Cost-free vigilance during feeding in folivorous primates? Examining the effect of predation risk, scramble competition, and infanticide threat on vigilance in ursine colobus monkeys (Colobus vellerosus)

2011 ◽  
Vol 66 (3) ◽  
pp. 453-466 ◽  
Author(s):  
Julie A. Teichroeb ◽  
Pascale Sicotte
Keyword(s):  
Predation Risk ◽  
Scramble Competition ◽  
Colobus Vellerosus ◽  
Colobus Monkeys

scholarly journals Interactions between social groups of colobus monkeys (Colobus vellerosus) explain similarities in their gut microbiomes

2020 ◽  
Vol 163 ◽  
pp. 17-31 ◽  
Author(s):  
Eva C. Wikberg ◽  
Diana Christie ◽  
Pascale Sicotte ◽  
Nelson Ting
Keyword(s):  
Social Groups ◽  
Colobus Vellerosus ◽  
Colobus Monkeys

Use of sleeping trees by ursine colobus monkeys (Colobus vellerosus) demonstrates the importance of nearby food

Primates ◽  
2012 ◽  
Vol 53 (3) ◽  
pp. 287-296 ◽  
Author(s):  
Julie A. Teichroeb ◽  
Teresa D. Holmes ◽  
Pascale Sicotte
Keyword(s):  
Colobus Vellerosus ◽  
Colobus Monkeys

scholarly journals Dispersal in male ursine colobus monkeys (Colobus vellerosus): influence of age, rank and contact with other groups on dispersal decisions

Behaviour ◽  
2011 ◽  
Vol 148 (7) ◽  
pp. 765-793 ◽  
Author(s):  
Julie A. Teichroeb ◽  
Pascale Sicotte ◽  
Eva C. Wikberg
Keyword(s):  
Colobus Vellerosus ◽  
Colobus Monkeys

Feeding competition inferred from patch depletion in a supergroup of Rwenzori black-and-white colobus monkeys (Colobus angolensis ruwenzorii) in Rwanda

Behaviour ◽  
2020 ◽  
Vol 157 (8-9) ◽  
pp. 731-760
Author(s):  
Alex Miller ◽  
Debra S. Judge ◽  
Grace Uwingeneye ◽  
Dieudonne Ndayishimiye ◽  
Beth A. Kaplin ◽  
...  
Keyword(s):  
Scramble Competition ◽  
Feeding Competition ◽  
Intake Rate ◽  
Contest Competition ◽  
Black And White ◽  
Mature Leaves ◽  
Colobus Monkeys ◽  
Colobus Angolensis ◽  
Black And White Colobus ◽  
Patch Depletion

Abstract Competition for food is often a cost associated with living in a group, and can occur in an indirect (scramble) or direct (contest) form. We investigated feeding competition in a supergroup of Rwenzori black-and-white colobus monkeys (Colobus angolensis ruwenzorii) in Rwanda, with the aim of establishing whether freedom from scramble competition allows these monkeys to form supergroups. We used the patch depletion method, measuring intake rate coupled with movement rate, to assess if food patches become depleted over the occupancy period. Resource depletion was evident when the colobus fed on young leaves, but not when feeding on mature leaves. Scramble competition was inferred from a negative correlation between group size and change in intake rate over patch occupancy. Between-group contest competition was inferred from displacement from patches. Although feeding competition exists for select resources, limited competition for mature leaves may enable Rwenzori colobus to live in a supergroup of hundreds of individuals in this montane forest.

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