| Records |
| Author |
Levy, J. |
| Title |
The mammalian brain and the adaptive advantage of cerebral asymmetry |
Type |
Journal Article |
| Year |
1977 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
| Volume |
299 |
Issue |
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Pages |
264-272 |
| Keywords |
*Adaptation, Physiological; Adaptation, Psychological/physiology; Animals; Behavior, Animal/physiology; Brain/*physiology; Cognition/physiology; Dominance, Cerebral/*physiology; *Evolution; Humans; Intelligence; Perception/physiology |
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0077-8923 |
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PMID:280207 |
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no |
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Equine Behaviour @ team @ |
Serial |
4137 |
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| Author |
Dow, M.; Ewing, A.W.; Sutherland, I. |
| Title |
Studies on the behaviour of cyprinodont fish. III. The temporal patterning of aggression in Aphyosemion striatum (Boulenger) |
Type |
Journal Article |
| Year |
1976 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
| Volume |
59 |
Issue |
3-4 |
Pages |
252-268 |
| Keywords |
*Aggression; Animals; *Behavior, Animal; Dominance-Subordination; *Fishes; Humans; Individuality; *Killifishes; Male; Time Factors |
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0005-7959 |
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| Notes |
PMID:1035107 |
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no |
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Equine Behaviour @ team @ |
Serial |
4151 |
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| Author |
Jolly, A. |
| Title |
Pair-bonding, female aggression and the evolution of lemur societies |
Type |
Journal Article |
| Year |
1998 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
| Volume |
69 Suppl 1 |
Issue |
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Pages |
1-13 |
| Keywords |
*Aggression; Animals; Evolution; Female; Intelligence; Lemur/*psychology; Male; *Pair Bond; Sex Factors; Social Dominance; Strepsirhini/psychology |
| Abstract |
Lemur societies have been described as convergent with those of anthropoids, including Papio-like female-bonded multi-male groups. Recent research, however, shows at least 5 pair-bonded species among the Lemuridae and Indriidae. Three more, Eulemur mongoz, Eulemur fulvus and Varecia variegata, have societies combining aspects of pairing with aspects of troop life. The best-known female-bonded societies, those of Lemur catta, Propithecus diadema edwardsi and Propithecus verreauxi, may be assemblages of mother-daughter dyads, capable of high aggression towards other females, but derived from more solitary female ancestors, perhaps also living as pairs. The internal structure of such lemur groups differs from the more extensive kin groups of catarrhines. This in turn may relate to the lemurs' level of social intelligence and to lemur female dominance over males. |
| Address |
Department of Ecology and Evolutionary Biology, Princeton University, N.J. 08544, USA. ajolly@princeton.edu |
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English |
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0015-5713 |
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| Notes |
PMID:9595685 |
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no |
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Equine Behaviour @ team @ |
Serial |
4179 |
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| Author |
Rudran, R. |
| Title |
Adult male replacement in one-male troops of purple-faced langurs (Presbytis senex senex) and its effect on population structure |
Type |
Journal Article |
| Year |
1973 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
| Volume |
19 |
Issue |
2 |
Pages |
166-192 |
| Keywords |
Age Factors; Aggression; Animals; *Behavior, Animal; Female; *Haplorhini; Humans; Leadership; Male; Maternal Behavior; Population Density; Sex Factors; *Social Behavior; Social Dominance |
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0015-5713 |
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| Notes |
PMID:4201908 |
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no |
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Equine Behaviour @ team @ |
Serial |
4182 |
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| Author |
Reimers, M.; Schwarzenberger, F.; Preuschoft, S. |
| Title |
Rehabilitation of research chimpanzees: stress and coping after long-term isolation |
Type |
Journal Article |
| Year |
2007 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm Behav |
| Volume |
51 |
Issue |
3 |
Pages |
428-435 |
| Keywords |
Adaptation, Psychological/*physiology; Animals; *Animals, Laboratory; Exploratory Behavior; Hydrocortisone/analysis/metabolism; Male; Models, Biological; *Pan troglodytes; Social Dominance; Social Environment; *Social Isolation/psychology; Stress/*rehabilitation/veterinary; Time |
| Abstract |
We report on the permanent retirement of chimpanzees from biomedical research and on resocialization after long-term social isolation. Our aim was to investigate to what extent behavioral and endocrine measures of stress in deprived laboratory chimpanzees can be improved by a more species-typical social life style. Personality in terms of novelty responses, social dominance after resocialization and hormonal stress susceptibility were affected by the onset of maternal separation of infant chimpanzees and duration of deprivation. Chimpanzees, who were separated from their mothers at a younger age and kept in isolation for more years appeared to be more timid personalities, less socially active, less dominant and more susceptible to stress, as compared to chimpanzees with a less severe deprivation history. However, permanent retirement from biomedical research in combination with therapeutic resocialization maximizing chimpanzees' situation control resulted in reduced fecal cortisol metabolite levels. Our results indicate that chimpanzees can recover from severe social deprivation, and may experience resocialization as less stressful than solitary housing. |
| Address |
Department of Natural Sciences, Institute of Biochemistry, University of Veterinary Medicine, Veterinarplatz 1, 1210 Vienna, Austria. reimers@wild-vet.at |
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0018-506X |
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| Notes |
PMID:17292368 |
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no |
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Equine Behaviour @ team @ |
Serial |
4188 |
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Overli, O.; Korzan, W.J.; Hoglund, E.; Winberg, S.; Bollig, H.; Watt, M.; Forster, G.L.; Barton, B.A.; OVerli, E.; Renner, K.J.; Summers, C.H. |
| Title |
Stress coping style predicts aggression and social dominance in rainbow trout |
Type |
Journal Article |
| Year |
2004 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm Behav |
| Volume |
45 |
Issue |
4 |
Pages |
235-241 |
| Keywords |
Adaptation, Psychological/physiology; Aggression/*physiology; Animals; *Dominance-Subordination; Female; *Hierarchy, Social; Hydrocortisone/blood; Individuality; Male; Matched-Pair Analysis; Oncorhynchus mykiss/*physiology; Stress/*physiopathology |
| Abstract |
Social stress is frequently used as a model for studying the neuroendocrine mechanisms underlying stress-induced behavioral inhibition, depression, and fear conditioning. It has previously been shown that social subordination may result in increased glucocorticoid release and changes in brain signaling systems. However, it is still an open question which neuroendocrine and behavioral differences are causes, and which are consequences of social status. Using juvenile rainbow trout of similar size and with no apparent differences in social history, we demonstrate that the ability to win fights for social dominance can be predicted from the duration of a behavioral response to stress, in this case appetite inhibition after transfer to a new environment. Moreover, stress responsiveness in terms of confinement-induced changes in plasma cortisol was negatively correlated to aggressive behavior. Fish that exhibited lower cortisol responses to a standardized confinement test were markedly more aggressive when being placed in a dominant social position later in the study. These findings support the view that distinct behavioral-physiological stress coping styles are present in teleost fish, and these coping characteristics influence both social rank and levels of aggression. |
| Address |
Biology Department and Neuroscience Group, University of South Dakota, Vermillion, SD 57069, USA. oyvind.overli@bio.uio.no |
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0018-506X |
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| Notes |
PMID:15053939 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4192 |
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| Author |
Taillon, J.; Cote, S.D. |
| Title |
Social rank and winter forage quality affect aggressiveness in white-tailed deer fawns |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
74 |
Issue |
2 |
Pages |
265-275 |
| Keywords |
aggressiveness; agonistic behaviour; body mass loss; dominance status; forage intake; Odocoileus virginianus; resource competition; social behaviour; white-tailed deer; winter forage quality |
| Abstract |
Achieving a high social rank may be advantageous for individuals at high population densities, because dominance status may determine the priority of access to limited resources and reduce individual loss of body mass. The establishment of dominance relationships between individuals involves variable levels of aggressiveness that can be influenced by resource availability. The relationship between social rank and aggressiveness and the impacts of resource abundance on aggressiveness are, however, poorly understood, but may be relevant to understand the mechanisms determining dominance relationships between individuals. We experimentally simulated, in seminatural enclosures, a deterioration of winter forage quality induced by a high-density deer population and examined the effects of (1) social dominance and (2) diet quality on aggressiveness, forage intake and body mass loss of white-tailed deer, Odocoileus virginianus, fawns during two winters. Within diet-quality treatments, fawns were consistently organized into linear hierarchies and showed clear dominance relationships. Dominants initiated more interactions and showed higher aggressiveness than subordinates, but subordinates had higher forage intake than dominants throughout winter. Social rank did not influence cumulative body mass loss of fawns. During both winters, fawns fed the control diet maintained their aggressiveness level, whereas fawns fed the poor-quality diet decreased it. Our experimental approach revealed that white-tailed deer responded to a reduction in winter forage quality by modifying their aggressiveness, indicating that ungulates may show plasticity not only in their foraging behaviour in response to decreased resources but also in their social behaviour. |
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no |
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Equine Behaviour @ team @ |
Serial |
4203 |
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Val-Laillet, D.; Passille, A.M. de; Rushen, J.; von Keyserlingk, M.A.G. |
| Title |
The concept of social dominance and the social distribution of feeding-related displacements between cows |
Type |
Journal Article |
| Year |
2008 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
111 |
Issue |
1-2 |
Pages |
158-172 |
| Keywords |
Cattle; Social dominance; Competitive success; Hierarchy; Feeding competition |
| Abstract |
The aim of this study was to determine the extent to which the classical properties of social dominance describe the pattern of feeder-related displacements with groups of cattle. We also compared the advantages and disadvantages of three dominance indices for describing the competitive success at the feeder. We observed displacements at the feeder within six groups of 12 lactating dairy cows over 72 h per group. We demonstrated that the cattle in our experiment established a quasi-linear hierarchy at the feeder where many dominance relationships were bi-directional (52.0 +/- 5.9%); namely, dominance relationships were significantly linear (P < 0.05 in five of the six groups) but contained many circular triads (45.0 +/- 5.6%). Dominance rank influenced the milk production (r = 0.36, P = 0.002) and the time budget of the animals: high-ranking cows were found spending more time at the feeder during the 120 min following provision of fresh food than low-ranking cows (P = 0.022), but dominance indices based on the occurrence of displacements at the feeder did not correlate with actual time spent at the feeder. The presence of numerous circular triads and bi-directional relationships suggests that the classical properties of social dominance do not correspond to the pattern of displacements that occur at feeders within small groups of cattle. Instead, the competitive success may also be affected by motivation or persistence by the animal to gain access to the food resource. |
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no |
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Equine Behaviour @ team @ |
Serial |
4213 |
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| Author |
Barette, C.; Vandal, D. |
| Title |
Social rank, dominance, antler size, and access to food in snow-bound wild woodland caribou |
Type |
Journal Article |
| Year |
1986 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
| Volume |
97 |
Issue |
1-2 |
Pages |
118-146 |
| Keywords |
Canada; Quebec; Artiodactyla; Social dominance; Feeding behavior; Morphology; Antler; Rangifer tarandus; North America; America; Ungulata; Mammalia; Vertebrata |
| Abstract |
We spent two winters studying the social behaviour of wild woodland caribou (Rangifer tarandus caribou) at a time when their main food (ground lichens; Cladina sp.) is available only at snow craters dug by the animals. The competition for access to such craters was severe, the animals constantly trying to take over the craters of others. During a two-month period when a group maintained a constant size (20) and composition (all age-sex classes represented), we could rank the animals in a rather linear dominance hierarchy (Landau's index = 0.87). Rank was correlated with access to resources, percent of time spent active, and percent of time feeding in craters. It was also correlated with age and antler size. However, rank is not an attribute of individuals, but of a relationship between individuals. As such it is only an intervening variable between physical attributes and access to resources, a variable whose value has meaning only within a given group. Among the three attributes studied (age, sex, antler size), the latter was by far the best predictor of the occurrence and outcome of interactions. Between two individuals within any of the three age-sex classes studied (adult and yearling males and adult females), the one with larger antlers initiated significantly more often, escalated its aggression (to the point of hitting the target) less often, and enjoyed a higher success rate in obtaining resources. When their antlers were larger than those of an adult male target (i.e. males that had shed their antlers), adult females won almost all their interactions with adult males even though they escalated only one fourth of them. This clarifies the long-standing speculation that female caribou have antlers and shed them later than males, in order to overcome their sexual handicap in competition for food in the winter. We conclude that the link between rank and dominance of an individual on one hand, and some of its attributes on the other (e.g. sex, age, weight, antler size) is fundamentally realized by the animal itself through its active preference for targets it is likely to beat, i.e. targets with smaller antlers. |
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Equine Behaviour @ team @ |
Serial |
4269 |
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| Author |
Nelissen, M.H.J. |
| Title |
The effect of tied rank numbers on the linearity of dominance hierarchies |
Type |
Journal Article |
| Year |
1986 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
12 |
Issue |
2 |
Pages |
159-168 |
| Keywords |
dominance hierarchy, linearity, Landau's index, despotism |
| Abstract |
The occurence of tied rank numbers in dominance hierarchies is discussed, especially its effect on the linearity of the hierarchy. This linearity is measured with Landau's index, that is calculated for several hierarchies with tied ranks on one, two of three levels. Linearity is mostly affected by ties in small groups with many ties. A distinction is made between a hierarchy of individuals and hierarchical levels. The phenomenon of despotism is called an extreme case of tied ranks. It is proposed to regard hierarchies with a linearity in a continuous scale. |
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Equine Behaviour @ team @ |
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4285 |
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