scholarly journals Coordination during group departures and group progressions in the tolerant multilevel society of wild Guinea baboons (Papio papio)

2019 ◽  
Author(s):  
Davide Montanari ◽  
Julien Hambuckers ◽  
Julia Fischer ◽  
Dietmar Zinner
Keyword(s):  
Social Organization ◽  
Resource Distribution ◽  
Papio Hamadryas ◽  
Primate Species ◽  
Test Case ◽  
List Type ◽  
Adult Males ◽  
Hamadryas Baboons ◽  
Group Coordination ◽  
Papio Papio

AbstractObjectivesMost primate species live in groups, and temporal and spatial coordination of activities of individuals is essential for maintaining group cohesion, and there is still considerable debate to which degree social organization, the extent of despotism, and resource distribution shape group coordination processes. As different baboon species exhibit considerable variation in all of these factors, they constitute an excellent test case to resolve this debate.Materials and MethodsWe analyzed group departures and progressions of Guinea baboons, Papio papio, in the Niokolo Koba National Park in Senegal. Guinea baboons live in a multi-level society with strong male bonds and a lack of a clear dominance hierarchy between males.ResultsTwo-thirds of departures were initiated by adult males, and one third by adult females. Although initiators were more likely to signal than followers, signaling did not affect the initiation success. During group progression, males that were not affiliated with females were predominantly found in the front, while affiliated males, females and young were observed more frequently closer to the center of the group, and no preferences for rear positions. Overall, affiliated subjects were more likely to depart and travel together.DiscussionThe group departures in Guinea baboons differed strikingly from the elaborate ‘negotiation’ behaviors among male hamadryas baboons, Papio hamadryas. We did not observe that specific individuals dominated the group coordination. Neither social organization, variation in despotism, nor resource distribution alone explain variation between species. Future studies should test whether specific combinations of factors promote the occurrence of negotiation processes.Research HighlightsIn wild Guinea baboons, both adult males and females initiated group departuresInitiators signaled during departures, but this did not affect initiation successSolitary males were predominantly found at the front during group progression

scholarly journals Coordination during group departures and progressions in the tolerant multi-level society of wild Guinea baboons (Papio papio)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Davide Montanari ◽  
William J. O’Hearn ◽  
Julien Hambuckers ◽  
Julia Fischer ◽  
Dietmar Zinner
Keyword(s):  
Adult Males ◽  
Hamadryas Baboons ◽  
Similar Frequency ◽  
Group Coordination ◽  
Collective Movement ◽  
Males And Females ◽  
Multi Level ◽  
Individual Success ◽  
Almost All ◽  
Papio Papio

AbstractCollective movement of social groups requires coordination between individuals. When cohesion is imperative, consensus must be reached, and specific individuals may exert disproportionate influence during decision-making. Animals living in multi-level societies, however, often split into consistent social subunits during travel, which may impact group coordination processes. We studied collective movement in the socially tolerant multi-level society of Guinea baboons (Papio papio). Using 146 group departures and 100 group progressions from 131 Guinea baboons ranging in Senegal’s Niokolo-Koba National Park, we examined individual success at initiating group departures and position within progressions. Two-thirds of attempted departures were initiated by adult males and one third by adult females. Both sexes were equally successful at initiating departures (> 80% of initiations). During group progressions, bachelor males were predominantly found in front, while reproductively active ‘primary’ males and females were observed with similar frequency across the whole group. The pattern of collective movement in Guinea baboons was more similar to those described for baboons living in uni-level societies than to hamadryas baboons, the only other multi-level baboon species, where males initiate and decide almost all group departures. Social organization alone therefore does not determine which category of individuals influence group coordination.

scholarly journals A multi-level society comprised of one-male and multi-male core units in an African colobine (Colobus angolensis ruwenzorii)

2019 ◽  
Author(s):  
Samantha M. Stead ◽  
Julie A. Teichroeb
Keyword(s):  
Social Organization ◽  
Mammalian Species ◽  
Hierarchical Cluster ◽  
Adult Males ◽  
Hamadryas Baboons ◽  
The Social ◽  
Multi Level ◽  
Using Data ◽  
Hierarchical Cluster Analyses ◽  
Insight Into

AbstractA few mammalian species exhibit complex, nested social organizations, termed multi-level societies. Among nonhuman primates, multi-level societies have been confirmed in several African papionin and Asian colobine species. Using data on individually-recognized Rwenzori Angolan colobus at Lake Nabugabo, Uganda, we document the first multi-level society in an African colobine. The study band comprised up to 135 individuals living in 12 socially and spatially distinct core units that ranged in size from 4 to 23 individuals. These core units shared a home range, and fissioned and fused throughout the day. Using the association indices between core units, we employed hierarchical cluster analyses and permutation tests to show that some core units clustered into clans. Thus, we confirm three tiers of social organization for Rwenzori Angolan colobus: core unit, clan, and band. The social organization of this subspecies is unlike any reported previously in a nonhuman primate, with about half the core units containing a single adult male and the others containing multiple reproductive adult males. Preliminary data show males to transfer within the band and female to transfer outside of the band, which suggests that, like Hamadryas baboons, this subspecies could provide insight into the selective pressures underlying hominin social organization.

scholarly journals Group Composition of Guinea Baboons (Papio papio) at a Water Place Suggests a Fluid Social Organization

2011 ◽  
Vol 32 (3) ◽  
pp. 652-668 ◽  
Author(s):  
Annika Patzelt ◽  
Dietmar Zinner ◽  
Gisela Fickenscher ◽  
Sarany Diedhiou ◽  
Becaye Camara ◽  
...  
Keyword(s):  
Social Organization ◽  
Group Composition ◽  
Papio Papio

scholarly journals Predatory Behavior of Yellow Baboons

Behaviour ◽  
1976 ◽  
Vol 56 (1-2) ◽  
pp. 44-67 ◽  
Author(s):  
Glenn Hausfater
Keyword(s):  
Prey Item ◽  
Prey Species ◽  
Predatory Behavior ◽  
Primate Species ◽  
Papio Cynocephalus ◽  
Vervet Monkeys ◽  
Adult Males ◽  
Lepus Capensis ◽  
Number Of Individuals ◽  
Prey Items

Abstract1. A group of 32 yellow baboons (Papio cynocephalus) in the Masai-Amboseli National Park, Kenya, caught and ate 45 vertebrate prey items during 2519.19 hours of observation. 2. Eighty percent of the prey items were mammals and the most frequently eaten species were African hares (Lepus capensis), vervet monkeys (Cercopithecus aethiops) and neonate gazelle (Cazella granti and G. thomsoni) in that order. The details of predatory behavior for each prey species are described. 3. Rates of predation were significantly higher during the long dry season than during other months of the year, although no correlation was found between total monthly rainfall and monthly rates of predation. A lognormal model however provided a good fit to the monthly rate of predation data suggesting that the rate of predation by Amboseli baboons was affected by several factors that acted multiplicatively with respect to each other and were themselves related to rainfall or dryness. 4. A mean of 2.3 individuals fed directly from the carcass of each prey item. A mean of 3.5 individuals per prey item fed directly or indirectly, i.e., on scraps, from each carcass. In general, both the number of individuals who fed from each carcass and the duration of their feeding bouts was dependent upon the gross body size of the prey item. Adult males fed directly from the carcass of prey items for about three times more minutes than expected from their number in the group; other classes of individuals fed directly from prey carcasses for only one-fourth as many minutes as expected. In general, an adult male would be expected to feed on each category of vertebrate prey at least once per year, while individuals of all other age-sex classes would be expected to feed on most prey categories only once every two years. 5. The most frequent social behavior around prey items was agonistic bouts; no cooperation, simultaneous feeding or specific begging gestures were observed. 6. Estimates of the total number of prey killed annually by Amboseli baboons indicate that baboon predation probably has a negligible effect on prey populations other than vervet monkeys. 7. It is speculated that the need for vitamin B12 underlies baboon predatory behavior, and perhaps that of other primate species as well.

scholarly journals Novel Genital Alphapapillomaviruses in Baboons (Papio hamadryas Anubis) With Cervical Dysplasia

2012 ◽  
Vol 50 (1) ◽  
pp. 200-208 ◽  
Author(s):  
I. L. Bergin ◽  
J. D. Bell ◽  
Z. Chen ◽  
M. K. Zochowski ◽  
D. Chai ◽  
...  
Keyword(s):  
Cervical Dysplasia ◽  
Intraepithelial Neoplasia ◽  
Papio Hamadryas ◽  
Primate Species ◽  
Low Grade ◽  
Sexually Transmitted ◽  
Olive Baboons ◽  
Papio Hamadryas Anubis ◽  
Squamous Intraepithelial Neoplasia ◽  
Human Infections

Genital Alphapapillomavirus (αPV) infections are one of the most common sexually transmitted human infections worldwide. Women infected with the highly oncogenic genital human papillomavirus (HPV) types 16 and 18 are at high risk for development of cervical cancer. Related oncogenic αPVs exist in rhesus and cynomolgus macaques. Here the authors identified 3 novel genital αPV types (PhPV1, PhPV2, PhPV3) by PCR in cervical samples from 6 of 15 (40%) wild-caught female Kenyan olive baboons ( Papio hamadryas anubis). Eleven baboons had koilocytes in the cervix and vagina. Three baboons had dysplastic proliferative changes consistent with cervical squamous intraepithelial neoplasia (CIN). In 2 baboons with PCR-confirmed PhPV1, 1 had moderate (CIN2, n = 1) and 1 had low-grade (CIN1, n = 1) dysplasia. In 2 baboons with PCR-confirmed PhPV2, 1 had low-grade (CIN1, n = 1) dysplasia and the other had only koilocytes. Two baboons with PCR-confirmed PhPV3 had koilocytes only. PhPV1 and PhPV2 were closely related to oncogenic macaque and human αPVs. These findings suggest that αPV-infected baboons may be useful animal models for the pathogenesis, treatment, and prophylaxis of genital αPV neoplasia. Additionally, this discovery suggests that genital αPVs with oncogenic potential may infect a wider spectrum of non-human primate species than previously thought.

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