A group of nine (four females and five males) aye-ayes caught in different locations were released on the island in 1967. At least four groups of white-fronted lemurs and eight groups of black-and-white ruffed lemurs appeared live on the island in 1984. One aye-aye was sighted in 1975, two in 1981, a mother and her infant in 1983 and another two individuals in 1984. Supporting evidence from individual studiesĪ 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.
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