Social modulation of the daily activity rhythm in a solitary subterranean rodent, the tuco-tuco (Ctenomys sp)

Author(s)

Tomotani, Barbara Mizumo ; Amaya, Juan Pablo ; Oda, Gisele Akemi ; Valentinuzzi, Veronica Sandra

• Document type: Journal article
• Source: SLEEP SCIENCE; v. 9, n. 4, p. 5-pg., 2016-10-01.

Abstract

South American subterranean rodents are mainly described as solitary and mutual synchronization was never observed among individuals maintained together in laboratory. We report that a single birth event was capable of disrupting the robust nocturnal activity rhythm of singly housed tuco-tucos from north-west Argentina. "Around-the-clock activity" was displayed by 8 out of 13 animals whose cages were closer to the newborn pups. However, experimental exposure to a pup vocalization did not produce a similar effect on the rhythms of adult animals. Our results indicate an effect of social interaction in the expression of biological rhythms even in solitary animals. (AU)

• FAPESP's process: 10/50222-1 - Daily core body temperature rhythms in subterranean rodents (Ctenomys knigthi)
• Grantee: Gisele Akemi Oda
• Support Opportunities: Regular Research Grants