The Nature of a Primary Feeding Habit in Different Age-Sex Classes of Yellow Baboons (Papio cynocephalus)

Rhine, Ramon J.; Westlund, Bruce J.

doi:10.1159/000155855

Cited by 58 publications

(25 citation statements)

References 4 publications

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“…However, adequate data on nutrient availability in the different foods of Amboseli baboons as well as on the relative digestive efficiencies of various yellow baboon age-sex and rank classes were not available at the time of this study and, in fact, are probably still lacking even today. Thus, although our findings agree with those of Post [1978] and Rhine and Westlund [1978] that proportion of time spent feeding and bite rate do not vary systematically in relation to age, gender or rank for individuals of the J2 class or older, there may still exist important differences among these individuals in the quantity or quality of food ingested, differences whose assessment would require a much more elaborate set of techniques and analyses than those utilized in the present work.…”

Section: Discussionsupporting

confidence: 87%

Feeding Behavior of Yellow Baboons (Papio cynocephalus): Relationship to Age, Gender and Dominance Rank

Post¹,

Hausfater²,

McCuskey³

1980

IJFP

150

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This paper examines the relationship of age, gender and dominance rank to certain quantitative measures of food intake and diet among free-living Amboseli baboons (Papio cynocephalus). Adult males and adult females showed no significant difference in proportion of time spent feeding although the two classes differed markedly in body weight and hence basal metabolic rate. Among adults, individuals of high, middle and low dominance status showed no consistent differences in proportion of time spent feeding. However, within the group as a whole and among adult males, high ranking individuals generally had longer feeding bout durations than lower ranking individuals. Also, high ranking individuals were less likely to have their feeding bouts aggressively interrupted than were lower ranking individuals and those individuals whose feeding bouts were most frequently interrupted showed the lowest mean feeding bout duration. Application of the Kaplan-Meier (1958) statistical procedure to these data on feeding bout duration showed that the reduction in expected bout duration due to disruptive social factors was proportionately greater among low ranking individuals than among higher ranking individuals. Quantitative analysis of dietary overlap showed that individuals of all age-sex classes except adult males had a greater degree of overlap with members of their own class than with members of other classes. Pairs of closely-ranked individuals showed greater dietary overlap than did pairs of individuals occupying more disparate rank positions. Alternative behavioral strategies for minimizing interference from higher ranking individuals and at the same time assuring adequate food intake are discussed.

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Section: Discussionsupporting

confidence: 87%

Feeding Behavior of Yellow Baboons (Papio cynocephalus): Relationship to Age, Gender and Dominance Rank

Post¹,

Hausfater²,

McCuskey³

1980

IJFP

150

View full text Add to dashboard Cite

show abstract

“…This may involve the introduction of high strontium seasonal foods or his increasing ability to acquire difficult-toprocess food resources, such as underground plant parts, which are naturally high in strontium [Rowell, 1966;Rhine and Westlund, 1978;Rhine et al, 1985Rhine et al, , 1989Altmann, 1998;Okecha and Newton-Fisher, 2006;Paterson, 2006;Sponheimer and LeeThorp, 2006;Humphrey et al, 2008b]. In Ugandan baboons, complete cessation of suckling is reported to occur between 12 and 16 months [Rowell, 1964[Rowell, , 1966.…”

Section: Discussionmentioning

confidence: 99%

The Relationship of Accentuated Lines in Enamel to Weaning Stress in Juvenile Baboons (Papio hamadryas anubis)

Dirks¹,

Humphrey²,

Dean³

et al. 2010

IJFP

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Weaning conflict may represent an evolutionary conflict of interest between parent and offspring, an honest signal of need on the part of a weanling, or both. Accentuated lines visible in histological sections of teeth are indicators of stress during enamel formation and have been hypothesised to form in baboon teeth during weaning. We analysed growth increments in 5 tooth sections from 2 Ugandan baboons (Papio hamadryas anubis), using polarised light microscopy, to determine when stresses occurred during the weaning process. Dietary transitions were reconstructed using normalised strontium intensities (Sr/Ca) in enamel. Accentuated lines were cross-matched between teeth from the same animal and plotted by month. The highest frequency of stress was experienced at around 6 months in 1 baboon, coinciding with an inferred reduction in suckling frequency, and at 11 months in another, coinciding with the inferred cessation of suckling. Because accentuated lines appear to indicate weaning stress at dietary transitions, weaning conflict may represent an honest signal of need on the part of the weanling.

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“…Adults and young animals do not forage together, which would explain the fact that the juveniles' peripheral from the 'core' of the troop, are forced to find food for themselves and are inclined to discover novelties whereas the adults, know ing the feeding traditions because of their age and experience are restricted to eating the food that they know. This would also explain why, in baboons, adults and young do not have the same feeding techniques or the same feeding efficiency [Rhine et al, 1978]. Goodall [1973] noticed the same phenomenon in chimpanzees and asserts that young chimpanzees are typi cally more exploratory and adventurous in trying new food items.…”

Section: Discussionmentioning

confidence: 99%

A Comparative Study of Culturally Transmitted Patterns of Feeding Habits in the Chacma Baboon Papio ursinus and the Vervet Monkey Cercopithecus aethiops

Cambefort¹

1981

IJFP

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Japanese workers have studied social acquisition patterns of new feeding habits in Macaca fuscata which they have termed precultural. The present study investigates the same phenomenon in the chacma baboon and the vervet monkey in their natural habitat. The questions addressed are: (1) How a new feeding habit enters a troop and by which age and sex category, also how it is propagated? (2) When individuals are permitted with a choice between palatable and unpalatable food, can they learn by demonstration only or do they have to pass through a direct learning process? (3) Can the results from the above questions be explained by social parameters such as the social structure of the individual species? It was found that juvenile baboons discover new food and that after the discovery propagation is instantaneous. In vervets discovery is random among the age classes and propagation is slow and takes place through certain ‘pivot’ individuals. Both species fail to learn about palatability by demonstration but have to go through a direct learning process. This contrasts strongly with the forest baboon Mandrillus sphinx that have been shown to learn by demonstration. Socially, baboon juveniles stay closer to each other than the adults who force them to live at the periphery of the troop. Vervets again forage without precise sub-group formation. The link between social and cultural propagation and social structure is discussed on the basis of these findings.

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The Nature of a Primary Feeding Habit in Different Age-Sex Classes of Yellow Baboons (Papio cynocephalus)

Cited by 58 publications

References 4 publications

Feeding Behavior of Yellow Baboons (Papio cynocephalus): Relationship to Age, Gender and Dominance Rank

Feeding Behavior of Yellow Baboons (Papio cynocephalus): Relationship to Age, Gender and Dominance Rank

The Relationship of Accentuated Lines in Enamel to Weaning Stress in Juvenile Baboons (Papio hamadryas anubis)

A Comparative Study of Culturally Transmitted Patterns of Feeding Habits in the Chacma Baboon Papio ursinus and the Vervet Monkey Cercopithecus aethiops

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