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| Author |
Clayton, H.M.; Hampson, A.; Fraser, P.; White, A.; Egenvall, A. |
| Title |
Comparison of rider stability in a flapless saddle versus a conventional saddle |
Type |
Journal Article |
| Year |
2018 |
Publication |
Plos One |
Abbreviated Journal |
Plos One |
| Volume |
13 |
Issue |
6 |
Pages |
e0196960 |
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| Abstract |
The purpose of a saddle is to improve the rider's safety, security, and comfort, while distributing the forces exerted by the rider and saddle over a large area of the horse's back without focal pressure points. This study investigates the effects on rider stability of an innovative saddle design that differs from a conventional saddle in having no flaps. Five horses were ridden by their regular rider in their usual saddle and in a flapless saddle. A pressure mat (60 Hz) placed between the saddle and the horse's back was used to determine the position of the center of pressure, which represents the centroid of pressure distribution on the horse's back. Data were recorded as five horses were ridden at collected and extended walk, trot and canter in a straight line. Data strings were split into strides with 5 strides analysed per horse/gait/type. For each stride the path of the rider's center of pressure was plotted, maximal and minimal values in the anteroposterior and mediolateral directions were extracted, and ranges of motion in anteroposterior and mediolateral directions were calculated. Differences between the conventional and flapless saddles were analysed using mixed models ANOVA. Speed and stride length of each gait did not differ between saddles. Compared with the conventional saddle, the flapless saddle was associated with significant reductions in range of motion of the rider's center of pressure in the mediolateral direction in all gaits and in the anteroposterior direction in collected trot, extended trot and extended canter. The improved stability was thought to result from the absence of saddle flaps allowing the rider's thighs to lie in more adducted positions, which facilitated the action of the lumbopelvic-hip musculature in stabilizing and controlling translations and rotations of the pelvis and trunk. The closer contact between rider and horse may also have augmented the transfer of haptic information. |
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Public Library of Science |
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Equine Behaviour @ team @ |
Serial |
6423 |
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| Author |
Devinsky, O.; Boesch, J.M.; Cerda-Gonzalez, S.; Coffey, B.; Davis, K.; Friedman, D.; Hainline, B.; Houpt, K.; Lieberman, D.; Perry, P.; Prüss, H.; Samuels, M.A.; Small, G.W.; Volk, H.; Summerfield, A.; Vite, C.; Wisniewski, T.; Natterson-Horowitz, B. |
| Title |
A cross-species approach to disorders affecting brain and behaviour |
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Journal Article |
| Year |
2018 |
Publication |
Nature Reviews Neurology |
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| Abstract |
Structural and functional elements of biological systems are highly conserved across vertebrates. Many neurological and psychiatric conditions affect both humans and animals. A cross-species approach to the study of brain and behaviour can advance our understanding of human disorders via the identification of unrecognized natural models of spontaneous disorders, thus revealing novel factors that increase vulnerability or resilience, and via the assessment of potential therapies. Moreover, diagnostic and therapeutic advances in human neurology and psychiatry can often be adapted for veterinary patients. However, clinical and research collaborations between physicians and veterinarians remain limited, leaving this wealth of comparative information largely untapped. Here, we review pain, cognitive decline syndromes, epilepsy, anxiety and compulsions, autoimmune and infectious encephalitides and mismatch disorders across a range of animal species, looking for novel insights with translational potential. This comparative perspective can help generate novel hypotheses, expand and improve clinical trials and identify natural animal models of disease resistance and vulnerability. |
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1759-4766 |
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Equine Behaviour @ team @ Devinsky2018 |
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6420 |
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Frère, C.H.; Krützen, M.; Mann, J.; Connor, R.C.; Bejder, L.; Sherwin, W.B. |
| Title |
Social and genetic interactions drive fitness variation in a free-living dolphin population |
Type |
Journal Article |
| Year |
2010 |
Publication |
Proc Natl Acad Sci USA |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
| Volume |
107 |
Issue |
46 |
Pages |
19949-19954 |
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The evolutionary forces that drive fitness variation in species are of considerable interest. Despite this, the relative importance and interactions of genetic and social factors involved in the evolution of fitness traits in wild mammalian populations are largely unknown. To date, a few studies have demonstrated that fitness might be influenced by either social factors or genes in natural populations, but none have explored how the combined effect of social and genetic parameters might interact to influence fitness. Drawing from a long-term study of wild bottlenose dolphins in the eastern gulf of Shark Bay, Western Australia, we present a unique approach to understanding these interactions. Our study shows that female calving success depends on both genetic inheritance and social bonds. Moreover, we demonstrate that interactions between social and genetic factors also influence female fitness. Therefore, our study represents a major methodological advance, and provides critical insights into the interplay of genetic and social parameters of fitness. |
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Equine Behaviour @ team @ |
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6412 |
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| Author |
Jerison H. J. |
| Title |
Intelligence and Evolutionary Biology |
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Book Whole |
| Year |
1988 |
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Jerison H. J., Jerison, J. |
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no |
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Equine Behaviour @ team @ |
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6402 |
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Liberg, O.; Chapron, G.; Wabakken, P.; Pedersen, H.C.; Hobbs, N.T.; Sand, H. |
| Title |
Shoot, shovel and shut up: cryptic poaching slows restoration of a large carnivore in Europe |
Type |
Journal Article |
| Year |
2012 |
Publication |
Proc Biol Sci |
Abbreviated Journal |
Proc. R. Soc. Lond. B |
| Volume |
279 |
Issue |
1730 |
Pages |
910-915 |
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Poaching is a widespread and well-appreciated problem for the conservation of many threatened species. Because poaching is illegal, there is strong incentive for poachers to conceal their activities, and consequently, little data on the effects of poaching on population dynamics are available. Quantifying poaching mortality should be a required knowledge when developing conservation plans for endangered species but is hampered by methodological challenges. We show that rigorous estimates of the effects of poaching relative to other sources of mortality can be obtained with a hierarchical state-space model combined with multiple sources of data. Using the Scandinavian wolf (Canis lupus) population as an illustrative example, we show that poaching accounted for approximately half of total mortality and more than two-thirds of total poaching remained undetected by conventional methods, a source of mortality we term as 'cryptic poaching'. Our simulations suggest that without poaching during the past decade, the population would have been almost four times as large in 2009. Such a severe impact of poaching on population recovery may be widespread among large carnivores. We believe that conservation strategies for large carnivores considering only observed data may not be adequate and should be revised by including and quantifying cryptic poaching. |
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Equine Behaviour @ team @ |
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6380 |
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Zhang, Y.; Cao, Q.S.; Rubenstein, D.I.; Zang, S.; Songer, M.; Leimgruber, P.; Chu, H.; Cao, J.; Li, K.; Hu, D. |
| Title |
Water Use Patterns of Sympatric Przewalski's Horse and Khulan: Interspecific Comparison Reveals Niche Differences |
Type |
Journal Article |
| Year |
2015 |
Publication |
Plos One |
Abbreviated Journal |
Plos One |
| Volume |
10 |
Issue |
7 |
Pages |
e0132094 |
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Acquiring water is essential for all animals, but doing so is most challenging for desert-living animals. Recently Przewalski's horse has been reintroduced to the desert area in China where the last wild surviving member of the species was seen before it vanished from China in the1960s. Its reintroduction placed it within the range of a close evolutionary relative, the con-generic Khulan. Determining whether or not these two species experience competition and whether or not such competition was responsible for the extinction of Przewalski's horses in the wild over 50 years ago, requires identifying the fundamental and realized niches of both species. We remotely monitored the presence of both species at a variety of water points during the dry season in Kalamaili Nature Reserve, Xinjiang, China. Przewalski's horses drank twice per day mostly during daylight hours at low salinity water sources while Khulans drank mostly at night usually at high salinity water points or those far from human residences. Spatial and temporal differences in water use enables coexistence, but suggest that Przewalski's horses also restrict the actions of Khulan. Such differences in both the fundamental and realized niches were associated with differences in physiological tolerances for saline water and human activity as well as differences in aggression and dominance. |
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Public Library of Science |
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Equine Behaviour @ team @ |
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6377 |
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Range, F.; Möslinger, H.; Virányi, Z. |
| Title |
Domestication has not affected the understanding of means-end connections in dogs |
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Journal Article |
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2012 |
Publication |
Anim Cogn |
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15 |
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Equine Behaviour @ team @ Range2012 |
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6322 |
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| Author |
O'Brien, P.H. |
| Title |
Feral goat social organization: a review and comparative analysis |
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Journal Article |
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1988 |
Publication |
Appl Anim Behav Sci |
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21 |
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Equine Behaviour @ team @ O'Brien1988 |
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6270 |
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| Author |
Frank, H.; Frank, M.G. |
| Title |
On the effects of domestication on canine social development and behavior |
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Journal Article |
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1982 |
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Appl Anim Ethol |
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8 |
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Equine Behaviour @ team @ Frank1982 |
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6259 |
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Frank, H. |
| Title |
Evolution of canine information processing under conditions of natural and artificial selection |
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Journal Article |
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1980 |
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Z Tierpsychol |
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5 |
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Equine Behaviour @ team @ Frank1980 |
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6243 |
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