| 1. |
Foraging Synchrony in a Group of Yakushima Macaques (Macaca fuscata yakui) |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 167-179
Naoki Agetsuma,
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摘要:
The synchrony of behaviour among individuals in a group of Yakushima macaques was evaluated in relation to group size and food resources. The degree of synchrony was greater when the group was small (5–8 individuals) than when it was large (15–19 individuals). Diet did not affect the degree of synchrony. However, the duration of the ‘active phase’, in which most members of the group synchronized feeding and moving, was shorter when they fed mostly on fruit and seeds (fruit- and seed-eating season) than when they fed mostly on leaves and fallen seeds (leaf- and fallen-seed-eating season). When the group was large, the monkeys ranged over a greater area and foraged in fewer trees during the fruit- and seed-eating season than during the leaf- and fallen-seed-eating season. However, this tendency was not so clear when the group was small. These results suggest that the extent to which the distribution of food resources determines patterns of foraging increases with group size and that monkeys in a larger group reduce levels of intragroup food competition in order to obtain sufficie
ISSN:0015-5713
DOI:10.1159/000156850
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 2. |
Hand, Mouth and Eye Preferences in the Common Marmoset (Callithrix jacchus) |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 180-191
M.A. Hook-Costigan,
L.J. Rogers,
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摘要:
Motor and sensory preferences were measured for 8 common marmosets (Callithrix jacchus). Three types of motor function were examined: spontaneous feeding, mouth use when chewing and visuospatial reaching. Eye preference was used as an index of sensory lateralization. The marmosets displayed individual preferences for the performance of the motor tasks, but no group biases were revealed. Correlations between preferences displayed on the motor tests suggest that one hemisphere may control spontaneous feeding and lateralized mouth use while the other controls visuospatial reaching, but no consistent preference was present. In an eye preference test, 7 subjects displayed right-eye preferences, suggesting hemispheric specialisation for this function.
ISSN:0015-5713
DOI:10.1159/000156851
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 3. |
Do Subordinate FemaleCallimicoDisperse from Their Social Groups? |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 192-195
Scott M. Hardie,
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ISSN:0015-5713
DOI:10.1159/000156852
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 4. |
Preliminary Observations on the Ecology of Forest Cercopithecidae in the Lokofe-lkomaloki Region (Ikela, Zaire) |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 196-200
Carmen Maté,
Montserrat Colell,
Mateo Escobar,
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ISSN:0015-5713
DOI:10.1159/000156853
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 5. |
Maternal Responsiveness to Infant Distress Calls in Stumptail Macaques |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 201-206
Dario Maestripieri,
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ISSN:0015-5713
DOI:10.1159/000156854
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 6. |
Coercion-Defence Hypothesis: The Evolution of Primate Sociality |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 207-214
Aiyn R. Brereton,
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ISSN:0015-5713
DOI:10.1159/000156855
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 7. |
Variability of Trace Element Content in Permanent Teeth of Macaca mulatta -Two Different Populations |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 215-217
Henryk Głą;b,
Krzysztof Szostek,
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ISSN:0015-5713
DOI:10.1159/000156856
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 8. |
Electromyography of 15 Limb Muscles in Japanese Macaques (Macaca fuscata) during Vertical Climbing |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 218-224
Eishi Hirasaki,
Hiroo Kumakura,
Shozo Matano,
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ISSN:0015-5713
DOI:10.1159/000156857
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 9. |
Sperm Length and Sperm Competition in Primates: A Rebuttal of Criticism |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 225-230
Eduardo R.S. Roldan,
Montserrat Gomendio,
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ISSN:0015-5713
DOI:10.1159/000156858
出版商:S. Karger AG
年代:1995
数据来源: Karger
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| 10. |
Author Index Vol. 64, 1995 |
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Folia Primatologica,
Volume 64,
Issue 4,
1995,
Page 231-231
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ISSN:0015-5713
DOI:10.1159/000156859
出版商:S. Karger AG
年代:1995
数据来源: Karger
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