Population Structure, Home Range and Food Habits of Hanuman Langur in Gir Lion Sanctuary and National Park, India

摘要

Aspects of ecology of Hanuman langur Presbytis entellus entellus were studied from January 2002 to March 2002. Langur troops were located through systematic surveys and by monitoring of road and foot transects. Visual counts were carried out and troops were classified into different age and sex categories. Data on food habits were collected by direct observations. Adhoria and Pilipat troops were followed from dawn to dusk in order to determine the winter home ranges of both troops. Troop size ranged from 45 to 15 individuals and average troop size was 19. Sex ratio, biased in favour of female, was 1 ♂: 3.02♀. Langurs utilised 41 plant species in the study area. The size of the winter home range of Adhoria and Pilipat langur troop was 0.28 km~2 and 0.44 km~2, respectively. The findings of this study are discussed in the light of result obtained in other studies carried out on Hanuman langur in India.