The dominant species of monkeys (macaca fascicularis) in northern region of peninsular Malaysia

A comprehensive population study of three monkey species (i.e. macaca fascicularis,macaca nemestrina and trachypithecus obscurus) was piloted to determine the dominant species,population quantity and group size. the survey was conducted between november 2011 and may 2012. the technique adapted for the study was scan sampling method; population survey showed that there were 23 groups of 508 individuals of three monkeys' species in three states of peninsular malaysia (penang,kedah and perak). one-way anova test was used to find the significant difference among above three species and to compare their means. adult males showed a significant difference between two species in terms of population (i.e. macaca fascicularis and macaca nemestrina and p-value is p<0.01). adult females,sub-adults and juveniles were found to be significant as compared to macaca fascicular and macaca nemestrina which were found p<0.008,p<0.01 and p<0.04 respectively. the infants were found nonsignificant and trachypithecus obscurus showed no variation in comparison with other two species. the survey discovered that the macaca fascicularis was the most dominant species of peninsular malaysia. it was noted that the population of macaca nemestrina was declining and the population of trachypithecus obscurus was stable species of peninsular malaysia. copyright © 2012 zoological society of pakistan.