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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Nest groups of wild bonobos at Wamba: Selection of vegetation and tree species and relationships between nest group size and party size
American Journal of Primatology, Volume 72, No. 7, Year 2010
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Description
We examined the location of nest groups, spatial distribution of nests within a nest group, and attributes of individual nests of wild bonobos at Wamba, Democratic Republic of Congo. We also examined the seasonal factors influencing nesting behavior and compared the nest group size with the 1 hr party size during daytime. We defined a nest group to be a cluster of nests that were built in the same evening and found within 30m from the other nearest nest. Examination of the largest gap within a nest group suggested that 30m was an acceptable cutoff value. Monthly rainfall or fruit abundance did not significantly influence the monthly mean nest group size. Nests were built in the swamp forest for as many as 13% observation days, suggesting the need for reevaluation of the use of swamp forest by bonobos. The use of swamp forest was influenced not by seasonal rainfall or fruit abundance, but by the fruiting of specific species. Preferred tree species for building nests accounted for 19.8% of standing trees, which suggested that the selection of sleeping sites was not largely restricted by the distribution of specific species. The mean 1 hr party size was almost identical through the day and was similar to the mean nest group size. Parties of bonobos sometimes split into smaller nest groups, especially when feeding on non-preferred fruits during fruit scarcity. By contrast, when feeding on preferred fruits while ranging in large parties, they often aggregated to form even larger nest groups. When sleeping in small- or middle-sized nest groups, they tended to aggregate the next morning. These tendencies may reflect the gregarious nature of bonobos who prefer to range or sleep together as far as circumstances allow. © 2010 Wiley-Liss, Inc.
Authors & Co-Authors
Mulavwa, Mbangi N.
Democratic Republic Congo
Ministry of Scientific Research
Yangozene, Kumugo
Democratic Republic Congo
Ministry of Scientific Research
Yamba-Yamba, Mikwaya
Democratic Republic Congo
Ministry of Scientific Research
Motema-Salo, Balemba
Democratic Republic Congo
Ministry of Scientific Research
Mwanza, Ndunda
Democratic Republic Congo
Ministry of Scientific Research
Furuichi, Takeshi
Japan, Kyoto
Kyoto University
Statistics
Citations: 80
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1002/ajp.20810
ISSN:
02752565
e-ISSN:
10982345
Study Locations
Congo