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Author |
Griffin, A.S. |
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Title |
Socially acquired predator avoidance: Is it just classical conditioning? |
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Journal Article |
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Year |
2008 |
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Brain Research Bulletin |
Abbreviated Journal |
Special Issue:Brain Mechanisms, Cognition and Behaviour in Birds |
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76 |
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3 |
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264-271 |
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Learning; Classical (Pavlovian) conditioning; Social learning; Ecological specialization; General process theory; Ecology; Predation; Backward conditioning |
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Abstract |
Associative learning theories presume the existence of a general purpose learning process, the structure of which does not mirror the demands of any particular learning problem. In contrast, learning scientists working within an Evolutionary Biology tradition believe that learning processes have been shaped by ecological demands. One potential means of exploring how ecology may have modified properties of acquisition is to use associative learning theory as a framework within which to analyse a particular learning phenomenon. Recent work has used this approach to examine whether socially transmitted predator avoidance can be conceptualised as a classical conditioning process in which a novel predator stimulus acts as a conditioned stimulus (CS) and acquires control over an avoidance response after it has become associated with alarm signals of social companions, the unconditioned stimulus (US). I review here a series of studies examining the effect of CS/US presentation timing on the likelihood of acquisition. Results suggest that socially acquired predator avoidance may be less sensitive to forward relationships than traditional classical conditioning paradigms. I make the case that socially acquired predator avoidance is an exciting novel one-trial learning paradigm that could be studied along side fear conditioning. Comparisons between social and non-social learning of danger at both the behavioural and neural level may yield a better understanding of how ecology might shape properties and mechanisms of learning. |
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0361-9230 |
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Equine Behaviour @ team @ |
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4697 |
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Author |
Dreier, S.; van Zweden, J.S.; D'Ettorre, P. |
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Title |
Long-term memory of individual identity in ant queens |
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Journal Article |
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Year |
2007 |
Publication |
Biology Letters |
Abbreviated Journal |
Biol Lett |
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3 |
Issue |
5 |
Pages |
459-462 |
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Aggression; Animals; Ants/*physiology; Conditioning, Operant; Evolution; Female; *Memory; *Recognition (Psychology); Social Dominance |
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Abstract |
Remembering individual identities is part of our own everyday social life. Surprisingly, this ability has recently been shown in two social insects. While paper wasps recognize each other individually through their facial markings, the ant, Pachycondyla villosa, uses chemical cues. In both species, individual recognition is adaptive since it facilitates the maintenance of stable dominance hierarchies among individuals, and thus reduces the cost of conflict within these small societies. Here, we investigated individual recognition in Pachycondyla ants by quantifying the level of aggression between pairs of familiar or unfamiliar queens over time. We show that unrelated founding queens of P. villosa and Pachycondyla inversa store information on the individual identity of other queens and can retrieve it from memory after 24h of separation. Thus, we have documented for the first time that long-term memory of individual identity is present and functional in ants. This novel finding represents an advance in our understanding of the mechanism determining the evolution of cooperation among unrelated individuals. |
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Institute of Biology, Department of Population Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark. sdreier@bi.ku.dk |
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1744-9561 |
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PMID:17594958 |
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Equine Behaviour @ team @ |
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4649 |
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Henderson, A.J.Z. |
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Title |
Don't fence me in: managing psychological well being for elite performance horses |
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Journal Article |
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Year |
2007 |
Publication |
Journal of Applied Animal Welfare Science : JAAWS |
Abbreviated Journal |
J. Appl. Anim. Welf. Sci. |
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10 |
Issue |
4 |
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309-329 |
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*Animal Husbandry; Animal Welfare; Animals; *Behavior, Animal; Horses/*psychology; *Physical Conditioning, Animal; *Stereotyped Behavior |
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This article posits that stereotypical behavior patterns and the overall psychological well being of today's performance horse could be substantially enhanced with care that acknowledges the relationship between domesticated horses and their forerunners. Feral horses typically roam in stable, social groups over large grazing territories, spending 16-20 hr per day foraging on mid- to poor-quality roughage. In contrast, today's elite show horses live in relatively small stalls, eat a limited-but rich-diet at specific feedings, and typically live in social isolation. Although the horse has been domesticated for more than 6000 years, there has been no selection for an equid who no longer requires an outlet for these natural behaviors. Using equine stereotypies as a welfare indicator, this researcher proposes that the psychological well being of today's performance horse is compromised. Furthermore, the article illustrates how minimal management changes can enhance horses' well being while still remaining compatible with the requirements of the sport-horse industry. The article discusses conclusions in terms of Fraser, Weary, Pajor, and Milligan's “integrative welfare model” (1997). |
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Department of Psychology, Simon Fraser University, Burnaby, British Columbia, Canada. zamoyska@shaw.ca |
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1088-8705 |
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PMID:17970632 |
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Equine Behaviour @ team @ |
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4363 |
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Author |
Turner, K.K.; Nielsen, B.D.; O'Connor, C.I.; Burton, J.L. |
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Bee pollen product supplementation to horses in training seems to improve feed intake: A pilot study |
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Journal Article |
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Year |
2006 |
Publication |
Journal of Animal Physiology and Animal Nutrition |
Abbreviated Journal |
J Anim Physiol Anim Nutr (Berl) |
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90 |
Issue |
9-10 |
Pages |
414-420 |
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*Animal Nutrition Physiology; Animals; Antibody Formation; Bees; Detergents; Dietary Fiber/metabolism; Dietary Supplements; *Digestion; Eating/*drug effects; Exercise Test/veterinary; Female; Heart Rate/drug effects/physiology; Horses/blood/immunology/*physiology; Leukocyte Count/*veterinary; Male; Oxygen Consumption/drug effects/physiology; Physical Conditioning, Animal/*physiology; Pilot Projects; *Pollen; Random Allocation |
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The objective of this study was to determine the efficacy of supplementation of Dynamic Trio 50/50, a bee pollen-based product, to improve physical fitness, blood leukocyte profiles, and nutritional variables in exercised horses. Ten Arabian horses underwent a standardised exercise test (SET), then were pair-matched by sex and fitness and randomly assigned to BP (receiving 118 g of Dynamic Trio 50/50 daily) or CO (receiving 73 g of a placebo) for a period of 42 days. A total collection was conducted from days 18 to 21 on six geldings to determine nutrient retention and neutral detergent fibre (NDF) and acid detergent fibre (ADF) digestibility. Horses were exercise conditioned and completed another SET on day 42. V160 and V200 were calculated from SET heart rates (HR). Lactate, glucose, haematocrit (HT) and haemoglobin (HB) concentrations were determined from SET blood samples. Total leukocyte count, and circulating numbers of various leukocytes and IgG, IgM and IgA concentrations were determined in rest and recovery blood samples from both SETs. Geldings on BP (n = 3) ate more feed than CO. BP had less phosphorus excretion, and tended to retain more nitrogen. BP tended to digest more NDF and ADF while having lower NDF digestibility and tending to have lower ADF digestibility. No treatment differences existed for V160 and V200, HR, lactate, HT and HB. There was a trend for lymphocyte counts to be lower in BP than CO on day 42. Dynamic Trio 50/50 supplementation may have a positive effect on performance by helping horses in training meet their potentially increased nutrient demands by increasing feed intake and thus nutrient retention. |
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Department of Animal Science, Michigan State University, East Lansing, MI 48824, USA. kturner@uga.edu |
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0931-2439 |
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PMID:16958799 |
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Equine Behaviour @ team @ |
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4237 |
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Author |
Boughner, R.L.; Papini, M.R. |
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Title |
Appetitive latent inhibition in rats: preexposure performance does not predict conditioned performance |
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Journal Article |
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Year |
2006 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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72 |
Issue |
1 |
Pages |
42-51 |
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Animals; *Appetitive Behavior; Association Learning; *Conditioning, Classical; *Habituation, Psychophysiologic; Individuality; *Inhibition (Psychology); Male; Motivation; Rats; Rats, Wistar; *Reaction Time |
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Nonreinforced preexposure to a conditioned stimulus impairs subsequent conditioning with that stimulus. The goal of these studies was to assess the extent to which acquisition performance could be predicted from preexposure performance using a correlational approach. For both preexposure and autoshaping, four measures of performance were computed, including overall average lever pressing, lever pressing in the initial session, percentage change in lever pressing, and slopes. These measures were correlated in a large sample of rats trained in an autoshaping situation. None of the three measures of autoshaping performance was consistently predicted by any of the three measures of preexposure performance. These results are consistent with the view that latent inhibition is not reducible to long-term habituation. |
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Department of Psychology, Texas Christian University, TX 76129, United States |
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0376-6357 |
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PMID:16406375 |
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Equine Behaviour @ team @ |
Serial |
4147 |
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Author |
Neuringer, A. |
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Title |
Reinforced variability in animals and people: implications for adaptive action |
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Journal Article |
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Year |
2004 |
Publication |
The American Psychologist |
Abbreviated Journal |
Am Psychol |
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59 |
Issue |
9 |
Pages |
891-906 |
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Animals; Behavior, Animal; *Choice Behavior; Conditioning, Operant; Creativeness; Discrimination (Psychology); Humans; Memory; Problem Solving; *Reinforcement (Psychology) |
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Although reinforcement often leads to repetitive, even stereotyped responding, that is not a necessary outcome. When it depends on variations, reinforcement results in responding that is diverse, novel, indeed unpredictable, with distributions sometimes approaching those of a random process. This article reviews evidence for the powerful and precise control by reinforcement over behavioral variability, evidence obtained from human and animal-model studies, and implications of such control. For example, reinforcement of variability facilitates learning of complex new responses, aids problem solving, and may contribute to creativity. Depression and autism are characterized by abnormally repetitive behaviors, but individuals afflicted with such psychopathologies can learn to vary their behaviors when reinforced for so doing. And reinforced variability may help to solve a basic puzzle concerning the nature of voluntary action. |
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Department of Psychology, Reed College, Portland, OR 97202, USA. allen.neuringer@reed.edu |
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0003-066X |
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PMID:15584823 |
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Equine Behaviour @ team @ |
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4106 |
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Author |
Matzke, S.M.; Oubre, J.L.; Caranto, G.R.; Gentry, M.K.; Galbicka, G. |
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Title |
Behavioral and immunological effects of exogenous butyrylcholinesterase in rhesus monkeys |
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Journal Article |
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Year |
1999 |
Publication |
Pharmacology, Biochemistry, and Behavior |
Abbreviated Journal |
Pharmacol Biochem Behav |
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62 |
Issue |
3 |
Pages |
523-530 |
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Animals; Antibody Formation/drug effects; Behavior, Animal/*drug effects; Butyrylcholinesterase/*immunology/pharmacokinetics/*pharmacology; Cognition/drug effects; Color Perception/drug effects; Conditioning, Operant/drug effects; Discrimination Learning/drug effects; Half-Life; Horses; Humans; Macaca mulatta; Male |
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Although conventional therapies prevent organophosphate (OP) lethality, laboratory animals exposed to such treatments typically display behavioral incapacitation. Pretreatment with purified exogenous human or equine serum butyrylcholinesterase (Eq-BuChE), conversely, has effectively prevented OP lethality in rats and rhesus monkeys, without producing the adverse side effects associated with conventional treatments. In monkeys, however, using a commercial preparation of Eq-BuChE has been reported to incapacitate responding. In the present study, repeated administration of commercially prepared Eq-BuChE had no systematic effect on behavior in rhesus monkeys as measured by a six-item serial probe recognition task, despite 7- to 18-fold increases in baseline BuChE levels in blood. Antibody production induced by the enzyme was slight after the first injection and more pronounced following the second injection. The lack of behavioral effects, the relatively long in vivo half-life, and the previously demonstrated efficacy of BuChE as a biological scavenger for highly toxic OPs make BuChE potentially more effective than current treatment regimens for OP toxicity. |
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Walter Reed Army Institute of Research, Washington, DC 20307-5100, USA |
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English |
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0091-3057 |
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PMID:10080246 |
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Equine Behaviour @ team @ |
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4064 |
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Author |
Elsaesser, F.; Klobasa, F.; Ellendorff, F. |
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Title |
ACTH stimulation test for the determination of salivary cortisol and of cortisol responses as markers of the training status/fitness of warm-blooded sports horses] |
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Journal Article |
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Year |
2001 |
Publication |
DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
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Volume |
108 |
Issue |
1 |
Pages |
31-36 |
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Adrenocorticotropic Hormone/*diagnostic use; Animals; Health; Horses/*physiology; Hydrocortisone/*analysis/*secretion; Male; Orchiectomy; *Physical Conditioning, Animal; Running; Saliva/*chemistry; Walking |
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Previous work (Marc et al., 2000) suggested that plasma cortisol responses to treadmill exercise or ACTH injection are a reliable marker for performance evaluation in warmblood horses. For practical purposes blood sample collections and treadmill exercise tests are somewhat troublesome and time consuming. The goal of this study was thus to evaluate the use of saliva for cortisol determination (by direct EIA) as a marker for performance and to investigate the reliability and repeatability of plasma cortisol responses to a single i.v. injection of ACTH (50 micrograms or 250 micrograms). Furthermore, the effect of training horses for 8 weeks 3 times per week covering the same distance (increasing from 3.5 km during the first week to 8 km during the last week) either by trotting (approximately 240 m/min) or by cantering (375 m/min) was investigated. For this purpose initially ten four-year-old Hannovarian geldings, all reared in the same State stud, were used. Mean overall correlation between salivary cortisol and plasma cortisol concentrations was 0.64 when samples of various points of time were used. However, in spite of attempts to standardize saliva sample collection, correlation between salivary cortisol levels and plasma cortisol levels at distinct points of time in different tests were low and significant (r = 0.85, p < 0.02) only in one test. Thus, salivary cortisol measurements for diagnostic purposes are not reliable or useful. The repeatability of plasma cortisol responses to ACTH for untrained and trained horses were r = 0.86 and r = 0.8 respectively (p < or = 0.01 and p < or = 0.05 respectively). Training horses either by trotting or cantering did not affect the cortisol response either to treadmill exercise or to stimulation by ACTH. It is concluded that the relationship between salivary cortisol levels and plasma cortisol levels is not close enough to allow the use of salivary cortisol determination as marker of the training status/fitness of horses. The repeatability of the cortisol response to ACTH is similar to the cortisol response to treadmill exercise. Based on plasma cortisol responses to ACTH or treadmill exercise training horses by cantering at low speed is not superior to training by trotting for the fitness of horses. |
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Institut fur Tierzucht und Tierverhalten Mariensee (FAL), Holtystrasse 10, 31535 Neustadt. elsaesser@tzv.fal.de |
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German |
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ACTH Stimulationstest und Bestimmung von Cortisol im Blut und Speichel zur Bewertung des Trainingszustands/der Kondition beim Warmblutpferd |
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0341-6593 |
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PMID:11232423 |
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Equine Behaviour @ team @ |
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4053 |
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Robert, C.; Valette, J.P.; Denoix, J.M. |
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The effects of treadmill inclination and speed on the activity of three trunk muscles in the trotting horse |
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Journal Article |
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Year |
2001 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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33 |
Issue |
5 |
Pages |
466-472 |
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Animals; Biomechanics; Electromyography/methods/veterinary; Exercise Test/veterinary; Gait/physiology; Horses/*physiology; Muscle, Skeletal/*physiology; Physical Conditioning, Animal; Rectus Abdominis/physiology; Time Factors |
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The purpose of this study was to evaluate the effects of speed and slope on the activity of trunk muscles. The electromyographic (EMG) activity of the splenius (Sp), longissimus dorsi (LD) and rectus abdominis (RA) muscles was recorded with surface electrodes during treadmill locomotion at trot for different combinations of speed (3.5 to 6 m/s) and slope (0 to 6%). Raw EMG signals were processed to determine activity duration, onset and end and integrated EMG (IEMG). For the 3 muscles investigated, onset and end of activity were obtained earlier in the stride cycle when speed increased. A longer duration of activity for the LD, a shorter duration for the RA and an unchanged duration for the Sp were also observed. The IEMG of the latter was poorly affected by speed, whereas it increased linearly with speed for the 2 other muscles. When treadmill inclination changed from 0 to 6%, EMG activity of the LD and RA began and ended later; a longer activity duration was noted. Temporal parameters for Sp did not change with slope. A significant and progressive increase in the IEMG of the 3 muscles was observed with increasing slope. This evaluation of the activity of trunk muscles provides objective data for the use of speed or slope in training programmes. |
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UMR INRA-DGER, Biomecanique et Pathalogie Locomotrice du Cheval, UP Anatomie, Ecole Nationale Veterinaire d'Alfort, Maisons-Alfort, France |
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0425-1644 |
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PMID:11558741 |
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Equine Behaviour @ team @ |
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4052 |
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Author |
Hernandez, J.; Hawkins, D.L. |
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Title |
Training failure among yearling horses |
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Journal Article |
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Year |
2001 |
Publication |
American Journal of Veterinary Research |
Abbreviated Journal |
Am J Vet Res |
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Volume |
62 |
Issue |
9 |
Pages |
1418-1422 |
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Animals; Female; Florida; Horses/*physiology; Lameness, Animal/*economics; Male; Physical Conditioning, Animal/adverse effects/economics; Respiratory Tract Diseases/economics/*veterinary; Statistics, Nonparametric |
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OBJECTIVE: To compare financial returns between pinhooked yearling horses (ie, bought and trained for approximately 5 months with the goal of selling the horse at “2-year-olds in training” sales) that had mild or severe training failure and horses that had planned versus nonplanned training failure. ANIMALS: 40 Thoroughbred pinhooked yearling horses. PROCEDURE: During the period from September 1998 through and April 1999, 20 horses had mild training failure (1 to 11 days lost), and 20 horses had severe training failure (13 to 108 days lost). Horses were assigned to these 2 groups on the basis of frequency distribution (median) of days lost during training. Horses were also categorized on the basis of type of training failure (planned vs nonplanned training failure). The outcome of primary interest was financial return. Median financial returns were compared among groups by use of the Mann-Whitney U test. RESULTS: Median financial returns for horses that had severe training failure ($1,000) were significantly different, compared with horses that had mild training failure ($24,000). Analysis of results also indicated that median returns were significantly different among horses that had planned training failure (-$2,000; eg, horses with radiographic abnormalities detected during routine prepurchase examinations that required surgical treatment, resulting in days lost during training), compared with horses that did not ($10,000). CONCLUSIONS AND CLINICAL RELEVANCE: Training failure has an economic impact on revenues in pinhooked yearling horses. Lameness, planned training failure, respiratory disease, and ringworm were common and important causes of training failure. |
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Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610-0136, USA |
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Series Volume |
|
Series Issue |
|
Edition |
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|
| |
ISSN |
0002-9645 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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| |
Notes |
PMID:11560271 |
Approved |
no |
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| |
Call Number |
Equine Behaviour @ team @ |
Serial |
4051 |
|
| Permanent link to this record |
