A Statistical Analysis of Selected Aspects of Primate Demography, Ecology, and Social Behavior

Jorde, L. B.; Spuhler, J. N.

doi:10.1086/jar.30.3.3629844

Cited by 23 publications

(11 citation statements)

References 33 publications

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“…Similar relationships between body weight (in solitary or pair-living species) or group weight and home range or territory size have been found in several vertebrate groups including birds (Armstrong, 1965 ;Schoener, 1968), small mammals (McNab, 1963) and smaller samples of primates (Jorde & Spuhler, 1974;Milton & May, 1976). The first three studies differed from this one in being primarily concerned with animals living either in pairs or in individual home ranges.…”

Section: Ymurmentioning

confidence: 79%

“…As in the case of home range size, many differences in day range length are probably related to variation in food density. On energetic grounds, it would be predicted that day range length would be positively related to feeding group weight, that terrestrial species would have longer ranges than arboreal ones and that frugivores would have longer ranges than folivores (see Jorde & Spuhler, 1974). The absence of any significant correlation between group weight and day range length in folivores is puzzling but may be the product of the small number of genera involved.…”

Section: Day Range Lengthmentioning

confidence: 99%

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Primate ecology and social organization

Clutton‐Brock,

Harvey

1977

Journal of Zoology

990

266

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Estimates of body weight, group size, home range size, day range length, socionomic sex ratio and sexual dimorphism are compared between 100 primate species, allocated to seven ecological categories. As would be predicted on energetic grounds, home range size and day range length are positively related to group weight and are greater in frugivores than in folivores; population density is negatively related to body weight; and group size is positively related to body weight. The adaptive significance of Variation in body size, sexual dimorphism and socionomic sex ratio is also discussed.

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Section: Ymurmentioning

confidence: 79%

Section: Day Range Lengthmentioning

confidence: 99%

Primate ecology and social organization

Clutton‐Brock,

Harvey

1977

Journal of Zoology

990

266

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“…The cost of predation in terms of loss of fitness is also greater for forest species than for those that live in savannas, because they have a longer potential life span (cf., ROWELL & RICHARDS, 1979). Groups of forest species tend to be smaller than those of savanna species (JORDE & SPUHLER, 1974;CLUTTON-BROCK & HARVEY, 1977). Because competition for food is also likely to influence group size, this does not prove that predation risk is much smaller in forests, although it strongly suggests it.…”

Section: Discussionmentioning

confidence: 99%

Party size and early detection of predators in sumatran forest primates

et al. 1983

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ABSTRACT. Theoretical considerations suggest that the ability to detect the presence or approach of a predator when there is still enough time to flee (early detection) should improve with group size, if group living is to be advantageous for individual non-human primates. The hypothesis that the distance at which forest primates detect predators increases with the size of their party was confirmed by observation. It was found that in addition to party size height (vegetation density) could also influence detection distance. Because height relates not only to visibility but also to the number of potential predators, one would predict that small parties are found higher in the canopy to compensate for the increased risk of predation. This prediction was confirmed using data on long-tailed macaques (Macaca fascicularis).The correlation found between party size and predation risk demonstrates that forest monkeys can adjust their behaviour in response to changes in predation risk, and hence support the hypothesis that predation risk has been an important, perhaps even the only, selective force responsible for the evolution of group living in non-human primates.

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“…Jorde and Spuhler, 1974;Spuhler and Jorde, 1975;Milton and May, 1976; and H a r v e y , 1977a,b; H a r v ey et a t in press] is dependent upon the publication of the results of quantitative field studies. Further, since intra-specific variation in behaviour and ecology is known to occur in several primate species [e.g.…”

Section: Introductionmentioning

confidence: 99%

The Diet and Feeding Behaviour of Cercopithecus aethiops tantalus

Kavanagh¹

1978

IJFP

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The feeding behaviour of representative groups of tantalus monkeys (Cercopithecus aethiops tantalus) was observed during 1974–1975 in three habitats in Cameroon. Observations took place during the wet and dry seasons in sahelian savannah, guinea savannah and farmed forest. The tantalus monkeys were similar to other races of C.aethiops that have been studied in that they were omnivorous and lacked any narrow specialisations of either diet or feeding techniques. The dietary range was similar in all three habitats, although considerable seasonal variation occurred. About one third of all feeding took place on the ground.

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A Statistical Analysis of Selected Aspects of Primate Demography, Ecology, and Social Behavior

Cited by 23 publications

References 33 publications

Primate ecology and social organization

Primate ecology and social organization

Party size and early detection of predators in sumatran forest primates

The Diet and Feeding Behaviour of Cercopithecus aethiops tantalus

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