The muriqui was once widespread in the Atlantic Forest Region, but today the southern species is thought to number just under 1,000 individuals (4). This region of Brazil has been devastated by habitat destruction as it is the most populated and industrious region of the country (4). Vast tracts of forest have been lost. In addition, these large primates were an important food source for people in the region and have been widely hunted (4).
The muriqui has been a flagship species for the conservation of Brazil's fragile Atlantic Forest Region (8). Conservation efforts are still imperative and “Programme Muriqui” will continue to undertake research on populations within the Serra dos Organos National Park; the possibility of reintroductions is being investigated and an ongoing education programme has been established (9).