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Author McClure, S.R.; Chaffin, M.K. openurl 
  Title Self-mutilative behavior in horses Type Journal Article
  Year 1993 Publication (up) Journal of the American Veterinary Medical Association Abbreviated Journal J Am Vet Med Assoc  
  Volume 202 Issue 2 Pages 179-180  
  Keywords Animals; *Behavior, Animal; *Horse Diseases; Horses; Male; *Self Mutilation  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0003-1488 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:8428817 Approved no  
  Call Number refbase @ user @ Serial 1944  
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Author Dougherty, D.M.; Lewis, P. doi  openurl
  Title Generalization of a tactile stimulus in horses Type Journal Article
  Year 1993 Publication (up) 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.  
  Address Human Behavioral Pharmacology Laboratory, University of Texas Health Science Center, Houston 77030  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0022-5002 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:8315368 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3571  
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Author Lieberman, D. openurl 
  Title Type Book Whole
  Year 1993 Publication (up) Learning, Behaviour and Cognition, 2nd Ed. Abbreviated Journal  
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  Notes Cited By (since 1996): 8; Export Date: 21 October 2008 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4525  
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Author Capela, R.; Sousa, C.; Pena, I.; Caeiro, V. openurl 
  Title Preliminary note on the distribution and ecology of Culicoides imicola in Portugal Type Journal Article
  Year 1993 Publication (up) Medical and Veterinary Entomology Abbreviated Journal Med Vet Entomol  
  Volume 7 Issue 1 Pages 23-26  
  Keywords Animals; *Ceratopogonidae; Ecology; Population Density; Portugal  
  Abstract Data on Culicoides imicola were obtained during studies carried out during the recent outbreak of African horse sickness in Portugal. The previous most northerly published record of C. imicola in Portugal was 38 degrees 40'N (Pegoes). In the present work the geographical distribution of this species is extended to the parallel of 41 degrees 17'N. We have also confirmed the continuous presence of adult C. imicola in Southern Portugal (Alentejo and Algarve) throughout the year. In the laboratory we obtained this species from a sample of cattle faeces and from another of soil contaminated with animal excreta. In relation to host association 57.37% of C. imicola were trapped in the vicinity of pigsties. Finally, we collected 11,463 Culicoides of which 12.47% were C. imicola.  
  Address Departamento de Zoologia e Antropologia, Universidade de Lisboa, Portugal  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0269-283X ISBN Medium  
  Area Expedition Conference  
  Notes PMID:8435485 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2666  
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Author Parelli, P. openurl 
  Title Type Book Whole
  Year 1993 Publication (up) Natural Horsemanship Abbreviated Journal  
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  Notes Cited By (since 1996): 5; Export Date: 21 October 2008 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4538  
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Author Mitchell R openurl 
  Title Mental models of mirror self-recognition: two theories Type Journal Article
  Year 1993 Publication (up) New Ideas Psychol. Abbreviated Journal  
  Volume 11 Issue Pages 211  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3019  
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Author Roper, K.L.; Zentall, T.R. openurl 
  Title Directed forgetting in animals Type Journal Article
  Year 1993 Publication (up) Psychological bulletin Abbreviated Journal Psychol Bull  
  Volume 113 Issue 3 Pages 513-532  
  Keywords Animals; Behavior, Animal; *Cognition; Columbidae; Conditioning (Psychology); Discrimination Learning; Female; Humans; Male; Memory Disorders/*psychology; Reinforcement (Psychology); Task Performance and Analysis  
  Abstract Directed-forgetting research with animals suggests that animals show disrupted test performance only under certain conditions. Important variables are (a) whether during training, the cue to forget (F cue) signals nonreward (i.e., that the trial is over) versus reward (i.e., that reinforcement can be obtained) and (b) given that reinforcement can be obtained on F-cue trials, whether the post-F-cue response pattern is compatible with the baseline memory task. It is proposed that some findings of directed forgetting can be attributed to trained response biases, whereas others may be attributable perhaps to frustration-produced interference. It is suggested that directed forgetting in animals should be studied using procedures similar to those used to study directed forgetting in humans. This can be accomplished by presenting, within a trial, both to-be-remembered and to-be-forgotten material.  
  Address Department of Psychology, University of Kentucky, Lexington 40506  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0033-2909 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:8316612 Approved no  
  Call Number refbase @ user @ Serial 259  
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Author Herbert, T.B.; Cohen, S. url  openurl
  Title Stress and immunity in humans: a meta-analytic review Type Journal Article
  Year 1993 Publication (up) Psychosomatic Medicine Abbreviated Journal  
  Volume 55 Issue 4 Pages  
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  Abstract : This article presents a meta-analysis of the literature on stress and immunity in humans. The primary analyses include all relevant studies irrespective of the measure or manipulation of stress. The results of these analyses show substantial evidence for a relation between stress and decreases in functional immune measures (proliferative response to mitogens and natural killer cell activity). Stress is also related to numbers and percent of circulating white blood cells, immunoglobulin levels, and antibody titers to herpesviruses. Subsequent analyses suggest that objective stressful events are related to larger immune changes than subjective self-reports of stress, that immune response varies with stressor duration, and that interpersonal events are related to different immune outcomes than nonsocial events. We discuss the way neuroendocrine mechanisms and health practices might explain immune alteration following stress, and outline issues that need to be investigated in this area. Copyright (C) 1993 by American Psychosomatic Society  
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  ISSN 0033-3174 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ 00006842-199307000-00004 Serial 5995  
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Author Murray, Martyn G.; Brown, David doi  openurl
  Title Niche Separation of Grazing Ungulates in the Serengeti: An Experimental Test Type Journal Article
  Year 1993 Publication (up) The Journal of Animal Ecology Abbreviated Journal T. J. Anim. Ecol.  
  Volume 62 Issue 2 Pages 380-389  
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  Abstract 1. The niche separation of three species of alcelaphine antelope (wildebeest, topi and hartebeest) with similar body size was compared by measuring bite weight, bite rate, intake rate and selectivity of tame animals in plots containing grass at different growth stages. 2. On growing swards, hartebeest had a smaller bite weight and lower intake rate, and were also less selective of green leaf, than either topi or wildebeest. On senescent swards, hartebeest were more selective of leaf than the other two species. 3. Wildebeest had a faster bite rate than either topi or hartebeest on swards with low biomass and high protein content of green leaf (green flush). Bite weight and intake rate of wildebeest and topi were similar despite the difference in breadth of their incisor rows. 4. Topi were significantly more selective of green leaf than the other two species and were the only species to maintain a rapid bite rate on swards with high green leaf biomass. 5. The feeding experiments did not reveal significant cross-overs between species in the rate of food intake on different grass types, but each species was most proficient either in leaf selection or bite rate when feeding on grass swards in a particular growth stage. We suggest that growth stage is a primary determinant of niche separation. 6. In Serengeti, grazing ungulates which migrate are specialists of the earlier growth stages of grass which tend to be transient, while those that are residential specialize on late growth stages which are more enduring. The mobility of species, and the spatial and temporal dynamics of pastures containing different growth stages of grass, contribute to niche separation.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3544  
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Author Negi,G. C. S.; Rikhari, H. C.; Ram,Jeet; Singh, S. P. doi  openurl
  Title Foraging Niche Characteristics of Horses, Sheep and Goats in an Alpine Meadow of the Indian Central Himalaya Type Journal Article
  Year 1993 Publication (up) 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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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3545  
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