticleen_US
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