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Title |
Wolves in Europe: status and perspectives |
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1993 |
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Munich Wildlife Society |
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Ettal, Germany |
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Equine Behaviour @ team @ ref8 |
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6449 |
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Author |
Schuhmann K, |
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Title |
Untersuchung zur Sozialstruktur des persischen Wildesels |
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1993 |
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Doctoral thesis |
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Freiburg |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1578 |
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Shah Nv, |
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Title |
Ecology of wild ass in Little Rann of Kutch |
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1993 |
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Baroda University, India. |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1587 |
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Poletaeva, I.I.; Popova, N.V.; Romanova, L.G. |
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Title |
Genetic aspects of animal reasoning |
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1993 |
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Behavior Genetics |
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23 |
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5 |
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467-475 |
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This paper reviews the investigations of Prof. L. V. Krushinsky and his colleagues into the genetics of complex behaviors in mammals. The ability of animals to extrapolate the direction of a food stimulus movement was investigated in wild and domesticated foxes (including different fur-color mutants), wild brown rats, and laboratory rats and mice. Wild animals (raised in the laboratory) were shown to be superior to their respective domesticated forms on performance of the extrapolation task, especially in their scores for the first presentation, in which no previous experience could be used. Laboratory rats and mice demonstrated a low level of extrapolation performance. This means that only a few laboratory animals were capable of solving the task, i.e., the percentage of correct solutions was equivalent to chance. The brain weight selection program resulted in two mice strains with a 20% (90-mg) difference in brain weight. Ability to solve the extrapolation task was present in low-brain weight mice in generations 7-11 but declined with further selection. Investigation of extrapolation ability in mice with different chromosomal anomalies demonstrated that animals with Robertsonian translocations Rb(8,17) 1lem and Rb(8,17) 6Sic were capable of solving this task in a statistically significant majority of cases, while mice with fusion of other chromosomes, as well as CBA normal karyotype mice, performed no better than expected by chance. Mice with two types of partial trisomies and animals homo- and heterozygous for translocations were also tested. Although mice with T6 trisomy performed no better than expected by chance, animals with trisomy for a chromosome 17 fragment solved the task successfully. Thus, a genetic component underlying the ability to solve the extrapolation task was demonstrated in three animal species. The extrapolation task in animals is considered to reveal a general capacity for elementary reasoning. The genetic basis of this capacity is very complex. |
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Equine Behaviour @ team @ |
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3089 |
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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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Budzinsky, M.; Soltys, L; Wawiorko, J. |
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Title |
Estimate of excitability of half bred horses |
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1993 |
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43 Annual meeting FEZ. Madrid |
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Equine Behaviour @ team @ |
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5020 |
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Herbert, T.B.; Cohen, S. |
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Stress and immunity in humans: a meta-analytic review |
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1993 |
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Psychosomatic Medicine |
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55 |
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4 |
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: This article presents a meta-analysis of the literature on stress and immunity in humans. The primary analyses include all relevant studies irrespective of the measure or manipulation of stress. The results of these analyses show substantial evidence for a relation between stress and decreases in functional immune measures (proliferative response to mitogens and natural killer cell activity). Stress is also related to numbers and percent of circulating white blood cells, immunoglobulin levels, and antibody titers to herpesviruses. Subsequent analyses suggest that objective stressful events are related to larger immune changes than subjective self-reports of stress, that immune response varies with stressor duration, and that interpersonal events are related to different immune outcomes than nonsocial events. We discuss the way neuroendocrine mechanisms and health practices might explain immune alteration following stress, and outline issues that need to be investigated in this area. Copyright (C) 1993 by American Psychosomatic Society |
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0033-3174 |
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Equine Behaviour @ team @ 00006842-199307000-00004 |
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5995 |
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Author |
Genov, P.W.; Kostava, V. |
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Untersuchungen zur zahlenmäßigen Stärke des Wolfes und seiner Einwirkung auf die Haustierbestände in Bulgarien |
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1993 |
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Zeitschrift für Jagdwissenschaft |
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39 |
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4 |
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217-223 |
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Die Untersuchung wurde in der Zeitspanne von 1984 bis 1988 durchgeführt. Es wurden die Protokolle des Staatlichen Versicherungsinstituts benutzt, die Angaben für Raubüberfälle von Wölfen auf Haustiere beinhalten (Tabelle 1). Außerdem wurden Angaben über die während dieser Zeitspanne erlegten Wölfe zusammengefaßt. Die Abschußzahlen lauten: 1984 – 163, 1985 – 147, 1986 – 179, 1987 – 211 und 1988 – 220 Tiere. Die Anzahl der in den einzelnen Gebirgen lebenden Wölfe wurde nach einer Umfrage festgestellt. Für die in Betracht kommenden Gebirge werden folgende Bestandszahlen angenommen: Rhodopen -- 60-80 Individuen, 189 bis 264 km2 pro Tier, Rila- und Piringebirge -- 60-80 Tiere, 109 bis 145 km2 pro Tier, Ossogowo-Belassiza Gebirgssystem -- 40-50 Individuen, 57-70 km2 pro Tier, West- und Mittelbalkan -- 35-38 Wölfe, 200 km2 pro Tier. Dazu kommen noch 10-15 Wölfe im Flußbecken von Beli Lom und etwa 20 Exemplare in Strandscha- und Sakargebirge. Insgesamt lebten in Bulgarien im Jahre 1988 etwa 260-330 Wölfe (Abb. 1). |
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1439-0574 |
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Equine Behaviour @ team @ Genov1993 |
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6686 |
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Author |
Ratzlaff, M.H.; Wilson, P.D.; Hyde, M.L.; Balch, O.K.; Grant, B.D. |
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Title |
Relationship between locomotor forces, hoof position and joint motion during the support phase of the stride of galloping horses |
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Journal Article |
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Year |
1993 |
Publication |
Acta Anatomica |
Abbreviated Journal |
Acta Anat (Basel) |
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146 |
Issue |
2-3 |
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200-204 |
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Animals; Equipment Design; Hoof and Claw/*physiology; Horses/*physiology; Joints/*physiology; *Locomotion; Motor Activity/*physiology; Physiology/instrumentation; *Posture; Shoes; Transducers |
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Abstract |
Three methods were used simultaneously to determine the relationships between the vertical forces exerted on the hooves and the positions of the limbs and hooves at the times of peak vertical forces from 2 horses galloping on a track straightaway. Vertical forces were recorded from an instrumented shoe, fetlock joint motion was measured with an electrogoniometer and the angles of the carpus, fetlock and hoof were determined from slow-motion films. At hoof contact, the mean angles of the carpus and fetlock were 181-182 degrees and 199-206 degrees, respectively. Peak vertical forces on the heel occurred at or near maximum extension of the carpal and fetlock joints. Peak forces on the toe occurred during flexion of the fetlock joint and at mean hoof angles of 28-31 degrees from the horizontal. The mean angles of the hoof from the horizontal at the time of heel contact were 6-7 degrees. Hoof lift occurred at mean carpal angles of 173-174 degrees and mean fetlock angles of 199-200 degrees. |
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Department of Veterinary and Comparative Anatomy, Pharmacology and Physiology, College of Veterinary Medicine, Washington State University, Pullman 99164-6520 |
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0001-5180 |
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PMID:8470468 |
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refbase @ user @ |
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1945 |
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Author |
Colahan, P.; Lindsey, E.; Nunier, C. |
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Determination of the center of pressure of the hoofs of the forelimbs of horses standing on a flat level surface |
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1993 |
Publication |
Acta Anatomica |
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Acta Anat (Basel) |
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146 |
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2-3 |
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175-178 |
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Animals; Forelimb/*physiology; Hoof and Claw/*physiology; Horses/*physiology; *Posture; Pressure |
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The pressure exerted on a flat level surface by recently trimmed, unshod hoofs of the front limbs of 23 sound, adult horses was measured using pressure-sensitive film and a specially built cassette. The horses were tranquilized and stood with one foot on the 2.9-cm-thick cassette and the other on a block of equal height. The hoofs were observed for motion during the measurement, and the developed film was examined for improper alignment of the film or slipping of the hoof. The center of pressure was located using the method of weighted proportions of Barrey. This static measurement system with a long measurement time and the number of measurements reduced the influence of variables inherent in the horses' behavior and the measuring system. The calculated point was recorded as falling medial to, lateral to or on a line bisecting the central sulcus of the frog. In the dorsal to palmar orientation the point was classified with reference to a line drawn halfway between the most dorsal and the most palmar mark on the film. Forty-six percent of the calculated centers of pressure were located in the medial heel area. Binomial analysis for large samples indicates that this was a significant variation from a random distribution. Seventy-six percent of the centers were located in or on the borders of the medial heel. |
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College of Veterinary Medicine, University of Florida, Gainesville 32608-0136 |
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0001-5180 |
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Notes |
PMID:8470462 |
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refbase @ user @ |
Serial |
1946 |
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