Visual marking in mammals first proved by manipulations of brown bear tree debarking

• Published in: Scientific Reports
• Main Authors: Penteriani, Vincenzo, González-Bernardo, Enrique, Hartasánchez, Alfonso, Ruiz-Villar, Héctor, Morales-González, Ana, Ordiz, Andrés, Bombieri, Giulia, Díaz García, Juan, Cañedo, David, Bettega, Chiara, Delgado, María del Mar
• Format: Article in Journal/Newspaper
• Language: English
• Published: Nature Publishing Group 2021
• Subjects: Ursus arctos
• Online Access: http://hdl.handle.net/10261/240987; https://doi.org/10.1038/s41598-021-88472-5

The rather limited human ability to understand animal vision and visual signalling has frequently clouded our expectations concerning the visual abilities of other animals. But there are multiple reasons to suspect that visual signalling is more widely employed by animals than previously thought. Because visibility of visual marks depends on the background in which they are seen, species spending most of their time living in dark conditions (e.g., in forests and/or having crepuscular and nocturnal habits) may rely on bright signals to enhance visual display. Here, as a result of experimental manipulations, we present, for the frst time ever, evidence supporting the use of a new channel of intraspecifc communication by a mammal species, i.e., brown bear Ursus arctos adult males relying on visual marks during mating. Bear reactions to our manipulation suggest that visual signalling could represent a widely overlooked mechanism in mammal communication, which may be more broadly employed than was previously thought Peer reviewed