| Records |
| Author |
Ninomiya, S. |
| Title |
Social leaning and stereotypy in horses |
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Journal Article |
| Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
76 |
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22-23 |
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refbase @ user @ |
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620 |
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Leaver, L.; Hopewell, L.; Caldwell, C.; Mallarky, L. |
| Title |
Audience effects on food caching in grey squirrels (Sciurus carolinensis): evidence for pilferage avoidance strategies |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
1 |
Pages |
23-27 |
| Keywords |
Caching – Deception – Pilferage – Grey squirrels – Sciurus carolinensis |
| Abstract |
Abstract If food pilferage has been a reliable selection pressure on food caching animals, those animals should have evolved the ability to protect their caches from pilferers. Evidence that animals protect their caches would support the argument that pilferage has been an important adaptive challenge. We observed naturally caching Eastern grey squirrels (Sciurus carolinensis) in order to determine whether they used any evasive tactics in order to deter conspecific and heterospecific pilferage. We found that grey squirrels used evasive tactics when they had a conspecific audience, but not when they had a heterospecific (corvid) audience. When other squirrels were present, grey squirrels spaced their caches farther apart and preferentially cached when oriented with their backs to other squirrels, but no such effect was found when birds were present. Our data provide the first evidence that caching mammals are sensitive to the risk of pilferage posed by an audience of conspecifics, and that they utilise evasive tactics that should help to minimise cache loss. We discuss our results in relation to recent theory of reciprocal pilferage and compare them to behaviours shown by caching birds. |
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Admin @ knut @ |
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4223 |
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| Author |
Cooper, J.J. |
| Title |
Equine learning behaviour: Common knowledge and systematic research |
Type |
Journal Article |
| Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
76 |
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24-26 |
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no |
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refbase @ user @ |
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630 |
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| Author |
McCall, C.A. |
| Title |
Making equine learning research applicable to training procedures |
Type |
Journal Article |
| Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
76 |
Issue |
1 |
Pages |
27-28 |
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refbase @ user @ |
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623 |
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| Author |
Lee, C.M.; Ryan, J.J.; Kreiner, D.S. |
| Title |
Personality in domestic cats |
Type |
Journal Article |
| Year |
2007 |
Publication |
Psychological Reports |
Abbreviated Journal |
Psychol Rep |
| Volume |
100 |
Issue |
1 |
Pages |
27-29 |
| Keywords |
Animals; Animals, Domestic/*psychology; *Behavior, Animal; Cats/*psychology; Humans; *Personality |
| Abstract |
Personality ratings of 196 cats were made by their owners using a 5-point Likert scale anchored by 1: not at all and 5: a great deal with 12 items: timid, friendly, curious, sociable, obedient, clever, protective, active, independent, aggressive, bad-tempered, and emotional. A principal components analysis with varimax rotation identified three intepretable components. Component I had high loadings by active, clever, curious, and sociable. Component II had high loadings by emotional, friendly, and protective, Component III by aggressive and bad-tempered, and Component IV by timid. Sex was not associated with any component, but age showed a weak negative correlation with Component I. Older animals were rated less social and curious than younger animals. |
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Department of Psychology, 1111 Lovinger, Central Missouri State University, Warrensburg, MO 64093, USA |
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English |
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0033-2941 |
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PMID:17450998 |
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no |
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Equine Behaviour @ team @ |
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4103 |
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| Author |
Hall, C. |
| Title |
The impact of visual perception on equine learning |
Type |
Journal Article |
| Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
76 |
Issue |
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Pages |
29-33 |
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no |
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refbase @ user @ |
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619 |
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| Author |
Alves, C.; Chichery, R.; Boal, J.G.; Dickel, L. |
| Title |
Orientation in the cuttlefish Sepia officinalis: response versus place learning |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
1 |
Pages |
29-36 |
| Keywords |
Animals; *Decapodiformes; Exploratory Behavior; *Maze Learning; Memory; *Space Perception |
| Abstract |
Several studies have demonstrated that mammals, birds and fish use comparable spatial learning strategies. Unfortunately, except in insects, few studies have investigated spatial learning mechanisms in invertebrates. Our study aimed to identify the strategies used by cuttlefish (Sepia officinalis) to solve a spatial task commonly used with vertebrates. A new spatial learning procedure using a T-maze was designed. In this maze, the cuttlefish learned how to enter a dark and sandy compartment. A preliminary test confirmed that individual cuttlefish showed an untrained side-turning preference (preference for turning right or left) in the T-maze. This preference could be reliably detected in a single probe trial. In the following two experiments, each individual was trained to enter the compartment opposite to its side-turning preference. In Experiment 1, distal visual cues were provided around the maze. In Experiment 2, the T-maze was surrounded by curtains and two proximal visual cues were provided above the apparatus. In both experiments, after acquisition, strategies used by cuttlefish to orient in the T-maze were tested by creating a conflict between the formerly rewarded algorithmic behaviour (turn, response learning) and the visual cues identifying the goal (place learning). Most cuttlefish relied on response learning in Experiment 1; the two strategies were used equally often in Experiment 2. In these experiments, the salience of cues provided during the experiment determined whether cuttlefish used response or place learning to solve this spatial task. Our study demonstrates for the first time the presence of multiple spatial strategies in cuttlefish that appear to closely parallel those described in vertebrates. |
| Address |
Laboratoire de Physiologie du Comportement des Cephalopodes, Universite de Caen, Esplanade de la Paix, 14032, Caen cedex, France |
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English |
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1435-9448 |
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PMID:16794852 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2461 |
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Kraft, C.N.; Urban, N.; Ilg, A.; Wallny, T.; Scharfstadt, A.; Jager, M.; Pennekamp, P.H. |
| Title |
[Influence of the riding discipline and riding intensity on the incidence of back pain in competitive horseback riders] |
Type |
Journal Article |
| Year |
2007 |
Publication |
Sportverletzung Sportschaden : Organ der Gesellschaft fur Orthopadisch-Traumatologische Sportmedizin |
Abbreviated Journal |
Sportverletz Sportschaden |
| Volume |
21 |
Issue |
1 |
Pages |
29-33 |
| Keywords |
Adolescent; Adult; Aged; Animals; Child; Female; Horses; Humans; Incidence; Low Back Pain/diagnosis/*epidemiology/etiology; Male; Middle Aged; Pain Measurement; Questionnaires; Risk Factors; *Sports/physiology |
| Abstract |
INTRODUCTION: The connection between morphologic changes of the spine and the intensity of training has been assessed for a number of sport activities. The influence of horseback riding on the spine has only rarely been evaluated. The aim of our study was to evaluate to what degree horseback riders suffer from back pain and whether there is an association between this parameter and the category i. e. the intensity of horseback riding. Furthermore we wanted to judge whether riding may have a positive effect on pre-existent back pain. METHODS: 508 horseback riders (63.2 % females; 36.8 % males) competing in either dressage, showjumping or vaulting were interviewed using a questionnaire. Apart from biometric data, the intensity with which riding was performed and the localisation and intensity (VAS) of back pain was assessed. Furthermore, in the case of existing back pain, riders were asked whether different riding disciplines and paces changed the intensity of pain. RESULTS: 300 dressage riders (59.1 %), 188 showjumpers (37.0 %) and 20 vaulters (3.9 %) with an average age of 33.5 Jahre (12 – 77 years) were questioned. The incidence of back pain was 72.5 %. A significant correlation between back pain and riding discipline respectively gender or riding level could not be found. Discrepancies in VAS-score for dressage riders (3.95 +/- 0.13), show jumpers (4.10 +/- 0.16) and vaulters (3.76 +/- 0.5) were marginal and not significant (p > 0.05). Overall 58.7 % resp. 15.2 % reported to have pain in the lumbar i.e cervical spine. Despite the fact that a large fraction of dressage riders claimed to have problems in these spine areas with 57.7 % resp. 68.8 %, this finding was not significant compared to the other riding disciplines. While 61.6 % of dressage riders reported an improvement of their back pain when riding, this was only the case in 40.9 % of show jumpers. CONCLUSION: Compared to the general population, a high incidence of back pain is found among riders. A significant correlation between the intensity of riding or the riding discipline and frequency or severity of back pain could not be found. For riders with pre-existent back pain the pace “walk” seems to have a positive influence on pain intensity. |
| Address |
Klinik und Poliklinik fur Orthopadie, Heinrich-Heine-Universitat, Dusseldorf. clayton.kraft@med.uni-duesseldorf.de |
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German |
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Original Title |
Einfluss der Reitdisziplin und -intensitat auf die Inzidenz von Ruckenschmerzen bei Reitsportlern |
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0932-0555 |
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| Notes |
PMID:17385102 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
3706 |
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Meral, Y.; Cakiroglu, D.; Sancak, A.A.; Cyftcy, G.; Karabacak, A. |
| Title |
Relationships between serum serotonin and serum lipid levels, and aggression in horses |
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Journal Article |
| Year |
2007 |
Publication |
DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
| Volume |
114 |
Issue |
1 |
Pages |
30-32 |
| Keywords |
*Aggression; Animals; Behavior, Animal/*physiology; Case-Control Studies; Female; Horses/*blood; Lipids/*blood; Male; Serotonin/*blood |
| Abstract |
Levels of serum serotonin and serum lipids--triglyceride, total cholesterol, low-density lipoprotein, high-density lipoprotein and very low-density lipoprotein, were determined in normal horses and horses diagnosed with aggression on the basis of a questionnaire survey. Blood serotonin levels in aggressive horses were found to be significantly lower than in non-aggressive horses (P < 0.01), but no association was found with respect to blood lipids. |
| Address |
Department of Internal Diseases, Faculty of Veterinary Medicine, University of Ondokuz Mayis, Samsun, Turkey. ymeral@omu.edu.t |
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English |
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0341-6593 |
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PMID:17252934 |
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no |
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1835 |
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King, S.R.B.; Gurnell, J. |
| Title |
Scent-marking behaviour by stallions: an assessment of function in a reintroduced population of Przewalski horses (Equus ferus przewalskii) |
Type |
Journal Article |
| Year |
2007 |
Publication |
Journal of Zoology |
Abbreviated Journal |
J Zool |
| Volume |
272 |
Issue |
1 |
Pages |
30-36 |
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| Abstract |
Abstract Scent marking is a common form of intraspecific communication in mammal species, and using faeces or urine is a cost-effective way of signalling competitive ability and resource holding power. Marking is ritually performed by male equids, and here we assess the function of male scent-marking behaviour in a recently introduced population of Przewalski horses Equus ferus przewalskii in Mongolia. Two forms of scent marking were observed: defecation on stud piles formed from repeated dunging in the same place, and overmarking of faeces and urine of mares. Stud piles were marked with dung by the harem holder and sniffed before and after dung was deposited. They were not found specifically at the periphery of harem ranges but occurred for the most part along routes used by the horses, and were more common in the core parts of harem ranges or where harem ranges overlapped. Thus, rather than being used to defend range boundaries, stud piles were placed predominantly where they would be encountered by male intruders. Mare excreta were covered with urine by the stallion, but were only sniffed before they were marked, not after. These marks appear to advertise to the mare and other, intruding stallions that the harem holder was the mare's consort and that the interloper should not risk trying to steal the mare or sneak a mating. Thus, the two forms of marking by harem holders appear to combine as first and second lines of defence of paternity rights in male intrasexual competition. |
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Equine Behaviour @ team @ King2007 |
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2315 |
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