Das Sogenannte Urinmarkieren von Totenkopfaffen (Saimiri Sciureus) in Abhängigkeit von Umweltbedingten und Emotionalen Faktoren

Abstract

Urine washing was performed by male and female monkeys equally with considerable differences among individuals. During the highly aggressive phase at the beginning of group fusion, the losing group performed urine washing half as often as the winning group. When the cage floor was wet, the frequency of urine washing was about 1/10 of the frequency when the cage floor was dry. The presence of sand on the cage floor and the sittingbars increased the frequency of urine washing 4-17 times. Emotional factors influenced the frequency of urine washing much less than did changes in physical factors. Urine washing is evidently very important for cleansing and moistening of the palms and soles of squirrel monkeys.