We ain’t monkeyin’ around here.
Many animals, including chimpanzees and bonobos, have food related calls... But aside from anecdotal reports, there was no evidence of this behavior in gorillas, until now. A new paper in PLoS One documents that the wild western lowland gorillas in the Republic of the Congo sing and hum when eating, as a way to express... Continue Reading →
In the current early edition of the journal PNAS a new paper raises a suggestion that the common primate ancestor originated in Asia and not Africa through the discovery of a new species. This new 37-million-year-old fossil was discovered in the Pondaung sediment at Thamingyauk locality in Myanmar. The species has been named Afrasia djijidae based... Continue Reading →
By: Kristin Abt A recent article in the journal, Zoo Biology, discusses the current lack of gum enrichment for certain primate species in a captive setting that is in contrast to their wild behavior. Huber and Lewis (2011) surveyed zoos at an international scale to assess the occurrence and methods of “gum-based enrichment.” They identify... Continue Reading →
Anti-predatory alarm calls are important for social animals to alert others of approaching predators. Without the presence of "language", some non-human primates are known to give out different predator-specific alarm calls to alert conspecific. These non-human primates include ring-tailed lemurs (Zuberbühler et al., 1999), white-faced capuchin monkeys (Fichtel et al., 2005), Diana monkeys (Zuberbühler, 1999), Campbell's monkeys... Continue Reading →
By: Kristin Abt The Lion-tailed Macaque (Macaca silenus) is an endangered cercopithecine primate native to the Western Ghats region of India, described as one of the primary hotspots of biodiversity in the world (Kumara & Singh, 2004). IUCN (2010) estimates a mere 2,500 mature individuals with a total population size of 4,000 individuals. Furthermore, these... Continue Reading →
Animation of chimpanzee yawning from Emory University. Illustration from BBC News. I'm sure we are all familiar with this scenario: Someone yawns and we would "catch" it or vice versa. This is the phenomenon of contagious yawning. A new paper from The Proceedings of The Royal Society "Computer animations stimulate contagious yawning in chimpanzees" suggests... Continue Reading →
A Fongoli chimp. Photo by Frans Lanting, National Geographic. I just stumbled upon this on Twitter (Thanks to DarwinMonkey). It's a National Geographic page about the Senegalese Fongoli chimps, named after the Fongoli stream that runs through the chimpanzee's range. There are videos showing these chimps using tools fishing for termites, hunting a bushbaby and... Continue Reading →
A research from Duke University by Daniel Schmitt, associate professor of evolutionary anthropology, and Tracy Kivell, a post-doctoral research associate, shows that human evolved from tree climbing ancestors, not from knuckle-walkers. Schmitt and Kivell examined and compared the wrist bones of humans and African apes. Their research, "Independent evolution of knuckle-walking in African apes shows... Continue Reading →
A Geoffroy's Spider Monkey hanging on the branch. Photo from Primate Info Net. Wild Geoffroy's Spider Monkeys (Ateles geoffroyi) or Black-handed Spider Monkeys had been documented using tools to scratch themselves, according to a new publication "Tool use in wild spider monkeys (Ateles geoffroyi)". Important to note that spider monkeys do not have thumbs, only... Continue Reading →
