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| Author |
Gajdon G.K.,; Fijn N.,; Huber L., |
| Title |
Testing social learning in a wild mountain parrot, the kea (Nestor notabilis) |
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Journal Article |
| Year |
2004 |
Publication |
Learning & Behavior |
Abbreviated Journal |
Learn. Behav. |
| Volume |
32 |
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62-71 |
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| Abstract |
Huber, Taborsky, and Rechberger (2001) reported an experiment in which the efficiency with which captive keas opened a complex food container was increased by observation of a skilled conspecific. However, only testing social learning in free-ranging animals can demonstrate social learning in natural conditions. For that purpose, a tube-lifting paradigm was developed and tested on keas both in captivity and in Mount Cook National Park, New Zealand. The task was to remove a tube from an upright pole in order to gain access to a reward inside the tube. The top of the pole was higher than a standing kea, so that, to remove the tube, an individual had to simultaneously climb onto the pole and manipulate the tube up the pole with its bill. Because only 1 naive bird managed to remove a tube twice in 25 halfhour sessions and disappeared after success, another bird was trained to solve the task and to provide demonstrations for others. Even under such conditions, only 2 of at least 15 birds learned to remove the tube in 28 sessions. There was no indication that observer birds' use of bill and feet when exploring the tube changed as the number of observations of tube removal increased in a way that would, in principle, increase the likelihood of tube removal. The results suggest a dissociation of social learning potential as assessed in laboratory animals, and social transmission of foraging techniques in natural populations. |
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refbase @ user @ |
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830 |
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| Author |
Reader S.M., |
| Title |
Distinguishing social and asocial learning using diffusion dynamics |
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Journal Article |
| Year |
2004 |
Publication |
Learning & Behavior |
Abbreviated Journal |
Learn. Behav. |
| Volume |
32 |
Issue |
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Pages |
90-104 |
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Theoretical models predict that the cumulative number of individuals displaying a socially learned novel behavior will follow an accelerating pattern over time, whereas asocial processes have been associated with linear or decelerating functions. This raises the possibility that the shape of the diffusion curve may reveal something about the learning processes involved. If true, this would be particularly useful for identifying social transmission in observational field studies. Published data are reviewed and are found to provide limited support for this view. The use of accelerating curves as a diagnostic is challenging because (1) alternative theoretical models make similar predictions, (2) clear supporting empirical data are lacking, and (3) practical considerations frequently make accurate construction of the diffusion curve difficult. |
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831 |
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| Author |
Griffin A.S., |
| Title |
Social learning about predators: A review and prospectus |
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Journal Article |
| Year |
2004 |
Publication |
Learning & Behavior |
Abbreviated Journal |
Learn. Behav. |
| Volume |
32 |
Issue |
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131-140 |
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In comparison with social learning about food, social learning about predators has received little attention. Yet such research is of potential interest to students of animal cognition and conservation biologists. I summarize evidence for social learning about predators by fish, birds, eutherian mammals, and marsupials. I consider the proposal that this phenomenon is a case of S-S classical conditioning and suggest that evolution may have modified some of the properties of learning to accommodate for the requirements of learning socially about danger. I discuss some between-species differences in the properties of socially acquired predator avoidance and suggest that learning may be faster and more robust in species in which alarm behavior reliably predicts high predatory threat. Finally, I highlight how studies of socially acquired predator avoidance can inform the design of prerelease antipredator training programs for endangered species. |
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832 |
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| Author |
White, D.J. |
| Title |
Influences of social learning on mate-choice decisions |
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Journal Article |
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2004 |
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Learning & Behavior |
Abbreviated Journal |
Learn. Behav. |
| Volume |
32 |
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105-113 |
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Evidence from both field and laboratory is consistent with the hypothesis that animals can acquire mate preferences by observing the mating behavior of others. It is difficult, however, to distinguish social learning about mates from a host of other social effects on mating that do not produce changes in preferences. Examples are drawn from laboratory studies on mate choice in female and male Japanese quail that illustrate ways in which social cues influence mating decisions. Quail of both sexes use social cues to modify their mate choices, but the sexes use the information to serve different purposes. Female quail gain preferences for males seen mating with other females, whereas males avoid females that they had observed mating with other males. This sex difference in social learning provides an example of how costs and benefits of sexual behavior can shape decision-making processes. Implications of the influence of social learning on sexual selection are briefly discussed. |
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refbase @ user @ |
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833 |
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PNR Powers[1]; AJ Harrison[1] |
| Title |
Influences of a rider on the rotation of the horse-rider system during jumping |
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Journal Article |
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2004 |
Publication |
Equine and Comparative Exercise Physiology |
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1 |
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33-40 |
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Equine Behaviour @ team @ |
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3662 |
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| Author |
Laland K.N. |
| Title |
Social learning strategies |
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Journal Article |
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2004 |
Publication |
Learning & Behavior |
Abbreviated Journal |
Learn. Behav. |
| Volume |
32 |
Issue |
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4-14 |
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In most studies of social learning in animals, no attempt has been made to examine the nature of the strategy adopted by animals when they copy others. Researchers have expended considerable effort in exploring the psychological processes that underlie social learning and amassed extensive data banks recording purported social learning in the field, but the contexts under which animals copy others remain unexplored. Yet, theoretical models used to investigate the adaptive advantages of social learning lead to the conclusion that social learning cannot be indiscriminate and that individuals should adopt strategies that dictate the circumstances under which they copy others and from whom they learn. In this article, I discuss a number of possible strategies that are predicted by theoretical analyses, including copy when uncertain, copy the majority, and copy if better, and consider the empirical evidence in support of each, drawing from both the animal and human social learning literature. Reliance on social learning strategies may be organized hierarchically, their being employed by animals when unlearned and asocially learned strategies prove ineffective but before animals take recourse in innovation. |
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Equine Behaviour @ team @ |
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4193 |
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| Author |
Eckardt, G.; Windhofer, A. |
| Title |
Untersuchung der Beanspruchung von Pferden während Isolation und beim Verladen |
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2004 |
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Master's thesis |
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Equine Behaviour @ team @ |
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5190 |
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| Author |
Hois, C. |
| Title |
Feldstudie zur Gewichtsentwicklung und Gewichtsschätzung beim wachsenden Pferd |
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2004 |
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Ph.D. thesis |
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Tierärztlichen Fakultät der Ludwig-Maximilians-Universität München |
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Equine Behaviour @ team @ |
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5204 |
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Monfort, S. |
| Title |
Przewalski’s Horse (Equus przewalskii) Species Survival Plan |
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Conference Article |
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2004 |
Publication |
PROCEEDINGS OF THE EAZA EQUID TAG MEETING FROM 5TH TO 9TH MAY 2004 AT HORTOBÁGY NATIONAL PARK, HUNGARY |
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A Master Planning meeting for the Asian wild horse, or Przewalski’s horse, was held 14th –15th April 2004 at the National Zoological Park’s Conservation and Research Center (CRC) in Front Royal, Virginia. The overall objectives of the meeting were to 1) develop a strategy to maximize genetic diversity and improve demographics, 2) make specific breeding recommendations, 3) establish ex situ research priorities, and 4) discuss strategies for ensuring that the North American herd contributes to the global managed population, as well as ongoing in situ conservation programs. Of particular importance were discussions focused on whether to continue managing the North American herd as two separate bloodlines — the A- and B-lines — or to manage the entire population using an M-line, or mixed-line strategy, designed to maximize founder representation and genetic diversity. The Equid Taxon Advisory Group has currently designated a target population of 150 specimens for this species. The current SSP population is 154 individuals distributed among 18 institutions (15 AZA, 3 non-AZA), of which San Diego Zoo, the Wilds, Minnesota Zoo, Calgary Zoo, the Wildlife Conservation Society/Bronx Zoo and the National Zoological Park were represented at the Master Planning meeting. |
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Smithonian’s National Zoo, Front Royal, USA |
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Equine Behaviour @ team @ |
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5301 |
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| Author |
Deingruber, K. |
| Title |
Auswirkungen von Schallbelastungen durch Freizeitlärm auf das Hörvermögen – experimentelle Untersuchungen am Meerschweinchen |
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2004 |
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Ph.D. thesis |
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Ludwig-Maximilians-Universität München |
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Equine Behaviour @ team @ ediss1932 |
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5632 |
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