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Providing evidence to improve practice

Individual study: Sightings of aye-ayes and red-ruffed lemurs on Nosy Mangabe and the Masoala Peninsula

Published source details

Constable I.D., Mittermeier R.A., Pollock J.I., Ratsirarson J. & Simons H. (1985) Sightings of aye-ayes and red-ruffed lemurs on Nosy Mangabe and the Masoala Peninsula. Primate Conservation, 5, 59-62


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Reintroduce primates in groups Primate Conservation

A study in 1967-1985 in a coastal rainforest on Nosy Mangabe island in Madagascar found that populations of aye-ayes Daubentonia madagascariensis, white-fronted lemurs Eulemur albifrons and black-and-white ruffed lemurs Varecia variegata variegata that were reintroduced as groups, had persisted at least 18 years (aye-ayes) and 55 years (white-fronted lemurs, black-and-white ruffed lemurs) post-release. One aye-aye was sighted in 1975, two in 1981, a mother and her infant in 1983 and another two individuals in 1984. At least four groups of white-fronted lemurs and eight groups of black-and-white ruffed lemurs appeared live on the island in 1984. A group of nine (four females and five males) aye-ayes caught in different locations were released on the island in 1967. It is unclear whether wild aye-ayes occurred on the island before reintroduction. An unknown number of white-fronted lemurs and black-and-white ruffed lemurs were released on the island in the 1930s. No systematic surveys were conducted on the island.