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Author Thornton Alex; Lukas Dieter url  doi
openurl 
  Title Individual variation in cognitive performance: developmental and evolutionary perspectives Type Journal Article
  Year 2012 Publication Philosophical Transactions of the Royal Society B: Biological Sciences Abbreviated Journal (up) Philos Trans R Soc Lond B Biol Sci  
  Volume 367 Issue 1603 Pages 2773-2783  
  Keywords  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Royal Society Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes doi: 10.1098/rstb.2012.0214 Approved no  
  Call Number Equine Behaviour @ team @ Serial 6555  
Permanent link to this record
 

 
Author Sueur, C.; Deneubourg, J.-L.; Petit, O. url  doi
openurl 
  Title From Social Network (Centralized vs. Decentralized) to Collective Decision-Making (Unshared vs. Shared Consensus) Type Journal Article
  Year 2012 Publication PLoS ONE Abbreviated Journal (up) PLoS ONE  
  Volume 7 Issue 2 Pages e32566 EP -  
  Keywords  
  Abstract <p>Relationships we have with our friends, family, or colleagues influence our personal decisions, as well as decisions we make together with others. As in human beings, despotism and egalitarian societies seem to also exist in animals. While studies have shown that social networks constrain many phenomena from amoebae to primates, we still do not know how consensus emerges from the properties of social networks in many biological systems. We created artificial social networks that represent the continuum from centralized to decentralized organization and used an agent-based model to make predictions about the patterns of consensus and collective movements we observed according to the social network. These theoretical results showed that different social networks and especially contrasted ones – star network vs. equal network – led to totally different patterns. Our model showed that, by moving from a centralized network to a decentralized one, the central individual seemed to lose its leadership in the collective movement's decisions. We, therefore, showed a link between the type of social network and the resulting consensus. By comparing our theoretical data with data on five groups of primates, we confirmed that this relationship between social network and consensus also appears to exist in animal societies.</p>  
  Address  
  Corporate Author Thesis  
  Publisher Public Library of Science Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5712  
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Author Meagher, R.K.; Mason, G.J. doi  openurl
  Title Environmental Enrichment Reduces Signs of Boredom in Caged Mink Type Journal Article
  Year 2012 Publication PLoS ONE Abbreviated Journal (up) PLoS ONE  
  Volume 7 Issue 11 Pages e49180  
  Keywords  
  Abstract <p>Animals housed in impoverished cages are often labelled ‘bored’. They have also been called ‘apathetic’ or ‘depressed’, particularly when profoundly inactive. However, these terms are rarely operationally defined and validated. As a negative state caused by under-stimulation, boredom should increase interest in stimuli of all kinds. Apathy (lack of interest), by contrast, should manifest as decreased interest in all stimuli, while anhedonia (loss of pleasure, a depressive symptom) should specifically decrease interest in normally rewarding stimuli. We tested the hypotheses that mink, a model carnivore, experience more boredom, depression-like apathy, or anhedonia in non-enriched (NE) cages than in complex, enriched (E) cages. We exposed 29 subjects (13 E, 16 NE) to ten stimuli categorized <italic>a priori</italic> as aversive (e.g. air puffs), rewarding (e.g. evoking chasing) or ambiguous/neutral (e.g. candles). Interest in stimuli was assessed via latencies to contact, contact durations, and durations oriented to stimuli. NE mink contacted all stimuli faster (P = 0.003) than E mink, and spent longer oriented to/in contact with them, albeit only significantly so for ambiguous ones (treatment*type P<0.013). With stimulus category removed from statistical models, interest in all stimuli was consistently higher among NE mink (P<0.0001 for all measures). NE mink also consumed more food rewards (P = 0.037). Finally, we investigated whether lying down while awake and stereotypic behaviour (both increased by NE housing) predicted these responses. Lying awake positively co-varied with certain measures of increased exploration. In contrast, stereotypic ‘scrabbling’ or locomotion (e.g. pacing) did not. Overall, NE mink showed no evidence of apathy or depression, but instead a heightened investigation of diverse stimuli consistent with boredom. This state was potentially indicated by spending much time lying still but awake (although this result requires replication). Boredom can thus be operationalized and assessed empirically in non-human animals. It can also be reduced by environmental enrichment.</p>  
  Address  
  Corporate Author Thesis  
  Publisher Public Library of Science Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5635  
Permanent link to this record
 

 
Author Fureix, C.; Jego, P.; Henry, S.; Lansade, L.; Hausberger, M. url  doi
openurl 
  Title Towards an Ethological Animal Model of Depression? A Study on Horses Type Journal Article
  Year 2012 Publication PLoS ONE Abbreviated Journal (up) PLoS ONE  
  Volume 7 Issue 6 Pages e39280 EP -  
  Keywords  
  Abstract <sec><title>Background</title><p>Recent reviews question current animal models of depression and emphasise the need for ethological models of mood disorders based on animals living under natural conditions. Domestic horses encounter chronic stress, including potential stress at work, which can induce behavioural disorders (<italic>e.g.</italic> “apathy”). Our pioneering study evaluated the potential of domestic horses in their usual environment to become an ethological model of depression by testing this models’ face validity (<italic>i.e.</italic> behavioural similarity with descriptions of human depressive states).</p></sec><sec><title>Methodology/Principal Findings</title><p>We observed the spontaneous behaviour of 59 working horses in their home environment, focusing on immobility bouts of apparent unresponsiveness when horses displayed an atypical posture (termed <italic>withdrawn</italic> hereafter), evaluated their responsiveness to their environment and their anxiety levels, and analysed cortisol levels. Twenty-four percent of the horses presented the withdrawn posture, also characterized by gaze, head and ears fixity, a profile that suggests a spontaneous expression of “behavioural despair”. When compared with control “non-withdrawn” horses from the same stable, withdrawn horses appeared more indifferent to environmental stimuli in their home environment but reacted more emotionally in more challenging situations. They exhibited lower plasma cortisol levels. Withdrawn horses all belonged to the same breed and females were over-represented.</p></sec><sec><title>Conclusions/Significance</title><p>Horse might be a useful potential candidate for an animal model of depression. Face validity of this model appeared good, and potential genetic input and high prevalence of these disorders in females add to the convergence. At a time when current animal models of depression are questioned and the need for novel models is expressed, this study suggests that novel models and biomarkers could emerge from ethological approaches in home environments.</p></sec>  
  Address  
  Corporate Author Thesis  
  Publisher Public Library of Science Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5709  
Permanent link to this record
 

 
Author von Rohr, C.R.; Koski, S.E.; Burkart, J.M.; Caws, C.; Fraser, O.N.; Ziltener, A.; van Schaik, C.P. url  doi
openurl 
  Title Impartial Third-Party Interventions in Captive Chimpanzees: A Reflection of Community Concern Type Journal Article
  Year 2012 Publication PLoS ONE Abbreviated Journal (up) PLoS ONE  
  Volume 7 Issue 3 Pages e32494 EP -  
  Keywords  
  Abstract <p>Because conflicts among social group members are inevitable, their management is crucial for group stability. The rarest and most interesting form of conflict management is policing, i.e., <italic>impartial interventions by bystanders</italic>, which is of considerable interest due to its potentially moral nature. Here, we provide descriptive and quantitative data on policing in captive chimpanzees. First, we report on a high rate of policing in one captive group characterized by recently introduced females and a rank reversal between two males. We explored the influence of various factors on the occurrence of policing. The results show that only the alpha and beta males acted as arbitrators using manifold tactics to control conflicts, and that their interventions strongly depended on conflict complexity. Secondly, we compared the policing patterns in three other captive chimpanzee groups. We found that although rare, policing was more prevalent at times of increased social instability, both high-ranking males and females performed policing, and conflicts of all sex-dyad combinations were policed. These results suggest that the primary function of policing is to increase group stability. It may thus reflect prosocial behaviour based upon “community concern.” However, policing remains a rare behaviour and more data are needed to test the generality of this hypothesis.</p>  
  Address  
  Corporate Author Thesis  
  Publisher Public Library of Science Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5806  
Permanent link to this record
 

 
Author Warmuth, V.; Eriksson, A.; Bower, M.A.; Barker, G.; Barrett, E.; Hanks, B.K.; Li, S.; Lomitashvili, D.; Ochir-Goryaeva, M.; Sizonov, G.V.; Soyonov, V.; Manica, A. url  doi
openurl 
  Title Reconstructing the origin and spread of horse domestication in the Eurasian steppe Type Journal Article
  Year 2012 Publication Proceedings of the National Academy of Sciences Abbreviated Journal (up) Proc Natl Acad Sci U S A  
  Volume Issue Pages  
  Keywords  
  Abstract Despite decades of research across multiple disciplines, the early history of horse domestication remains poorly understood. On the basis of current evidence from archaeology, mitochondrial DNA, and Y-chromosomal sequencing, a number of different domestication scenarios have been proposed, ranging from the spread of domestic horses out of a restricted primary area of domestication to the domestication of numerous distinct wild horse populations. In this paper, we reconstruct both the population genetic structure of the extinct wild progenitor of domestic horses, Equus ferus, and the origin and spread of horse domestication in the Eurasian steppes by fitting a spatially explicit stepping-stone model to genotype data from >300 horses sampled across northern Eurasia. We find strong evidence for an expansion of E. ferus out of eastern Eurasia about 160 kya, likely reflecting the colonization of Eurasia by this species. Our best-fitting scenario further suggests that horse domestication originated in the western part of the Eurasian steppe and that domestic herds were repeatedly restocked with local wild horses as they spread out of this area. By showing that horse domestication was initiated in the western Eurasian steppe and that the spread of domestic herds across Eurasia involved extensive introgression from the wild, the scenario of horse domestication proposed here unites evidence from archaeology, mitochondrial DNA, and Y-chromosomal DNA.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5612  
Permanent link to this record
 

 
Author Benson-Amram, S.; Holekamp, K.E. url  doi
openurl 
  Title Innovative problem solving by wild spotted hyenas Type Journal Article
  Year 2012 Publication Proc R Soc B Abbreviated Journal (up) Proc R Soc B  
  Volume 279 Issue Pages 4087-4095  
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  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Benson-Amram2012 Serial 6266  
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Author Klingel, H . pdf  openurl
  Title Social Organisation and Social Behaviour of the Equids Type Conference Article
  Year 2012 Publication Proceedings of the 2. International Equine Science Meeting Abbreviated Journal (up) Proc. 2. Int. Equine. Sci. Mtg  
  Volume in press Issue Pages  
  Keywords  
  Abstract In contrast to the great similarity in behaviour and ecology of the 6 extant Equid species, 2 distinct types of social organisation have evolved, and both are adapted to life in semi-arid to arid regions where environmental conditions force them to migrate seasonally or opportunistically.

The ranges of the various species overlap: Mountain Zebra Equus zebra and Plains Zebra E. quagga in South Africa and Namibia, Plains Zebra and Grevy's Zebra E. grevyi in Kenya and Ethiopia, Grevy's Zebra and African Wild Ass E. africanus in Ethiopia, Asiatic Wild Ass E. hemionus and Przewalski Horse E. przewalski in Mongolia and China. Although, in the overlap zones, individuals of the different species are using the same resources like water and grazing next to each other, they rarely make closer contacts.

.

In the type 1 species, Horse, Plains Zebra and Mountain Zebra, the adults live in non-territorial, stable, one-male families and as single bachelors and in bachelor groups. Family stallions have the exclusive mating rights with the mares in their harems. These consist of up to 6 unrelated mares plus their offspring, totalling up to 20 members.

Mares stay in their harem until death. Stallions' tenure is from age 5-6 years, i.e. when they succeed in controlling a harem, for close to life time, but are replaced when dead or incapacitated. Harems are stable even in the absence of a stallion, indicating voluntary membership. Adolescent mares leave their parental families to become members of another harem.

In Plains Zebra the adolescent mares are abducted, during an oestrus, by suitors who fight the defending family stallion/father. Successful stallions are bachelors who start a family, or family stallions enlarging their harem. Young stallions leave their parental families voluntarily at age 2-3 years and join bachelor stallion groups from where the family stallions are recruited.

An individualised dominance hierarchy excists with the stallion in the alpha position. It is based on individual knowledge and recognition of the members.

In the type 2 species Grevy's Zebra, African Wild Ass and Asiatic Wild Ass adult stallions monopolise territories in which they have the exclusive mating rights. Stallions are tolerant of any conspecifics entering their territory. Bachelor stallions behave subordinately – or fight for the possession of the territory which is a prerequisite for reproduction.

Mares join up to form anonymous and unstable groups or herds. The only stable unit is of a mare and her offspring. In Grevy's Zebra mares with foal join preferentially conspecifics of the same soial status, as do mares without foal.

Matings take place inside the territory. There is no lasting relationship of the mare with a particular stallion, and the mare may be mated by any stallion whose territory she is visiting.

Territories measure up to 10 or more square kilometres, and tenure is for several years.

Grevy Zebra territorial owners leave their territories for a few hours to visit a water hole, or for months when grazing and water conditions are below requirements, and re-occupy it upon return, unchallenged.
 
  Address  
  Corporate Author Klingel, H . Thesis  
  Publisher Xenophon Publishing Place of Publication Wald Editor Krueger, K.  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 978-3-9808134-26 ISBN Medium  
  Area Expedition Conference IESM 2012  
  Notes Invited speaker IESM 2012 Approved no  
  Call Number Equine Behaviour @ team @ Serial 5436  
Permanent link to this record
 

 
Author Klingel, H . pdf  isbn
openurl 
  Title Soziale Organisation und Sozialverhalten der Equiden Type Conference Article
  Year 2012 Publication Proceedings of the 2. International Equine Science Meeting Abbreviated Journal (up) Proc. 2. Int. Equine. Sci. Mtg  
  Volume in press Issue Pages  
  Keywords  
  Abstract Verhalten und Ökologie der 6 rezenten Equiden sind in vieler Hinsicht identisch, jedoch in der Sozialen Organisation haben 2 deutliche verschiedene Formen evoluiert, die beide an das Leben in den semi-ariden und ariden Lebensräumen angepasst sind, wo sie zu säsonalen oder opportunistischen Wanderungen gezwungen sind.

Die Verbreitungsgebiete der verschiedenen Arten überlappen, in Südafrika und Namibia von Bergzebra Equus zebra und Steppenzebra E. quagga, in Kenya und Äthiopien von Steppenzebra und Grevy-Zebra E. grevyi, in Äthipien und Somalia von Grevy-Zebra und Afrikanischem Wildesel E. africanus, in China und der Mongolei Asiatischer Wildesel E. hemionus und Przewalski-Pferd E. przewalskii. Obwohl die Vertreter der verschiedenen Arten in den Überschneidungsgebieten die gleichen Ressourcen wie Wasser und Weide nutzen, nehmen sie kaum Kontakt zueinander auf.

Die Vertreter von Typ 1, Steppenzebra Equus quagga, Bergzebra E..zebra, Pferd E przewalskii, leben in nicht-territorialen , dauerhaften 1- Hengst- Familien, in Hengstgruppen und als Einzelgänger.. Die Familienhengste haben die alleinigen Paarungsrechte mit den Stuten in ihrem Harem. Dieser besteht aus bis zu ca. 6 nicht-verwandten Stuten nebst ihren Nachkommen und kann bis 20 Mitglieder haben.

Stuten bleiben bis zu ihrem Tod im Harem..Hengste können mit 5-6 Jahren einen Harem erobern oder gründen, können gleichfalls bis zum Tod die Familie begleiten, werden aber meist vorher von einem anderen Hengst ersetzt. Harems sind auch ohne Hengst stabil, ein Hinweis, dass die Stuten freiwilling im Harem sind und bleiben.. Junge Stuten verlassen ihre elterliche Familie und schliessen sich einem anderen Harem an..Beim Steppenzebra werden die Jungstuten während eines Östrus (Rosse) von Bewerbern entführt, gegen den Widerstand des Familenhengstes = Vaters. Bewerber sind Junggesellen, die so eine Familie gründen, und Familienhengste, die so ihren Harem vergrössern. Junghengste verlassen mit 2-3Jahren ihre elterliche Familie und schliessen sich Jungesellengruppen an, aus denen sich die Familenhengste rekrutieren.

In der Gruppe besteht eine Rangordnung mit dem Henst in der alpha-Position. Sie beruht aud individuellem Kennen und Erkennen der Mitglieder.

Bei Typ 2, Grevy-Zebra, Afrikanischer und Asiatischer Wildesel, monopolisieren Hengste über Jahre Territorien von 10 und mehr km2 , in denen sie die alleinigen Paarungsrechte haben. Territoriale Hengste tolerieren Artgenossen, auch erwachsene Hengste, soweit diese sich unterlegen verhalten. Oder sie stellen sich zum Kampf um den Besitz des Territoriums, eine Vorbedingung für die Fortpflanzung. Stuten im Östrus können von mehreren Hengsten begattet werden, wenn sie sich in deren Territorien aufhalten bzw diese durchwandern.

Stuten und Fohlen und nicht-territoriale Hengste schliessen sich zu anonymen instabilen Gruppen oder Herden zusammen. Feste dauerhafte Bindungen bestehen nur zwischen Stute und Fohlen. Hengste verlassen ihr Territorium für Stunden, Tage, im Extrem auch Monate, um zu Wasserstellen oder Weidegründen zu ziehen, sind aber bei Rückkehr wieder unangefochtene Besitzer.
 
  Address  
  Corporate Author Klingel, H . Thesis  
  Publisher Xenophon Publishing Place of Publication Wald Editor Krueger, K.  
  Language Deutscht Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN 978-3-9808134-26 Medium  
  Area Expedition Conference IESM 2012  
  Notes Public Day Approved no  
  Call Number Equine Behaviour @ team @ Serial 5437  
Permanent link to this record
 

 
Author Ahmadinejad, M., Tavakoli, S. pdf  openurl
  Title Common injuries in athletic horses in Tehran‘s riding clubs Type Conference Article
  Year 2012 Publication Proceedings of the 2. International Equine Science Meeting Abbreviated Journal (up) Proc. 2. Int. Equine. Sci. Mtg  
  Volume in press Issue Pages  
  Keywords  
  Abstract Various forms of intensive sport activities places stresses on the musculoskeletal system of the horse while involve in any forms of the activity (race &/or training). The musculoskeletal system of the horse has an inherent ability to adapt to the demands of high speed exercise, though if a threshold in adaptive capacity is exceeded, then some forms of damages to the structures of the musculoskeletal system may result. In case, if the insult (race &/or training) continued, it may worsen the repair and adaptation process and put the horse at risk of more serious musculoskeletal injury.

The result of this research describe the finding of the study performed in different breeds of horses involved in various types of activity in Tehran’s riding clubs, concentrating on the types of injuries observed in those horses. The study was then focused on the types of injuries observed in various activities (events) horses involved in.

Totally 400 horses took part in various activities during race season (March – September) in Tehran’s riding clubs, out of which 26 horses injured, in most of which musculoskeletal system of the fore limbs were involved.

From the sexual aspect of the study the percentages of the stallions were more (54%) when compared to the mares (46%). In this study the relation between the sex, breed, age and the weight of the horses with anatomical site of the injury, outcome of the injury, climate and the type of the event (jumping, polo etc.) were studied and compare with each other.

Bibliography:

Hill AE, Stover SM, Gardner IA, Kane AJ, Whitcomb MB, Emerson AG, 2001. Risk factors for and outcomes non catastrophic suspensory apparatus injury in Thoroughbred race horse. J.A.V.M.A. 218, 1136-44

Johnson BJ 1993. A look at race horse breakdowns. J.Eq.Vet.Scie. 13, 129-32

Morse SJ. 1999. A longitudinal study of racing thoroughbreds; performance during the first year of racing. Aust.Vet.J. 77, 105-12

Peloso JG, Mundy GD, Cohen ND. 1994. Prevalence of, and factors associated with, musculoskeletal racing injuries of thoroughbreds. J.A.V.M.A. 204, 620-6
 
  Address  
  Corporate Author Ahmadinejad, M. Thesis  
  Publisher Place of Publication Editor Krueger, K.  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference IESM 2012  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5495  
Permanent link to this record
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