| motor activity of different-aged cercopithecidae: silvered-leaf monkey (presbytis cristatus esch.), lion-tailed monkey (macaca silenus l.), moor macaque (macaca maura cuv.) as observed in the zoological garden, berlin (west). | the activity of different-aged monkeys belonging to three species of cercopithecidae was quantitatively analyzed in a 1 1/2-year study. the species, silvered-leaf monkey (presbytis cristatus esch.), lion-tailed monkey (macaca silenus l.) and moor macaque (macaca maura cuv.) were observed in the zoological garden, berlin (west). the data of a combined cross-sectional analysis across all three species indicate that the course of age-related changes in the frequency of movement can be depicted as g ... | 1986 | 3721206 |