Pembentukan Kelompok Monyet Ekor Panjang (Macaca fascicularis) yang Diintroduksi ke Pulau Tinjil, Jawa Barat

Abstract

Between 1;ebruary 1488 and June 1941, 478 long-tailed macaques (58 males, 420 females) were released onto 'Tinjil Island to estahlisli a natural habitat breeding facility. The monkeys were released on 10 different occasions over the three years period and did not represent established social groups at the time of release. Approxirnalely 33% of the entire breeder populalion (28 males and 130 females) has been identified by tattoo. Because each monkey received a chest tattoo before released onto the island, it has been possible to reconstruct and tract social group formation by matching an individual's tattoo with its date of release. Assesment of the tattoo data From five of the groups identified on the island indicates that the social groups are not composed of animals from a single release group, hut rather consist of animals from several release groups. Animals from all 10 release groups are represented among the five social groups. Membership in the five groups has remained relatively stahle during the past four years olohservation (1990-1993) with minimal exchange of group members.