Check out Smithsonian Magazine’s recent article about geladas.
Filed under: Fieldwork, Primatology | Tagged: geladas, magazine, popular press | 1 Comment »
Badge of status in drills (Mandrillus leucophaeus)
Posted on November 13, 2009 by Beast Ape
The upcoming special issue of International Journal of Primatology includes a number of interesting articles on the function of primate coloration in species such as geladas (Theropithecus gelada) (Bergman et al., in press), drills (Mandrillus leucophaeus) (Marty et al., in press), mandrills (M. sphinx) (Setchell et al., in press), and red-fronted lemurs (Eulemur fulvus rufus) [...]
Filed under: Animal Behavior, Biology, Primatology | Tagged: coloration, sexual selection, badge of status, female choice, drill, Mandrillus leucophaeus | 1 Comment »
Contagious yawning in geladas
Posted on November 7, 2009 by Beast Ape
Yawning is a common phenomenon among vertebrates. Despite its widespread occurrence, the function of yawning remains a mystery 1. Indeed, yawning has been suggested as (i) a cooling mechanism for the brain to maintain cognitive function; (ii) a communicative behavior to indicate drowsiness or stress; (iii) a way to maintain vigilance/promote alertness among animals 2. [...]
Filed under: Animal Behavior, Animal Cognition, Primatology | Tagged: empathy, gelada, yawning | 5 Comments »
