The Crab-eating Macaque (Macaca fascicularis) is an arborealmacaque native to South-East Asia. It is also called the Cynomolgus Monkey or Long-tailed Macaque.
It is found throughout most of South-East Asia, including the islands of Sumatra, Java, and Borneo, as well as in the country of the Philippines. These monkeys are often unafraid of humans, and are found in many cities and villages. A population of Crab-eating Macaques, fed by locals, lives in the middle of the city of Lopburi in Thailand.
Crab-eating Macaques are born with black fur, but the fur turns to a yellow-green, grey-green, or reddish-brown shade as they grow. They have dark snouts, and bluish abdominal skin. They live in groups of between 20 to 60 individuals. Generally there are about 2.5 adult females for every adult male. They live for about four years in the wild, but in captivity have been known to live for up to 38 years.
There is some significant diversity within the species and these differences are classified into 10 subspecies:
Descriptors: long-tailed macaque, Macacafascicularis, clinical signs of anorexia and depression, fatal outcome after ingestion of rope, septic peritonitis, perforation of small intestine, rope as environmental enrichment.
Abstract: More long-tailed macaques (Macacafascicularis) than any other primate are imported into the UK for research, and journey times may be of up to 58 h.
Descriptors: Macaca mulatta, Macacafascicularis, primates as laboratory animals, male macaques, psychological well-being, group housing of primates with implanted devices, pair housing as social enrichment, controlled access to water, prostheses and implants, social behavior of primates in captivity, biomedical research environment, environmental enrichment, animal welfare, animal behavior.
The aim of the present investigation was to study the role of interdigitation in the coordination of the maxillary and mandibular growth and the development of their dentition.
As an experimental animal, the Macacafascicularis monkey was used, in which the interdigitation was eliminated by grinding of the cusps of the deciduous canines and molars and the first permanent molars.
The results suggest that the dento-facial growth and development in the juvenile M. fascicularis and in humans have many points in common, and therefore M. fascicularis appears to be a good model for further studies in the regulation of the processes involved.
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