关键词: 黑叶猴, 日活动, 时间分配

Abstract: The daily activity patterns of the wild adult Francois'Langurs(Trachypithecus francoisi fiancoisi) were observed in the core zone of Mayanghe Nature Reserve of Guizhou Province between 1998-2000.The behaviors of wild adult Francois'Langur were recorded at 1 minute intervals using an instantaneous sampling method.The behavior of the last second of each minute was recorded and defined as the behavior type score for that minute.Because of limitations imposed by the field conditions, caused by vegetation, terrain and climate, and change of the adult Francois'Langurs activity, a continuous and integrated daily field observation record could not be obtained. Consequently the continuous daily behavior pattern was reconstructed by cutting and reassembling behavioral data of different time intervals of different days, but of the same season and at the same observation spot, according to a prior principle of choosing data with along continuous record. The results indicated that rest, forage, traveling, grooming, cuddling and playing activities accounted for 63.8, 2.0％, 2.3%,0.5% and 0.1% respectively in the daily time budget of the wild adult Francois'Langur during the study period. Therefore the most time was spent on restsecondly on forage and traveling, and the least time on grooming，cuddling and playing by the wild adult Francois’langur. The patterns of activity rhythms of wild adult Francois’Langur did not show marked seasonal difference. The percent,peak value an d duration of various behaviors were different in different seasons. Two or more activity peaks were found for forage and rest in each season. but four peaks were found for forage in summer,and three peaks were recorded for rest in summer and in autumn. The daily activity patterns of traveling changed little in different, seasons. The daily rhythms in playing,cuddling and grooming appeared or not in different seasons. The time budget of various behaviors of wild adult Francois’langur was mainly determined by habitat type and quality. Habitat provided adult Francois’langur with different main food resources in different seasons, which changed the forage time budget of this species, and the time budget of other behaviors showed related change. The lack of a marked significant seasonal difference in daily activity rhythm could reflect a lack of marked seasonal changes in the vegetation of this habitat．

Key words: Francois'langur(Trachypithecus francoisi francoisi), Daily activity, Time budget