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Owren, M.J.; Dieter, J.A.; Seyfarth, R.M.; Cheney, D.L. |
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Title |
Vocalizations of rhesus (Macaca mulatta) and Japanese (M. fuscata) macaques cross-fostered between species show evidence of only limited modification |
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Year |
1993 |
Publication |
Developmental psychobiology |
Abbreviated Journal |
Dev Psychobiol |
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26 |
Issue |
7 |
Pages |
389-406 |
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Animals; Animals, Newborn; Behavior, Animal; Discrimination Learning; Environment; Female; *Macaca; *Macaca mulatta; Male; Sound Spectrography; *Vocalization, Animal |
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Two rhesus and two Japanese macaque infants were cross-fostered between species in order to study the effects of auditory experience on vocal development. Both the cross-fostered and normally raised control subjects were observed over the first 2 years of life and their vocalizations were tape-recorded. We classified 8053 calls by ear, placed each call in one of six acoustic categories, and calculated the rates at which different call-types were used in different social contexts. Species differences were found in the use of “coo” and “gruff” vocalizations among control subjects. Japanese macaques invariably produced coos almost exclusively. In contrast, rhesus macaques produced a mixture of coos and gruffs and showed considerable interindividual variation in the relative use of one call type or the other. Cross-fostered Japanese macaques adhered to their species-typical behavior, rarely using gruffs. Cross-fostered rhesus subjects also exhibited species-typical behavior in many contexts, but in some situations produced coos and gruffs at rates that were intermediate between those shown by normally raised animals of the two species. This outcome suggests that environmentally mediated modification of vocal behavior may have occurred, but that the resulting changes were quite limited. |
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California Regional Primate Research Center, University of California, Davis |
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English |
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0012-1630 |
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PMID:8270122 |
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refbase @ user @ |
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700 |
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Author |
Neveu, P.J. |
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Title |
Brain Lateralization and Immunomodulation |
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1993 |
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International Journal of Neuroscience |
Abbreviated Journal |
Int J Neurosci |
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70 |
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1-2 |
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135-143 |
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Psychoneuroimmunology, brain lateralization |
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The two sides of the brain may be differently involved in the modulation of immune responses as demonstrated by lesional and behavioral approaches in rodents. Lesions of right or left neocortex induced opposite effects on various immune parameters including mitogen-induced lymphoproliferation, interleukin-2 production, macrophage activation or natural killer cell activity. This animal model, useful to elucidate whereby the brain and the immune system can communicate, appears to be suitable for studying the immune perturbations observed during stroke in humans. Brain asymmetry in modulation of immune reactivity may also be demonstrated in intact animal using a behavioral paradigm. The direction of a lateralized motor behavior ie paw preference in a food reaching task, correlated with an asymmetrical brain organization, was shown to be associated with lymphocyte reactivity, natural killer cell activity and auto-antibody production. The association between paw preference and immune reactivity in mice varies according to the immune parameters tested and is a sex-dependent phenomenon in which genetic background may be involved. The experimental models for investigating asymmetrical brain modulation of the immune system should be useful for studying several physiological, pathological and genetic aspects of neuroimmunomodulation. |
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Informa Clin Med |
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0020-7454 |
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doi: 10.3109/00207459309000569 |
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Equine Behaviour @ team @ |
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5778 |
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Negi,G. C. S.; Rikhari, H. C.; Ram,Jeet; Singh, S. P. |
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Title |
Foraging Niche Characteristics of Horses, Sheep and Goats in an Alpine Meadow of the Indian Central Himalaya |
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1993 |
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The Journal of Applied Ecology |
Abbreviated Journal |
J. Appl. Ecol |
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30 |
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3 |
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383-394 |
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1. Data on plant species foraged, foraging hours, bite rate, bite size and species dry matter (DM) removed per species per bite were collected in tussock grass-forb (Grass-F), forb-tussock grass (Forb-G), Trachydium-forb (Forb), Rhododendron-Cassiope and early successional communities from May to September in a moderately foraged Central Himalayan alpine meadow in order to study the foraging niche characteristics of horses, sheep and goats. 2. The three animals together grazed 30 plant species, of which 20 were grazed by horses, 22 by sheep and 16 by goats. 3. The average foraging hours (5.2-13.2), bites per minute (23-51) and mg DM per bite (59-99) for horses, sheep and goats were significantly different in different communities and months. 4. The foraging search cost, reckoned as distance walked per unit DM eaten, was highest for goats (15.4 km kg$^{-1}$), followed by sheep (8.1 km kg$^{-1}$) and horses (1.2 km kg$^{-1}$). 5. Of the total intake of horses (3.25 kg DM day$^{-1}$), the Forb community alone accounted for 40%. Sheep (0.74 kg DM day$^{-1}$) resembled horses in this respect. In contrast, the contribution of this community was negligible in the diet of goats in which the Grass-F community contributed most to the intake. 6. Forbs were the largest dietary category for all animal species. The selection ratio varied from 0.7 to 11.3 for forbs, 1.0 to 7.2 for sedges and 1.1 to 2.5 for grasses. 7. Response breadth (in terms of species grazed) was similar for horses and sheep (0.46 vs. 0.43) and somewhat wider for goats (0.49). 8. Grazing pressures below the carrying capacity of the community appeared to favour botanical diversity. |
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Equine Behaviour @ team @ |
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3545 |
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Author |
Nagell K; Olguin RS; Tomasello M |
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Processes of social learning in the tool use of chimpanzees (Pan troglodytes) and human children (Homo sapiens) |
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1993 |
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J. Comp. Psychol. |
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107 |
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174 |
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Equine Behaviour @ team @ |
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3021 |
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Author |
Murray, Martyn G.; Brown, David |
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Title |
Niche Separation of Grazing Ungulates in the Serengeti: An Experimental Test |
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Journal Article |
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Year |
1993 |
Publication |
The Journal of Animal Ecology |
Abbreviated Journal |
T. J. Anim. Ecol. |
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Volume |
62 |
Issue |
2 |
Pages |
380-389 |
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1. The niche separation of three species of alcelaphine antelope (wildebeest, topi and hartebeest) with similar body size was compared by measuring bite weight, bite rate, intake rate and selectivity of tame animals in plots containing grass at different growth stages. 2. On growing swards, hartebeest had a smaller bite weight and lower intake rate, and were also less selective of green leaf, than either topi or wildebeest. On senescent swards, hartebeest were more selective of leaf than the other two species. 3. Wildebeest had a faster bite rate than either topi or hartebeest on swards with low biomass and high protein content of green leaf (green flush). Bite weight and intake rate of wildebeest and topi were similar despite the difference in breadth of their incisor rows. 4. Topi were significantly more selective of green leaf than the other two species and were the only species to maintain a rapid bite rate on swards with high green leaf biomass. 5. The feeding experiments did not reveal significant cross-overs between species in the rate of food intake on different grass types, but each species was most proficient either in leaf selection or bite rate when feeding on grass swards in a particular growth stage. We suggest that growth stage is a primary determinant of niche separation. 6. In Serengeti, grazing ungulates which migrate are specialists of the earlier growth stages of grass which tend to be transient, while those that are residential specialize on late growth stages which are more enduring. The mobility of species, and the spatial and temporal dynamics of pastures containing different growth stages of grass, contribute to niche separation. |
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Equine Behaviour @ team @ |
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3544 |
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Author |
Mulder, R.A.; Langmore, N.E. |
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Title |
Dominant males punish helpers for temporary defection in superb fairy-wrens |
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Journal Article |
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Year |
1993 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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45 |
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830-833 |
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10.1006/anbe.1993.1100 |
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Equine Behaviour @ team @ |
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4922 |
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Author |
Mitchell R |
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Title |
Mental models of mirror self-recognition: two theories |
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1993 |
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New Ideas Psychol. |
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11 |
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211 |
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Equine Behaviour @ team @ |
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3019 |
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Author |
Mendoza, S.P.; Mason, W. A (eds) |
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Title |
Primate Social Conflict |
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1993 |
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This book examines conflict as a normal and recurrent feature of primate social life, emphasizing that the study of aggression and social conflict is important to understanding the basic processes that contribute to social order. The authors go well beyond the usual view which tends to equate social conflict with fights over food, mates, or social supremacy, and analyze the diverse manifestations and significance of conflict in a variety of case studies. Contributors are scientists with field and laboratory experience in anthropology, behavioral endocrinology, ethology, and psychology. Utilizing the growing body of research on life-span development in primatology, the authors offer more extensive analyses of the complexity of primate social relationships.
“I like the idea of social conflict as opposed to aggression as such. Too much of the focus on conflict has been on aggressive behavior, which is probably the most striking behavior observed in the field. The fact that conflict does not lead to aggression in all cases, that conflict is generally followed by some sort of reconciliation, and the consequences for fitness and future social life are important topics with respect to non-human primate society that should have considerable relevance to thinking about human social conflict.” -- Charles T. Snowdon, University of Wisconsin, Madison
William A. Mason is Research Scientist at the California Regional Primate Research Center and Professor Emeritus of Psychology at the University of California. Sally P. Mendoza is Associate Professor of Psychology and Research Scientist at the California Regional Primate Research Center.
1. Primate Social Conflict: An Overview of Sources, Forms, and Consequences
William A. Mason and Sally P. Mendoza
2. The Nature of Social Conflict: A Psycho-Ethological Perspective
William A. Mason
3. The Evolution of Social Conflict among Female Primates
Joan B. Silk
4. Social Conflict on First Encounters
Sally P. Mendoza
5. Reconciliation among Primates: A Review of Empirical Evidence and Theoretical Issues
Frans B. M. de Waal
6. Social Conflict in Adult Male Relationships in a Free-Ranging Group of Japanese Monkeys
Naosuke Itoigawa
7. The Physiology of Dominance in Stable versus Unstable Social Hierarchies
Robert M. Sapolsky
8. Temperament and Mother-Infant Conflict in Macaques: A Transactional Analysis
William A. Mason, D.D. Long, and Sally P. Mendoza
9. Impact on Foraging Demands on Conflict within Mother-Infants Dyads
Michael W. Andrews, Gayle Sunderland, and Leonard A. Rosenblum
10. Coordination and Conflict in Callicebus Social Groups
Charles R. Menzel
11. Social Conflict in Two Monogamous New World Primates: Pairs and Rivals
Gustl Anzenberger
12. Social Conflict and Reproductive Suppression in Marmoset and Tamarin Monkeys
David H. Abbott
13. Biological Antecedents of Human Aggression
Lionel Tiger
14. Conflict as a Constructive Force in Social Life
David M. Lyons
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Mendoza, S.P.;Mason, W. A |
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978-0-7914-1241-1 |
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Equine Behaviour @ team @ |
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4874 |
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Mellor, P.S. |
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Title |
African horse sickness: transmission and epidemiology |
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1993 |
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Veterinary Research |
Abbreviated Journal |
Vet Res |
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24 |
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2 |
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199-212 |
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Africa, Northern/epidemiology; African Horse Sickness/epidemiology/*transmission; African horse sickness virus/*physiology; Animals; Arachnid Vectors/microbiology; Ceratopogonidae/*microbiology; Culicidae/microbiology; Horses; Insect Vectors/*microbiology; Portugal/epidemiology; Spain/epidemiology; Ticks/microbiology |
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African horse sickness (AHS) virus causes a non-contagious, infectious, arthropod-borne disease of equines and occasionally of dogs. The virus is widely distributed across sub-Saharan African where it is transmitted between susceptible vertebrate hosts by the vectors. These are usually considered to be species of Culicoides biting midges but mosquitoes and/or ticks may also be involved to a greater or lesser extent. Periodically the virus makes excursions beyond its sub-Saharan enzootic zones but until recently does not appear to have been able to maintain itself outside these areas for more than 2-3 consecutive years at most. This is probably due to a number of factors including the apparent absence of a long term vertebrate reservoir, the prevalence and seasonal incidence of the vectors and the efficiency of control measures (vaccination and vector abatement). The recent AHS epizootics in Iberia and N Africa spanning as they do, 5 or more yr, seem to have established a new pattern in AHS virus persistence. This is probably linked to the continuous presence of adult C imicola in the area. Culicoides imicola is basically an Afro-Asiatic insect and prefers warm climates. Therefore its continuous adult presence in parts of Iberia and N Africa may be due to some recent moderations of the climate in these areas. |
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Institute for Animal Health, Pirbright Laboratory, Woking, Surrey, UK |
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0928-4249 |
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PMID:8102076 |
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Equine Behaviour @ team @ |
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2359 |
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McGlone, J.J.; Hicks, T.A. |
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Teaching standard agricultural practices that are known to be painful |
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1993 |
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Journal of Animal Science |
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J. Anim Sci. |
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71 |
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4 |
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1071-1074 |
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N1 - |
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Equine Behaviour @ team @ |
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2933 |
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