| Records |
| Author |
Lewis, K.P.; Jaffe, S.; Brannon, E.M. |
Title  |
Analog number representations in mongoose lemurs (Eulemur mongoz): evidence from a search task |
Type |
Journal Article |
| Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
8 |
Issue |
4 |
Pages |
247-252 |
| Keywords |
Analysis of Variance; Animals; *Behavior, Animal; *Feeding Behavior; Female; Lemuridae/*psychology; Male; Mathematics; Odors; Smell/physiology; Time Factors |
| Abstract |
A wealth of data demonstrating that monkeys and apes represent number have been interpreted as suggesting that sensitivity to number emerged early in primate evolution, if not before. Here we examine the numerical capacities of the mongoose lemur (Eulemur mongoz), a member of the prosimian suborder of primates that split from the common ancestor of monkeys, apes and humans approximately 47-54 million years ago. Subjects observed as an experimenter sequentially placed grapes into an opaque bucket. On half of the trials the experimenter placed a subset of the grapes into a false bottom such that they were inaccessible to the lemur. The critical question was whether lemurs would spend more time searching the bucket when food should have remained in the bucket, compared to when they had retrieved all of the food. We found that the amount of time lemurs spent searching was indicative of whether grapes should have remained in the bucket, and furthermore that lemur search time reliably differentiated numerosities that differed by a 1:2 ratio, but not those that differed by a 2:3 or 3:4 ratio. Finally, two control conditions determined that lemurs represented the number of food items, and neither the odor of the grapes, nor the amount of grape (e.g., area) in the bucket. These results suggest that mongoose lemurs have numerical representations that are modulated by Weber's Law. |
| Address |
Department of Anthropology, Washington University, St. Louis, MO 63130-4899, USA |
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English |
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| ISSN |
1435-9448 |
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| Notes |
PMID:15660208 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2497 |
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| Author |
Mehlem M. |
| Title |
Angst und Pferd – Wege zur Bewältigung und Integration von Ängsten mit Hilfe der Pferde. |
Type |
Book Chapter |
| Year |
2005 |
Publication |
Psychotherapie mit dem Pferd – Beiträge aus der Praxis |
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| Volume |
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Issue |
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Pages |
20-37 |
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| Publisher |
FN-Verlag |
Place of Publication |
Warendorf |
Editor |
DKThR |
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no |
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Equine Behaviour @ team @ |
Serial |
5068 |
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| Author |
Hoy, R. |
| Title |
Animal awareness: The (un)binding of multisensory cues in decision making by animals |
Type |
Journal Article |
| Year |
2005 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
| Volume |
102 |
Issue |
7 |
Pages |
2267-2268 |
| Keywords |
Animals; Anura/physiology; *Awareness; *Behavior, Animal; Decision Making; Female; Male; Perception; Sensation |
| Abstract |
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| Address |
Department of Neurobiology and Behavior, 215 Mudd Hall, Cornell University, Ithaca, NY 14850, USA. rrh3@cornell.edu |
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English |
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| ISSN |
0027-8424 |
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| Notes |
PMID:15703288 |
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no |
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Equine Behaviour @ team @ |
Serial |
2821 |
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| Author |
Helton, W.S. |
| Title |
Animal expertise, conscious or not |
Type |
Journal Article |
| Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
8 |
Issue |
2 |
Pages |
67-74 |
| Keywords |
Animals; *Behavior, Animal; *Cognition; *Consciousness; *Learning; Motor Skills; *Practice (Psychology) |
| Abstract |
Rossano (Cognition 89:207, 2003) proposes expertise as an indicator of consciousness in humans and other animals. Since there is strong evidence that the development of expertise requires deliberate practice (Ericsson in The road to excellence: the acquisition of expert performance in the arts and sciences, sports and games 1996), and deliberate practice appears to be outside of the bounds of unconscious processing, then any signs of expertise development in an animal are indicators of consciousness. Rossano's argument may lead to an unsolvable debate about animal consciousness while causing researchers to overlook the underlying reality of animal expertise. This article provides evidence indicative of animals meeting each of the three definitions of expertise established in the scientific literature: expertise as a social construction, expertise as exceptional performance, and expertise as knowledge. In addition, cases of deliberate practice by non-human animals are offered. Acknowledging some animals as experts, regardless of consciousness, is warranted by the research findings and would prove useful in solving many issues remaining in the human expertise literature. |
| Address |
Department of Psychology, Wilmington College, Wilmington, OH 45177, USA, deak_helton@yahoo.com |
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English |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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| Notes |
PMID:15365876 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2511 |
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| Author |
Momozawa, Y.; Kusunose, R.; Kikusui, T.; Takeuchi, Y.; Mori, Y. |
| Title |
Assessment of equine temperament questionnaire by comparing factor structure between two separate surveys |
Type |
Journal Article |
| Year |
2005 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
92 |
Issue |
1-2 |
Pages |
77-84 |
| Keywords |
Anxiety; Factor analysis; Horses; Questionnaires; Temperament |
| Abstract |
To establish a method for assessing equine temperament by use of a questionnaire, we carried out two surveys. The subject animals were all thoroughbreds maintained at the same farm. Respondents were the primary caretaker and two colleagues working with each horse. Factor analysis was performed on the responses to each survey. In both surveys, five factors were extracted and four of them were common between the two surveys. The common factors were [`]Anxiety', [`]Trainability', [`]Affability', and [`]Gate entrance'. There were sufficient internal consistencies in responses about [`]Anxiety', [`]Trainability', and [`]Affability' in the two surveys to indicate the validity of this questionnaire in evaluating these factors in equine temperament. |
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Edition |
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| ISSN |
0168-1591 |
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no |
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Equine Behaviour @ team @ |
Serial |
5063 |
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| Author |
Pritchard, J.C.; Lindberg, A.C.; Main, D.C.J.; Whay, H.R. |
| Title |
Assessment of the welfare of working horses, mules and donkeys, using health and behaviour parameters |
Type |
Journal Article |
| Year |
2005 |
Publication |
Preventive Veterinary Medicine |
Abbreviated Journal |
Prev Vet Med |
| Volume |
69 |
Issue |
3-4 |
Pages |
265-283 |
| Keywords |
*Animal Welfare; Animals; Behavior, Animal; Developing Countries; *Equidae; Female; Health; Male |
| Abstract |
Working animals provide an essential transport resource in developing countries worldwide. Many of these animals are owned by poor people and work in harsh environments, so their welfare is a cause for concern. A protocol was developed to assess the welfare of working horses, mules and donkeys in urban and peri-urban areas, using direct observation of health and behaviour parameters. In this study, 4903 animals used for draught, pack and ridden work in Afghanistan, Egypt, India, Jordan and Pakistan were assessed between December 2002 and April 2003. The data showed that donkeys were more likely than mules or horses to demonstrate avoidance or aggressive behaviour towards an observer, while horses were most likely to make a friendly approach. Fewer than 8% of working equines had abnormal mucous membranes, ectoparasites or poor coat condition. Body lesions occurred predominantly in the areas of the breast/shoulder, withers and girth in all three species, with mules having the highest prevalence of lesions in these areas (22.5, 21.3 and 28.4%, respectively). Among horses and donkeys, the prevalence of these lesions was influenced by the type of work carried out. Lesions on the head, neck, ribs, flank and tail base were seen in less than 10% of animals. Across all three species approximately 70% of animals were thin, having a body condition score (BCS) of 2 or less on a scale of 1-5 (1, very thin; 5, very fat) and more horses were in very thin condition (BCS 1) than mules or donkeys. Over 75% of animals demonstrated limb deformities and abnormalities of gait. The results of this study are being used as the initial stage of a long-term strategy to inform priorities for welfare interventions in working equines and to establish a welfare benchmark. Subsequent stages will rank the welfare concerns identified, assess the contributing risk factors and implement specific interventions to address these risks. Following intervention, success in improving welfare will be measured by repetition of this protocol and comparison with the benchmark. |
| Address |
Department of Clinical Veterinary Science, University of Bristol, Langford, Bristol BS40 5DU, UK. joy.pritchard@bristol.ac.uk |
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English |
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| ISSN |
0167-5877 |
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| Notes |
PMID:15907574 |
Approved |
no |
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Serial |
1889 |
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| Author |
Adams, E.S. |
| Title |
Bayesian analysis of linear dominance hierarchies |
Type |
Journal Article |
| Year |
2005 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
69 |
Issue |
5 |
Pages |
1191-1201 |
| Keywords |
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| Abstract |
Studies on social animals often seek to identify dominance hierarchies, in which individuals are ranked according to competitive abilities based on counts of wins and losses in pairwise encounters. I illustrate Bayesian approaches, based on the method of paired comparisons, for determining ranks and for estimating relationships between dominance ability and other attributes. Bayesian inference combines prior probability distributions for each unknown parameter with likelihood functions to produce the joint posterior probability distribution for the quantities of interest. In contrast to nonparametric techniques for inferring ranks, Bayesian models yield measures of certainty for each inference and allow rigorous estimates of correlations between ranks and covariates even when there is considerable uncertainty as to the ranks themselves. A possible objection to the Bayesian approach is that it appears to entail more restrictive assumptions than do simpler methods. However, simulations show that Bayesian inferences are more robust to deviations from these assumptions than are the results of nonparametric methods. |
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no |
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refbase @ user @ |
Serial |
451 |
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| Author |
Landsberg, G.; Araujo, J.A. |
| Title |
Behavior problems in geriatric pets |
Type |
Journal Article |
| Year |
2005 |
Publication |
The Veterinary Clinics of North America. Small Animal Practice |
Abbreviated Journal |
Vet Clin North Am Small Anim Pract |
| Volume |
35 |
Issue |
3 |
Pages |
675-698 |
| Keywords |
Aging/*pathology/physiology/*psychology; Animals; *Behavior, Animal; Cats/*physiology/psychology; Cognition/physiology; Diagnosis, Differential; Dogs/*physiology/psychology; Preventive Medicine |
| Abstract |
Aging pets often suffer a decline in cognitive function (eg, memory,learning, perception, awareness) likely associated with age-dependent brain alterations. Clinically, cognitive dysfunction may result in various behavioral signs, including disorientation; forgetting of previously learned behaviors, such as house training; alterations in the manner in which the pet interacts with people or other pets;onset of new fears and anxiety; decreased recognition of people, places, or pets; and other signs of deteriorating memory and learning ability. Many medical problems, including other forms of brain pathologic conditions, can contribute to these signs. The practitioner must first determine the cause of the behavioral signs and then determine an appropriate course of treatment, bearing in mind the constraints of the aging process. A diagnosis of cognitive dysfunction syndrome is made once other medical and behavioral causes are ruled out. |
| Address |
Doncaster Animal Clinic, 99 Henderson Avenue, Thornhill, Ontario L3T2K9, Canada. gmlandvm@aol.com |
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English |
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0195-5616 |
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| Notes |
PMID:15833565 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2855 |
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| Author |
Harewood, E.J.; McGowan, C.M. |
| Title |
Behavioral and physiological responses to stabling in naive horses |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
J. Equine Vet. Sci. |
| Volume |
25 |
Issue |
4 |
Pages |
164-170 |
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| Abstract |
The purpose of this study was to investigate the response of horses to confinement and isolation in a stable (indoor individual housing) for the first time using behavioral indices, heart rate, and salivary cortisol concentration. Six naive 2-year-old Australian Stock Horse fillies were examined at 4-hour intervals over 24 hours in an outdoor group paddock followed by 24 hours in indoor individual housing. Behavioral observations and scores and heart rates were recorded and saliva samples were taken at each interval. During stabling, all horses became agitated and demonstrated increased vocalization and movement. Behavioral scores were significantly higher in the indoor individual housing (P < .001). No significant difference in heart rates between the two environments was detected. Mean salivary cortisol did not increase significantly (2 ng/mL ± 1.4 ng/mL in outdoor group paddock vs 2.5 mL ± 1.2 ng/mL in indoor individual housing). No diurnal rhythm in salivary cortisol was evident in either the outdoor group paddock or indoor individual housing. The results of this study highlight that a combination of behavioral and physiological measures allow better understanding of stress, where one measurement may be misleading. First time stabling of horses elicited marked behavioral responses indicative of stress that were not reflected in increased heart rates or salivary cortisol concentrations. The lack of a diurnal cortisol rhythm and the comparatively high basal cortisol concentrations found in the outdoor group paddock environment may imply that the fillies were already stressed; therefore, stabling did not cause further aberrations detectable by salivary cortisol analysis. |
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Elsevier |
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0737-0806 |
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| Notes |
doi: 10.1016/j.jevs.2005.03.008 |
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no |
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Equine Behaviour @ team @ |
Serial |
6137 |
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| Author |
Savage; , A.O.; Kirsten Leong; Laura Graham; Anne |
| Title |
Behavioral indices of estrus in a group of captive African elephants (Loxodonta africana) |
Type |
Journal Article |
| Year |
2005 |
Publication |
Zoo Biology |
Abbreviated Journal |
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| Volume |
24 |
Issue |
4 |
Pages |
311-329 |
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| Abstract |
This study investigated behavioral signals of estrus by systematically monitoring the interactions of one male with four female African elephants housed in a naturalistic outdoor enclosure at Disney's Animal Kingdom over a period of 11 months. We measured changes in five spatial behaviors and 22 tactile-contact behaviors, as well as changes in serum progestagen and LH concentrations, across three ovarian cycles for each female. Two females did not cycle during the study. Three different phases of the ovarian cycle were identified: mid luteal, anovulatory follicular, ovulatory follicular. The male followed more and carried out more genital inspections, flehmen, and trunk-to-mouth behaviors toward cycling females during their ovulatory phase. Genital inspections by the male peaked above baseline levels on the day of an LH surge, and up to 9 days before, in both cycling females and, thus, might be a useful behavioral index of estrus. The male also carried out more genital inspections, flehmen, and trunk touches to the back leg toward ovulatory cycling than noncycling females. Overall, our results indicated that: 1) a single subadult African elephant male could discriminate two females in the ovulatory phase of their cycle (i.e., during the 3 weeks preceding ovulation) from the mid luteal phase; 2) the male also discriminated two cycling females in the ovulatory and anovulatory follicular phases from two noncycling females; 3) two females in the ovulatory phase of the cycle displayed a greater variety of tactile-contact behavior toward the male compared to the other cycle phases. Zoo Biol 0:1-19, 2005. – 2005 Wiley-Liss, Inc. |
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1098-2361 |
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refbase @ user @ Savage;2005 |
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3552 |
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