PRIMATE POPULATION DENSITY AND SIZES IN BAC SON DISTRICT, LANG SON PROVINCE

DOI: 10.18173/2354-1059.2023-0065

Tóm tắt

Primate species composition has been surveyed in Bac Son district, Lang Son province, but no study has provided an estimation of the primate densities. Our research was conducted in 32 days, in September-October 2018 using line transects for 21 days and 11 nights. In Bac Son district, 03 primate species have been recorded including Bengal Slow Loris (Nycticebus bengalensis) with a density of about 0.02 individuals/ha, a population size estimated at 673 individuals, Rhesus Monkey (Macaca mulatta) with a density of about 0.03 individuals/ha and estimated population size of about 1010 individuals, and the Assamese Macaque’s (Macaca assamensis). Information on Macaca assamensis was only obtained from interviews and that was estimated of more than 12 individuals. Primate species were only found in secondary forests on rocky mountains, but not in soil mountainous areas, possibly due to higher hunting pressure.