Records |
Author |
Zervanos Sm, K.R. |
Title |
Seasonal home ranges and activity patterns of feral assateague island ponies |
Type |
Conference Volume |
Year |
1979 |
Publication |
Symposium on the Ecology and Behavior of wild and feral Equids, Laramie |
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3-14 |
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from Professor Hans Klingels Equine Reference List |
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1753 |
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Author |
Berger, J, |
Title |
Social systems, resources, and phylogenetic inertia: an experimental test and its limitations |
Type |
Book Chapter |
Year |
1988 |
Publication |
Ecology of Social Behavior |
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Pages |
157-186 |
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Academic Press |
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San Diego |
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Slobochikoff, C.N. |
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Ecology of Social Behavior |
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Equine Behaviour @ team @ |
Serial |
2234 |
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Author |
Miller, R. |
Title |
Band organisation and stability in Red Desert feral horses |
Type |
Book Chapter |
Year |
1979 |
Publication |
Proceedings of a Conference on the Ecology and Behavior of Feral Equids |
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Pages |
113-123 |
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University of Wyoming. |
Place of Publication |
Laramie |
Editor |
R.H. Denniston |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Equine Behaviour @ team @ |
Serial |
2361 |
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Author |
Poletaeva, I.I.; Popova, N.V.; Romanova, L.G. |
Title |
Genetic aspects of animal reasoning |
Type |
Journal Article |
Year |
1993 |
Publication |
Behavior Genetics |
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Volume |
23 |
Issue |
5 |
Pages |
467-475 |
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Abstract |
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 @ |
Serial |
3089 |
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Author |
Warren-Smith, A.K.; Greetham, L.; McGreevy, P.D. |
Title |
Behavioral and physiological responses of horses (Equus caballus) to head lowering |
Type |
Journal Article |
Year |
2007 |
Publication |
Journal of Veterinary Behavior: Clinical Applications and Research |
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Volume |
2 |
Issue |
3 |
Pages |
59-67 |
Keywords |
behavior; head lowering; heart rate; horse; training |
Abstract |
Horse trainers often report that lowering the height of a horse's head so the poll is below the height of the withers can induce a calming effect during training. Four groups of horses were used in a 2-part study to investigate the behavioral and physiological effects of head lowering in horses. In Part 1, Group A had no experimental stimuli applied and horses in Group B were trained to lower their heads when presented with a specific stimulus by the handler. The stimulus for head lowering was the application of downward pressure on the headcollar via the lead rope until the horse lowered its head such that its lips were approximately at mid-cannon (third metacarpal) height, whereupon the pressure was released. The stimulus was applied again if the horse raised its head during the 300-second test period. In Part 2, Groups C and D were aroused until their heart rates exceeded 100 beats per minute (bpm). Group C had no further experimental stimuli applied whereas Group D lowered their heads as a response to the above stimulus for a period of 300 seconds. Repeated measures analysis showed that there was no difference between the heart rate of Groups A and B or Groups C and D but that the heart rate of Groups A and B were lower than Groups C and D during the 300-second post-arousal (P < 0.001). The horses in Groups A and B were more likely to contact the handler (P < 0.001), exhibit licking and chewing (P < 0.001), rest a hindleg (P < 0.001), and sniff the ground (P < 0.001) than those in Groups C and D. The number of stimuli required to maintain the head in a lowered position was greatest during the first 30 seconds (P = 0.012 and P < 0.001, Parts 1 and 2, respectively). The current study has shown that head lowering in horses does not influence cardiac responses, even after the horses had been aroused to have their heart rates above 100 bpm. Therefore, it is not a method that will aid in calming an aroused horse in training. Contrary to popular belief, there was no association with licking-and-chewing and head lowering, nor with these behaviors and response acquisition. |
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Equine Behaviour @ team @ |
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4201 |
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Koolhaas, J.M.; Korte, S.M.; De Boer, S.F.; Van Der Vegt, B.J.; Van Reenen, C.G.; Hopster, H.; De Jong, I.C.; Ruis, M.A.W.; Blokhuis, H.J. |
Title |
Coping styles in animals: current status in behavior and stress-physiology |
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Journal Article |
Year |
1999 |
Publication |
Neuroscience & Biobehavioral Reviews |
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23 |
Issue |
7 |
Pages |
925-935 |
Keywords |
Coping; Aggression; Stress; Disease; Corticosterone |
Abstract |
This paper summarizes the current views on coping styles as a useful concept in understanding individual adaptive capacity and vulnerability to stress-related disease. Studies in feral populations indicate the existence of a proactive and a reactive coping style. These coping styles seem to play a role in the population ecology of the species. Despite domestication, genetic selection and inbreeding, the same coping styles can, to some extent, also be observed in laboratory and farm animals. Coping styles are characterized by consistent behavioral and neuroendocrine characteristics, some of which seem to be causally linked to each other. Evidence is accumulating that the two coping styles might explain a differential vulnerability to stress mediated disease due to the differential adaptive value of the two coping styles and the accompanying neuroendocrine differentiation. |
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Equine Behaviour @ team @ |
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4416 |
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Author |
McGreevy, P.D.; McLean, A.N. |
Title |
Roles of learning theory and ethology in equitation |
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Journal Article |
Year |
2007 |
Publication |
Journal of Veterinary Behavior: Clinical Applications and Research |
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2 |
Issue |
4 |
Pages |
108-118 |
Keywords |
ethological training; equine ethnology; equitation; horse behavior; learning theory |
Abstract |
By definition, ethology is primarily the scientific study of animal behavior, especially as it occurs in a natural environment; applied ethology being the study of animal behavior in the human domain. The terms equine ethology and ethological training are becoming commonplace in the equestrian domain, yet they seem to be used with a conspicuous lack of clarity and with no mention of learning theory. Most of what we do to train horses runs counter to their innate preferences. This article summarizes the ethological challenges encountered by working horses and considers the merits and limitations of ethological solutions. It also questions the use of terms such as “alpha” and “leader” and examines aspects of learning theory, equine cognition, and ethology as applied to horse training and clinical behavior modification. We propose 7 training principles that optimally account for the horse's ethological and learning abilities and maintain maximal responsivity in the trained horse. These principles can be summarized as: (1) use learning theory appropriately; (2) train easy-to-discriminate signals; (3) train and subsequently elicit responses singularly; (4) train only one response per signal; (5) train all responses to be initiated and subsequently completed within a consistent structure; (6) train persistence of current operantly conditioned responses; and (7) avoid and disassociate flight responses. Adherence to these principles and incorporating them into all horse training methodologies should accelerate training success, reduce behavioral wastage of horses, and improve safety for both humans and horses. |
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Equine Behaviour @ team @ |
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4511 |
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Apfelbach, R.; Blanchard, C.D.; Blanchard, R.J.; Hayes, R.A.; McGregor, I.S. |
Title |
The effects of predator odors in mammalian prey species: A review of field and laboratory studies |
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Journal Article |
Year |
2005 |
Publication |
Neuroscience and Biobehavioral Reviews |
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29 |
Issue |
8 |
Pages |
1123-1144 |
Keywords |
Behavioral suppression; Defensive behavior; Endocrine effects; Neural effects; Predator odor; Small mammals |
Abstract |
Prey species show specific adaptations that allow recognition, avoidance and defense against predators. For many mammalian species this includes sensitivity towards predator-derived odors. The typical sources of such odors include predator skin and fur, urine, feces and anal gland secretions. Avoidance of predator odors has been observed in many mammalian prey species including rats, mice, voles, deer, rabbits, gophers, hedgehogs, possums and sheep. Field and laboratory studies show that predator odors have distinctive behavioral effects which include (1) inhibition of activity, (2) suppression of non-defensive behaviors such as foraging, feeding and grooming, and (3) shifts to habitats or secure locations where such odors are not present. The repellent effect of predator odors in the field may sometimes be of practical use in the protection of crops and natural resources, although not all attempts at this have been successful. The failure of some studies to obtain repellent effects with predator odors may relate to (1) mismatches between the predator odors and prey species employed, (2) strain and individual differences in sensitivity to predator odors, and (3) the use of predator odors that have low efficacy. In this regard, a small number of recent studies have suggested that skin and fur-derived predator odors may have a more profound lasting effect on prey species than those derived from urine or feces. Predator odors can have powerful effects on the endocrine system including a suppression of testosterone and increased levels of stress hormones such as corticosterone and ACTH. Inhibitory effects of predator odors on reproductive behavior have been demonstrated, and these are particularly prevalent in female rodent species. Pregnant female rodents exposed to predator odors may give birth to smaller litters while exposure to predator odors during early life can hinder normal development. Recent research is starting to uncover the neural circuitry activated by predator odors, leading to hypotheses about how such activation leads to observable effects on reproduction, foraging and feeding. © 2005 Elsevier Ltd. All rights reserved. |
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School of Psychology, University of Sydney, Sydney, NSW 2006, Australia |
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Equine Behaviour @ team @ |
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4565 |
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Ostner, J.; Heistermann, M.; Schülke, O. |
Title |
Dominance, aggression and physiological stress in wild male Assamese macaques (Macaca assamensis) |
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2008 |
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Hormones and Behavior |
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54 |
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5 |
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613-619 |
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Social stress; Dominance; Aggression; Fecal glucocorticoid excretion; Male bonds; Assamese macaques |
Abstract |
In group-living animals relative rank positions are often associated with differences in glucocorticoid output. During phases of social stability, when dominance positions are clear and unchallenged, subordinates often face higher costs in terms of social stress than dominant individuals. In this study we test this prediction and examine additional potential correlates of stress, such as reproductive season, age and amount of aggression received in wild, seasonally breeding Assamese macaques (Macaca assamensis). During a mating and a non-mating season we collected 394 h of focal observational data and 440 fecal samples of six adult and six large subadult males living in a multimale-multifemale group in their natural habitat in northeastern Thailand. The mating season was characterized by a general increase in aggressive behavior and glucocorticoid excretion across all males compared to the non-mating season. Among adult males, mating season glucocorticoid levels were significantly negatively related with dominance rank and positively with the amount of aggression received. Both relationships were non-significant among large subadult males. Thus, our results suggest that in adult Assamese macaques a high dominance position is not associated with high costs. Low costs of dominance might be induced by strong social bonds among top-ranking males, which exchange frequent affiliative interactions and serve as allies in coalitionary aggression against potentially rank-challenging subordinate males. |
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0018-506x |
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Equine Behaviour @ team @ |
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4694 |
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Author |
Joynson, R. B. |
Title |
Towards understanding relationships, by Robert A. Hinde. London: Academic, 1979, pp xii + 367 |
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1981 |
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Aggressive Behavior |
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7 |
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3 |
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275-280 |
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Equine Behaviour @ team @ |
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4813 |
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