Latest News Latest News

Las altas temperaturas están provocando que las lagunas y las marismas de Doñana pierdan agua rápidamente

La superficie inundada en la marisma es de un 78% pero la profundidad es escasa. Por otra parte, sólo el 1,9% de las lagunas temporales están inundadas. Las precipitaciones crean una oportunidad...

Traffic noise causes lifelong harm to baby birds

A study with CSIC participation reveals for the first time that car noise harms individuals throughout their lifetime even years after exposure

Illegal wildlife trade, a serious problem for biodiversity and human health

A research team led by the Doñana BIological Station and the University Pablo de Olavide have detected wild-caught pets in 95% of the localities in the Neotropic and warns of the risk of zoonotic...

Urbanization and loss of woody vegetation are changing key traits of arthropod communities

Urbanization is favouring smaller beetle species and larger spider species with greater dispersal capacity.

The loss of woody areas is linked to a decline in the duration of the activity...

Asset Publisher Asset Publisher

Back

Why brown bears have smelly feet

Why brown bears have smelly feet

Most mammals rely upon scent for intraspecific communication. As most bear species have large home ranges and are non-territorial, scent deposit while walking could be an effective way to communicate with conspecifics. Here, the existence of pedal glands in brown bears and their role in chemical communication are investigated from a histological, biochemical and behavioural perspective. Eccrine glands were found in footpads, and prominent apocrine and sebaceous glands in the interdigital, metacarpal and metatarsal skin sections. Pedal scent contained 26 compounds including carboxylic acids, important constituents of mammalian secretions. Six of these compounds were exclusive for males. Finally, a specific marking gait like a "dance" recorded in the field is described, mostly performed by males. This study supports the existence of chemical communication through pedal marking in brown bears and suggests sex-coding potential of pedal scent.. información[at]ebd.csic.es: Sergiel et al (2017) Histological, chemical and behavioral evidence of pedal communication in brown bears. Sci Rep 7: 1052 doi:10.1038/s41598-017-01136-1


https://www.nature.com/articles/s41598-017-01136-1