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Pannozzo, P.L.; Phillips, K.A.; Haas, M.E.; Mintz, E.M. |
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Title |
Social Monitoring Reflects Dominance Relationships in a Small Captive Group of Brown Capuchin Monkeys (Cebus apella) |
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2007 |
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Ethology |
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Ethology |
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113 |
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9 |
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881-888 |
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Abstract In several studies of social monitoring in primates, subordinate animals directed more visual attention toward dominant animals than vice versa. This behavior is thought to enable subordinate animals to avoid conflict. We sought to clarify whether visual attention behavior functions in this manner in a small captive group of brown capuchin monkeys, Cebus apella. We tested the hypothesis that social monitoring is related to dominance status. Dominance status was determined based on the directionality of aggressive behavior, and visual attention was quantified by using focal animal sampling. Subordinate animals directed significantly more visual attention toward others than dominant animals. Subordinate animals also looked more frequently at the animals that attacked them and others the most. The results indicate that social monitoring behavior in this captive group was driven by conflict-avoidance. |
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Equine Behaviour @ team @ |
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4312 |
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Author |
Hübener, Eberhard |
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Title |
Pferdgerechte Hilfen und der Zeitgeber dafür |
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2007 |
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Piaffe |
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1/2007 |
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Harmonie zwischen Mensch und Pferd und Verständnis des Reiters für körperliche Beschaffenheit und Verhaltensweise des Pferdes fordern wahre Hippologen seit Jahrhunderten. Dauernde intensive Aufmerksamkeit ermöglicht dem Pferd, kaum sichtbare Signale des Leittiers oder des Reiters (!) wahrzunehmen und blitzschnell zu befolgen. Wir müssen mit dem Pferd also nicht umgehen, als sei es unwillig oder taub.
Wenn der Reiter in perfekter Balance sitzt, möchte sein Schenkel während des Vorsetzens des gleichseitigen Pferde-Hinterbeins “selbsttätig” an den wegschwingenden Pferderumpf fallen. Dies ist der einzige Moment, in dem das Pferd eine vorwärtstreibende, seitwärtstreibende oder verhaltende Einwirkung des Reiters unmittelbar befolgen kann. Video-Aufnahmen bestätigen, was wir bereits vor über hundert Jahren wußten, was dann in unserer “Sportorganisation” aber irgendwie in Vergessenheit geriet. Natürlich dürfen wir den Schenkel nicht ständig ans Pferd fallen lassen, weil das Pferd das dann nicht mehr als Signal wertet. Wie die Schenkeleinwirkung 'an-' und 'abstellbar' ist, wird erläutert.
Für das reiterliche Niveau hierzulande ist von entscheidender Bedeutung, daß junge Reiter an der Basis mit dem “selbsttätigen Schenkel” vertraut gemacht werden, sobald sie halbwegs sattelfest geworden sind. Jugendliche erlernen ihn spielend und verlieren ihn nie mehr, Erwachsene haben es da mangels ausreichender Beweglichkeit ihres Beckenringes wesentlich schwerer. Angesichts des höchst unzureichenden Angebotes guten Reitunterrichts könnte ein Lehr-Video zu diesem Thema überaus nützlich sein. Sponsoren dafür werden hier gesucht!
Für Reiter, die den Balancesitz beherrschen und somit fühlen, wie ihre Schenkel an den wegschwingenden Pferderumpf fallen, ist Reiten fortan im Wesentlichen Selbstdisziplin.
Daß wir wichtigste Elemente der Reitkunst verlieren können, wenn wir uns nicht mehr wissenschaftlich mit ihrem Inhalt auseinandersetzen, ist für den Autor Anlaß, sich in diesem Aufsatz erneut für interdisziplinäre universitäre Forschung zur Reitlehre und für die Unterstützung solcher Projekte durch die Spitzenorganisation einzusetzen. |
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Wu Wei Verlag |
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D-86938 Schondorf |
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Reiten Lesen Denken @ eberhardhuebener @ |
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4319 |
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Author |
Hübener, Eberhard |
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Title |
Horse-Appropriate Aids And Their Timer |
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2007 |
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www.reiten-lesen-denken.de |
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Harmony between man and horse, and the rider`s understanding of the function of a horse`s body and mind – these are things that knowledgeable horsemen have demanded for centuries. Constant, focussed attention enables the horse to understand barely visible signals from its herd leader or its rider (!) and to act upon them instantly. Thus it is not necessary to treat a horse as if it were either unwilling or deaf.
When the rider sits in perfect balance, his leg tends to fall “self-actively” against the horse`s trunk as it swings away when the horse`s hind leg on the same side moves forwards. This is the only moment in which a horse is able to immediately follow the signal from the rider to move forwards, sideways, or to hold back. Video footage proves what we already knew more than a hundred years ago, but which our sports organisations have somehow managed to forget. Of course we should not let our leg fall against the horse all the time, because then the horse will not register this as a signal. It is explained how to “switch on” and “switch off” the leg signals.
For the equestrian standards in this country, it is essential that young riders are familiarized with the “self-active” leg, as soon as they are halfway firm in the saddle. Youngsters learn this easily and never forget it again; it is far more difficult for adults, as the pelvic ring is no longer so flexible. As there is a definite lack of good riding lessons, an instructive video on this subject would be extremely useful. Sponsors are urgently required!
For riders who have mastered the balanced seat and can feel how their leg falls against the horse`s trunk as it swings away, riding becomes primarily a matter of self discipline.
If we do not examine these matters scientifically, we are in danger of loosing the most important elements of the equestrian art. With this thought in mind, the author uses this essay to argue once again for interdisciplinary research of equitation at universities, and for the support of these projects by high ranking organisations. |
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Reiten Lesen Denken @ eberhardhuebener @ |
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4320 |
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Harris, P.A. |
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How should we feed horses – and how many times a day? |
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2007 |
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The Veterinary Journal |
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173 |
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2 |
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252-253 |
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Admin @ knut @ |
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4351 |
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Fischhoff, I.R.; Sundaresan, S.R.; Cordingley, J.; Rubenstein, D.I. |
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Habitat use and movements of plains zebra (Equus burchelli) in response to predation danger from lions |
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2007 |
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Behavioral Ecology |
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Behav. Ecol. |
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18 |
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4 |
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725-729 |
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Prey species must adapt their behavior to avoid predation. As a key prey item for lions (Panthera leo), plains zebras (Equus burchelli) were expected to respond to immediate threats posed by lions in their area. In addition, zebras were predicted to exhibit behavior tuned to reduce the potential for encounters with lions, by modifying their movement patterns in the times of day and habitats of greatest lion danger. We studied a population of approximately 600 plains zebra living in Ol Pejeta Conservancy, Kenya. We found that zebra abundance on or near a grassland patch was lower if lions had also been observed on that patch during the same day. Predation danger was highest in grassland habitat during the night, when lions were more active. Zebra sightings and global positioning system radio collar data indicated that zebras also reduced their use of grassland at night, instead using more woodland habitat. Zebras moved faster and took sharper turns in grassland at night. It is hypothesized that these more erratic movements assist zebras in avoiding detection or capture by lions. |
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10.1093/beheco/arm036 |
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Equine Behaviour @ team @ |
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4360 |
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Author |
Janis, C. |
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Title |
An Evolutionary History of Browsing and Grazing Ungulates |
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2007 |
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The Ecology of Browsing and Grazing |
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21-45 |
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Browsing (i.e., eating woody and non-woody dicotyledonous plants) and grazing (i.e., eating grass) are distinctively different types of feeding behaviour among ungulates today. Ungulates with different diets have different morphologies (both craniodental ones and in aspects of the digestive system) and physiologies, although some of these differences are merely related to body size, as grazers are usually larger than browsers. There is also a difference in the foraging behaviour in terms of the relationship between resource abundance and intake rate, which is linear in browsers but asymptotic in grazers. The spatial distribution of the food resource is also different for the different types of herbage, browse being more patchily distributed than grass, and thus browsers and grazers are likely to have a very different perception of food resources in any given ecosystem (see Gordon 2003, for review). |
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Equine Behaviour @ team @ |
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4392 |
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Tibbetts, E.A.; Dale, J. |
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Individual recognition: it is good to be different |
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2007 |
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Trends in Ecology & Evolution |
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Trends. Ecol. Evol |
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22 |
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10 |
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529-537 |
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Individual recognition (IR) behavior has been widely studied, uncovering spectacular recognition abilities across a range of taxa and modalities. Most studies of IR focus on the recognizer (receiver). These studies typically explore whether a species is capable of IR, the cues that are used for recognition and the specializations that receivers use to facilitate recognition. However, relatively little research has explored the other half of the communication equation: the individual being recognized (signaler). Provided there is a benefit to being accurately identified, signalers are expected to actively broadcast their identity with distinctive cues. Considering the prevalence of IR, there are probably widespread benefits associated with distinctiveness. As a result, selection for traits that reveal individual identity might represent an important and underappreciated selective force contributing to the evolution and maintenance of genetic polymorphisms. |
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Equine Behaviour @ team @ |
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4572 |
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Author |
Peterson, R. O. |
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Title |
The Wolves of Isle Royale: A Broken Balance |
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2007 |
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About the Book
“Few can rival what Rolf Peterson has accomplished on Isle Royale. His study, a true classic, offers lessons and examples to us all who hope to do the same. This book reveals some of the secrets and details of this one-of-a-kind wolf study.”
-Douglas W. Smith, Leader, Yellowstone Wolf Project
For nearly half a century Isle Royale National Park has been the site of a comprehensive study on wolves (2008 marks the fiftieth anniversary)-the world's longest-running study on any wild animal. With its lush northern landscape and wolf and moose populations, the pristine and isolated park presents an ideal laboratory for wildlife biologists.
The Wolves of Isle Royale is author and wildlife biologist Rolf Peterson's fascinating firsthand account of the relationship that exists between the wolf and the moose on the island. Illustrated with over 100 photographs, this book reveals the true nature of the mysterious and little-understood wolf, and it offers novel solutions to the conservation crisis as the wolf population falters to its lowest recorded level.
Rolf O. Peterson is known worldwide for his wolf research. His photographs have been published in National Geographic, Audubon, and National Wildlife. He is Professor of Wildlife Ecology at Michigan Technological University.
Cover photo credit: Rolf O. Peterson |
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The university of Michigan Press |
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Michigan |
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978-0-472-03261-7 |
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Equine Behaviour @ team @ |
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4716 |
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Lusseau, D. |
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Evidence for social role in a dolphin social network |
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2007 |
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Evolutionary Ecology |
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Evol. Ecol. |
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21 |
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3 |
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357-366 |
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Abstract Social animals have to take into consideration the behaviour of conspecifics when making decisions to go by their daily lives. These decisions affect their fitness and there is therefore an evolutionary pressure to try making the right choices. In many instances individuals will make their own choices and the behaviour of the group will be a democratic integration of everyone’s decision. However, in some instances it can be advantageous to follow the choice of a few individuals in the group if they have more information regarding the situation that has arisen. Here I provide early evidence that decisions about shifts in activity states in a population of bottlenose dolphin follow such a decision-making process. This unshared consensus is mediated by a non-vocal signal, which can be communicated globally within the dolphin school. These signals are emitted by individuals that tend to have more information about the behaviour of potential competitors because of their position in the social network. I hypothesise that this decision-making process emerged from the social structure of the population and the need to maintain mixed-sex schools. |
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5154 |
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Reimer, M. |
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Investigation of appeasement signals in domestic dogs |
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2007 |
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University of Sussex |
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Ph.D. thesis |
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Sussex |
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