Fission and troop size in a mountain baboon population

1997 ◽  
Vol 53 (3) ◽  
pp. 525-535 ◽  
Author(s):  
S.P. HENZI ◽  
J.E. LYCETT ◽  
S.E. PIPER
Keyword(s):  
Troop Size

scholarly journals Status And Effects Of Food Provisioning on Ecology of Assamese Monkey (Macaca Assamensis) In Ramdi Area of Palpa, Nepal

2018 ◽  
Vol 22 (2) ◽  
pp. 183-190
Author(s):  
Krishna Adhikari ◽  
Laxman Khanal ◽  
Mukesh Kumar Chalise
Keyword(s):  
Survey Methods ◽  
Time Budget ◽  
Food Provisioning ◽  
Population Status ◽  
Female Ratio ◽  
Troop Size ◽  
Macaca Assamensis ◽  
Adult Sex Ratio ◽  
In The Wild ◽  
Group Density

The population status of Assamese monkey (Macaca assamensis) (McClelland 1840) and its interaction with the local people is poorly documented in Nepal. In 2014, we studied the population status, diurnal time budget and human-monkey conflict in Ramdi, Nepal by direct count, scan sampling and questionnaire survey methods, respectively. Two troops of Assamese monkey having total population of 48 with the mean troop size of 24 individuals were recorded in the study area. The group density was 0.33 groups / km² with a population density of 6 individuals/ km². The male to female adult sex ratio was 1:1.75 and the infant to female ratio was 0.85. The provisioned troop of Assamese monkey in Ramdi spent less time in feeding and movement while higher time was invested in resting and grooming than the nonspecific populations in the wild habitats. The human-monkey conflict is high in Ramdi, primarily due to the crop-raiding from fields and even the storage; the major crops raided are maize, vegetables, pulses and fruits. The higher reproductive success in terms of infant to adult female ratio, increased human-monkey conflicts and lesser investment of the diurnal time in foraging and feeding by Assamese monkey troop of Ramdi might be associated with the food provisioning. Journal of Institute of Science and TechnologyVolume 22, Issue 2, January 2018, Page: 183-190

Does troop size of wild Japanese macaques influence birth rate and infant mortality in the absence of predators?

Primates ◽  
1998 ◽  
Vol 39 (2) ◽  
pp. 245-251 ◽  
Author(s):  
Yukio Takahata ◽  
Shigeru Suzuki ◽  
Naobi Okayasu ◽  
Hideki Sugiura ◽  
Hiroyuki Takahashi ◽  
...  
Keyword(s):  
Infant Mortality ◽  
Birth Rate ◽  
Japanese Macaques ◽  
Troop Size

scholarly journals Assamese Monkeys in Nagarjun Forest of Shivapuri Nagarjun National Park, Nepal

2013 ◽  
Vol 28 (1-2) ◽  
pp. 181-190 ◽  
Author(s):  
Mukesh K Chalise ◽  
Hideshi Ogawa ◽  
Bishnu Pandey
Keyword(s):  
Sex Ratio ◽  
National Park ◽  
Temperate Forest ◽  
Sampling Methods ◽  
Population Distribution ◽  
Age Groups ◽  
Male And Female ◽  
Ring Road ◽  
Troop Size ◽  
Macaca Assamensis

The population distribution of Assamese monkey Macaca  assamensis were studied in Nagarjun forest of Shivapuri Nagarjun National Park, Nepal and data collected during Dec. 2013 and January 2014, by scan sampling methods along with transect walk through forest trails and ring-road of forest. Sevenbi sexual troops were observed in subtropical/lower temperate forest of Nagarjun forest especially around Raniban forest area. The observed smallest troop was with 9 individuals while the largest troop had 37 (41) individuals of different age. The average troop size is 20.57. Out of three broad age groups adults were 56.31% and immature 43.06% while infant alone were 18.06%. The sex ratio between male and female was 1:1.34. Plant usage for feeding and resting were also enumerated. Nagarjun forest troops use mostly tall trees for the night halts and resting in day time.

Effects of Patch Quality and Feeding Subgroup Size On Feeding Success in Vervet Monkeys (Cercopithecus Aethiops)

Behaviour ◽  
1988 ◽  
Vol 105 (1-2) ◽  
pp. 35-52 ◽  
Author(s):  
P.L. Whitten
Keyword(s):  
Food Resource ◽  
Cercopithecus Aethiops ◽  
Foraging Efficiency ◽  
Vervet Monkeys ◽  
Patch Quality ◽  
Foraging Success ◽  
Group Foraging ◽  
Phenological Data ◽  
Subgroup Size ◽  
Troop Size

AbstractAcacia tortilis flowers are an important food resource of vervet monkeys (Cercopithecus aethiops) in East Africa. This paper examines the effects of tortilis patch quality and feeding subgroup size on individual and group foraging success in vervet monkeys. Feeding variables examined included net caloric gain, foraging efficiency, pick rates, and foraging bout length. The data provide some evidence in support of the hypothesis -that patch quality significantly influences foraging success. Patches where flower pick rates were higher provided foraging for a greater proportion of the troop and provided more energy intake and higher foraging efficiency for individual troop members. Phenological data indicate that flower pick rates were a direct reflection of patch size and flower cover. On the other hand, data examined here provide no support for the hypothesis that feeding subgroup size adversely affects food intake or foraging efficiency within food patches. The lack of foraging costs appears to be due to adjustment of feeding parties to the size of food patches. Troop size, however, exceeded the average number of feeding sites per A. tortilis patch. As a consequence, low-ranking troop members suffered foraging costs due to exclusion from food patches. These analyses suggest that individual differences in benefits and costs of group foraging may play an important role in the history and evolution of groups.

Troop size, home range area and seasonal range use of the Japanese macaque in the Northern Japan Alps

2003 ◽  
Vol 18 (5) ◽  
pp. 465-474 ◽  
Author(s):  
Shigeyuki Izumiyama ◽  
Takashi Mochizuki ◽  
Toshiaki Shiraishi
Keyword(s):  
Home Range ◽  
Japanese Macaque ◽  
Range Use ◽  
Troop Size ◽  
Northern Japan

scholarly journals Ecology and Behavior of Assamese Monkeys in Shivapuri Nagarjun National Park, Nepal

2015 ◽  
Vol 27 ◽  
pp. 12-24 ◽  
Author(s):  
Mukesh K Chalise ◽  
Gopal Prakash Bhattarai ◽  
Bishnu Pandey
Keyword(s):  
National Park ◽  
Temperate Forest ◽  
Sampling Methods ◽  
Population Distribution ◽  
Age Groups ◽  
Primary Sources ◽  
River Bank ◽  
Marginal Areas ◽  
Troop Size ◽  
And Behavior

The population distribution and diurnal behavior of Assamese monkey Macaca assamensis were studied in Shivapuri Nagarjun National Park, Nepal and data collected during Dec. 2011 to March 12 by scan sampling methods along with application of ArcGIS software. Seven bisexual troops were observed in subtropical/lower temperate forest of Shivapuri Nagarjun National Park and its marginal areas near to human settlement. The observed smallest troop was with 12 individuals while the largest troop had 35 individuals of different age. The average troop size is 23.71 with standard deviation 9.22. Out of three broad age groups adults were 40.27%, immature 42.95% and infants were 14.09 %. The sex ratio between male and female was 1:1.03.A troop was selected as focal troop for behavioral study after habituation. Foraging/eating covered 46% of total observed time while resting 19%, locomotion 16%, sleeping 12%, grooming 6%, and playing 1%. Some other behavior noticed such as aggression, copulation, stone licking, coughing and sniffing for short duration. Young and tender leaves as well as burgeoning twigs were primary sources of food (38.24 %) for winter followed by seeds (35.29%, moss and epiphytes (14.71%), insects (5.88%) and others 5.88%. while water drinking was never observed. All troops in Shivapuri forest were found residing on the steep cliffs along with river bank while Nagarjun forest troops used cliff as well as tall trees.J. Nat. Hist. Mus. Vol. 27, 2013: 12-24

Sign in / Sign up

Export Citation Format

Share Document