| Records |
| Author |
Khalil, A.M.; Kaseda, Y. |
| Title |
Behavioral patterns and proximate reason of young male separation in Misaki feral horses |
Type |
Journal Article |
| Year |
1997 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
54 |
Issue |
4 |
Pages |
281-289 |
| Keywords |
Misaki feral horse; Horse maternal-filial bond; Social behavior; Separation season; Separation reason |
| Abstract |
The present investigation was undertaken to study the proximate reasons why and the behavioral patterns of young male Misaki feral horses when they left their natal band or mothers. We observed a total of ten young males twice a month from January 1988 to December 1995. Almost all young males left their natal band or mothers at between 1 and 4 years of age. We found that, during the separation process, all the young males from first parity dams returned several times after the initial separation, indicating a strong attachment between primiparous mares and their male offspring. The other five separated only once without rejoining. Our observations showed five variable behavior patterns of young males at separation time, depending on the consort relation between their mothers and harem stallion and the reason for separation at that time. Eight young males separated in the non-breeding season at average 2.1 years and the other two separated in the breeding season at average 3 years and the average difference was not significant. These results revealed that 80% of the young males separated voluntarily when the natural resources become poor whereas 20% separated when their siblings were born. |
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Equine Behaviour @ team @ |
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2209 |
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| Author |
Delacour, J. |
| Title |
Object Perception and Recognition: A Model for the Scientific Study of Consciousness |
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Journal Article |
| Year |
1997 |
Publication |
Theory Psychology |
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| Volume |
7 |
Issue |
2 |
Pages |
257-262 |
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| Abstract |
The main obstacles to the scientific study of consciousness are its subjectivity and its complexity. Object perception and recognition (OPR) can be a useful model in such a study because there is a remarkable agreement between the subjective and objective aspects of OPR; in addition, while OPR is somewhat simpler than other forms of cognition, it adequately represents one characteristic feature of consciousness: intentionality. It thus allows convergent studies of experimental psychology, artificial intelligence and biology, in both humans and animals. Recent advances in the neurophysiology of visual OPR in subhuman primates and its brain imaging in humans provide a vital thread to the neural basis of consciousness, especially of its integrative, unifying character. |
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10.1177/0959354397072007 |
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Equine Behaviour @ team @ |
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2967 |
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| Author |
Anderson JR; Gallup GG |
| Title |
Self-recognition in Saguinus? A critical essay |
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Journal Article |
| Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
54 |
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1563 |
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2978 |
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Bugnyar T; Huber L |
| Title |
Push or pull: an experimental study on imitation in marmosets |
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Journal Article |
| Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
54 |
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817 |
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Equine Behaviour @ team @ |
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2984 |
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| Author |
Hauser MD; Kralik J |
| Title |
Life beyond the mirror: a reply to Anderson & Gallup |
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Journal Article |
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1997 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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54 |
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1568 |
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Equine Behaviour @ team @ |
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3002 |
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| Author |
Inoue-Nakamura N; Matsuzawa T |
| Title |
Development of stone tool use by wild chimpanzees (Pan troglodytes) |
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Journal Article |
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1997 |
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J. Comp. Psychol. |
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111 |
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159 |
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Equine Behaviour @ team @ |
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3009 |
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| Author |
Povinelli DJ; Gallup GG; Eddy TJ; Bierschwale DT; Engstrom MC |
| Title |
Chimpanzees recognize themselves in mirrors |
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Journal Article |
| Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
53 |
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1083 |
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Equine Behaviour @ team @ |
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3029 |
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| Author |
Hauser MD |
| Title |
Artifactual kinds and functional design features: what a primate understands without language |
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Journal Article |
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1997 |
Publication |
Cognition |
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64 |
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285 |
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Equine Behaviour @ team @ |
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3064 |
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| Author |
Bekoff M. |
| Title |
Deep Ethology, Animal Rights, and the Great Ape/Animal Project: Resisting Speciesism and Expanding the Community of Equals |
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Journal Article |
| Year |
1997 |
Publication |
Journal of Agricultural and Environmental Ethics |
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10 |
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269-296 |
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refbase @ user @ |
Serial |
3470 |
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| Author |
Holmstrom, M.; Drevemo, S. |
| Title |
Effects of trot quality and collection on the angular velocity in the hindlimbs of riding horses |
Type |
Journal Article |
| Year |
1997 |
Publication |
Equine Veterinary Journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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23 |
Pages |
62-65 |
| Keywords |
Animals; Femur/physiology; Gait/*physiology; Hindlimb/*physiology; Horses/*physiology; Locomotion/*physiology; Male; Movement/physiology; Statistics; Time Factors |
| Abstract |
The angular velocities of the hindlimb angles of 14 horses, including 6 Grand Prix dressage horses, 4 horses judged as good at the trot and 4 horses judged as poor, were analysed. The horse material was the same as previously used by Holmstrom (1994) in studies on conformation and trotting gaits in the Swedish Warmblood riding horse. Four consecutive strides of each horse and the corresponding pace were analysed and mean velocity curves (Xh) for each angle were calculated. Before calculation the data were filtered forwards and backwards with a Butterworth third order filter with a cut off frequency of 60 Hz. During the last 60% of the stance phase there were differences between the horses judged as good and poor at the trot in all the analysed hindlimb angles except the femur inclination. The angular velocity in the hock joint, pelvis inclination and hindlimb pendulation was larger in the good horses. The angular velocity of the hindlimb pendulation decreased with collection in the Grand Prix horses. During parts of the stance phase, there was also a gradual decrease in the femur angular velocity from trot at hand to piaffe. In the hock joint, there was no difference in angular velocity between trot at hand and passage during the last 30%. The higher compression of the hock angle and pelvic angle to the horizontal plane probably reflects a higher compression of the whole hindlimb. It probably contributes to the greater springiness in the movements of good young horses and Grand Prix dressage horses. The results from the present study confirmed the importance of storing elastic strain energy for the quality of the dressage horse gaits. |
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Dept. of Anatomy and Histology, Swedish University of Agricultural Science, Uppsala |
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English |
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PMID:9354292 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3736 |
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