| Records |
| Author |
Russon AE; Galdikas BMF |
Title  |
Imitation in free-ranging rehabilitant orangutans (Pongo pygmaeus) |
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Journal Article |
| Year |
1993 |
Publication |
J. Comp. Psychol. |
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107 |
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147 |
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Equine Behaviour @ team @ |
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3036 |
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| Author |
Feh, C.; de Mazières, J. |
| Title |
Grooming at a preferred site reduces heart rate in horses |
Type |
Journal Article |
| Year |
1993 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
46 |
Issue |
6 |
Pages |
1191-1194 |
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| Abstract |
Abstract. It is commonly suggested that the principal function of allogrooming is to reduce social tension between group members, but direct evidence of the physiological consequences of grooming at particular sites is lacking. By filming allogrooming sequences in a herd of Camargue horses, Equus caballus , their preferred grooming site, which lies on the lower neck, was identified. Experimental imitation of grooming at this site reduced the heart rate of the recipient while grooming on a non-preferred area did not, in both adults and foals. This preferred site lies close to a major ganglion of the autonomic nervous system. |
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2020 |
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| Author |
Poletaeva, I.I.; Popova, N.V.; Romanova, L.G. |
| Title |
Genetic aspects of animal reasoning |
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Journal Article |
| Year |
1993 |
Publication |
Behavior Genetics |
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| Volume |
23 |
Issue |
5 |
Pages |
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 |
Dougherty, D.M.; Lewis, P. |
| Title |
Generalization of a tactile stimulus in horses |
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Journal Article |
| Year |
1993 |
Publication |
Journal of the Experimental Analysis of Behavior |
Abbreviated Journal |
J Exp Anal Behav |
| Volume |
59 |
Issue |
3 |
Pages |
521-528 |
| Keywords |
Animals; Behavior, Animal; Female; *Horses; Male; Reinforcement (Psychology); *Touch |
| Abstract |
Using horses, we investigated the control of operant behavior by a tactile stimulus (the training stimulus) and the generalization of behavior to six other similar test stimuli. In a stall, the experimenters mounted a response panel in the doorway. Located on this panel were a response lever and a grain dispenser. The experimenters secured a tactile-stimulus belt to the horse's back. The stimulus belt was constructed by mounting seven solenoids along a piece of burlap in a manner that allowed each to provide the delivery of a tactile stimulus, a repetitive light tapping, at different locations (spaced 10.0 cm apart) along the horse's back. Two preliminary steps were necessary before generalization testing: training a measurable response (lip pressing) and training on several reinforcement schedules in the presence of a training stimulus (tapping by one of the solenoids). We then gave each horse two generalization test sessions. Results indicated that the horses' behavior was effectively controlled by the training stimulus. Horses made the greatest number of responses to the training stimulus, and the tendency to respond to the other test stimuli diminished as the stimuli became farther away from the training stimulus. These findings are discussed in the context of behavioral principles and their relevance to the training of horses. |
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Human Behavioral Pharmacology Laboratory, University of Texas Health Science Center, Houston 77030 |
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English |
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0022-5002 |
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PMID:8315368 |
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Equine Behaviour @ team @ |
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3571 |
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Negi,G. C. S.; Rikhari, H. C.; Ram,Jeet; Singh, S. P. |
| Title |
Foraging Niche Characteristics of Horses, Sheep and Goats in an Alpine Meadow of the Indian Central Himalaya |
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Journal Article |
| Year |
1993 |
Publication |
The Journal of Applied Ecology |
Abbreviated Journal |
J. Appl. Ecol |
| Volume |
30 |
Issue |
3 |
Pages |
383-394 |
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| Abstract |
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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Dugatkin, L.A.; Godin, J.-G.J. |
| Title |
Female mate copying in the guppy (Poecilia reticulata): age-dependent effects |
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Journal Article |
| Year |
1993 |
Publication |
Behavioral Ecology |
Abbreviated Journal |
Behav. Ecol. |
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4 |
Issue |
4 |
Pages |
289-292 |
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mate choice, copying, guppy, Poecilia reticulata |
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Virtually all studies of mate choice to date have assumed that females choose mates independent of one another. Social cues, however, such as the mate choice of conspecifics, may also play an important role in such decisions. Previous work has shown that female guppies of similar age copy each other's choice of mates. Here we examine the effect of relative age on mate choice copying in the guppy, Poecilia reticulata, and examine whether younger individuals are more likely to copy the mate choice of older conspecifics than vice versa. Results indicate that younger females copy the mate choice of older females, but older individuals do not appear to be influenced by the mate choice of younger individuals. |
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Equine Behaviour @ team @ |
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2181 |
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| Author |
Barton, R.A.; Whiten, A. |
| Title |
Feeding competition among female olive baboons, Papio anubis |
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Journal Article |
| Year |
1993 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
46 |
Issue |
4 |
Pages |
777-789 |
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Abstract. Competition for food is thought to play a key role in the social organization of group-living female primates, leading to the prediction that individual foraging success will be partly regulated by dominance relationships. Among adult females in a group of free-ranging olive baboons, dominance rank was significantly correlated with nutrient acquisition rates (feeding rates and daily intakes), but not with dietary diversity or quality, nor with activity budgets. The mean daily food intake of the three highest-ranking females was 30% greater than that of the three lowest-ranking females, providing an explanation for relationships between female rank and fertility found in a number of other studies of group-living primates. The intensity of feeding competition, as measured by supplant rates and spatial clustering of individuals, increased during the dry season, a period of low food availability, seemingly because foods eaten then were more clumped in distribution than those eaten in the wet season. Implications for models of female social structure and maximum group size are discussed. |
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Equine Behaviour @ team @ |
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4258 |
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Mal, M.E.; McCall, C.A.; Newland, C.; Cummins, K.A. |
| Title |
Evaluation of a one-trial learning apparatus to test learning ability in weanling horses |
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Journal Article |
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1993 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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35 |
Issue |
4 |
Pages |
305-311 |
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Fourteen Arabian foals were used to determine if a one-trial appetitive conditioning task, developed for laboratory rats, could be adapted for use in equine learning research. The learning apparatus consisted of a 1.5 m x 0.6 m wooden grid containing 40 compartments. Seven foals received a complete learning test which consisted of placing a foal in a pen with the learning apparatus on one wall, recording the foal's behavior for 5 min and then placing a food reinforcer in a target compartment (TC). After location of the food, the foal's behavior was recorded for an additional 5 min. Total visits made to the apparatus and compartments visited by the foal were recorded. The remaining seven foals received a test in which no reinforcer was placed in the TC. These foals were re-tested the next day with reinforcement. After location of the food reinforcer, all foals exhibited more visits to the apparatus, visits to the TC, visits one compartment from the TC, and visits greater than one and less than or equal to two compartments from the TC (P<0.05). Mean distance of visits from the TC decreased after location of the reinforcer (P<0.05). Increased frequency of visits to the apparatus and concentration of visits around the TC after finding the reinforcer suggest that foals had learned the location of the reinforcer. Results suggest that a one-trial appetitive conditioning test may be applicable in equine learning research. |
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Equine Behaviour @ team @ |
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3688 |
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Budzinsky, M.; Soltys, L; Wawiorko, J. |
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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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| Author |
Shah Nv, |
| Title |
Ecology of wild ass in Little Rann of Kutch |
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Manuscript |
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1993 |
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Doctoral thesis |
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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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