title: Asymmetry in food handling behavior of a tree-dwelling rodent (Sciurus vulgaris).
abstract: Asymmetry in motor patterns is present in a wide variety of animals. Many lateralized behaviors seem to depend on brain asymmetry, as it is the case of different tasks associated to food handling by several bird and mammal species. Here, we analyzed asymmetry in handling behavior of pine cones by red squirrels (Sciurus vulgaris). Red squirrels devote most of their daily activity to feeding, thus this species constitutes an appropriate model for studying asymmetry in food processing. We aimed to explore 1) the potential lateralization in handling of pine cones by squirrels, 2) the dominant pattern for this behavior (left- vs. right-handed), and 3) whether this pattern varies among populations and depending on the pine tree species available. Results revealed that red squirrels handle pine cones in an asymmetrical way, and that direction of asymmetry varies among populations and seems to be determined more by local influences rather than by the pine tree species.
authors.affiliation: Department of Biology, Universidad Autónoma de Madrid, 28049, Madrid, Spain; Department of Biodiversity and Evolutionary Biology, Spanish National Museum of Natural History (CSIC), 28006, Madrid, Spain.
authors.forename: Nuria
authors.initials: N
authors.lastname: Polo-Cavia
authors.affiliation: Department of Biology, Universidad Autónoma de Madrid, 28049, Madrid, Spain.
authors.forename: Zoraida
authors.initials: Z
authors.lastname: Vázquez
authors.affiliation: Department of Biology, Universidad Autónoma de Madrid, 28049, Madrid, Spain.
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: de Miguel
mesh_terms: D000821:Animal Feed; D000818:Animals; D005247:Feeding Behavior; D005511:Food Handling; D012589:Sciuridae; D014197:Trees