关键词: 川金丝猴, 食性, 季节性食性转换

Abstract: From 2005 to 2008,we studied the diet of golden snub-nosed monkeys(Rhinopithecus roxellana)in Qingmuchuan Nature Reserve,Shaanxi Province,China. We made 73 -day observations on the monkeys in the field,including 31 days in summer and 42 days in winter during the period. Golden snub-nosed monkeys were found feeding on 42 plant species,belonging to 34 genera of 23 families. Twenty-one plant species were consumed in summer while 25 species were fed on in winter; among these plants,two species were eaten in both winter and summer. The monkeys consumed Rosaceae the most,followed by Fagaceae. Plant parts consumed by the monkey were fruits,flowers,leaves,buds and barks. The monkeys had a primarily frugivorous diet in summer and a folivorous diet in winter. Frequencies of the monkey feeding on fruits increased from 5. 6% in winter to 72. 2% in summer. In winter,leaves were the main foods,accounting for 73. 0% of the total observations. Fruit of the giant dogwood (Cornus controversa)was the major food in summer. Bark-stripping mainly occurred in deciduous broadleaved forests,and coniferous-deciduous broadleaved mixed forests,but seldom occured in mixed evergreen and deciduous broadleaved forests. Compared with the diets of other snub-nosed monkeys reported in recent years,we found that the monkeys in Qingmuchuan had a wide food spectrum,dominated by species of Rosaceae and Fagaceae,as well as Betulaceae,Cornaceae, Caprifoliaceae,Aceraceae and Betulaceae.

Key words: Diet, Dietary seasonality, Qingmuchuan Nature Reserve, Golden snub-nosed monkeys(Rhinopithecus roxellana)