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Pirault, P.; Danvy, S.; Verrier, E.; Leroy, G. |
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Title  |
Genetic Structure and Gene Flows within Horses: A Genealogical Study at the French Population Scale |
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Journal Article |
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2013 |
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Plos One |
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Plos One |
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8 |
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4 |
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e61544 |
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Since horse breeds constitute populations submitted to variable and multiple outcrossing events, we analyzed the genetic structure and gene flows considering horses raised in France. We used genealogical data, with a reference population of 547,620 horses born in France between 2002 and 2011, grouped according to 55 breed origins. On average, individuals had 6.3 equivalent generations known. Considering different population levels, fixation index decreased from an overall species FIT of 1.37%, to an average of -0.07% when considering the 55 origins, showing that most horse breeds constitute populations without genetic structure. We illustrate the complexity of gene flows existing among horse breeds, a few populations being closed to foreign influence, most, however, being submitted to various levels of introgression. In particular, Thoroughbred and Arab breeds are largely used as introgression sources, since those two populations explain together 26% of founder origins within the overall horse population. When compared with molecular data, breeds with a small level of coancestry also showed low genetic distance; the gene pool of the breeds was probably impacted by their reproducer exchanges. |
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Public Library of Science |
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Equine Behaviour @ team @ |
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6215 |
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Briefer, E.F.; Haque, S.; Baciadonna, L.; McElligott, A.G. |
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Title |
Goats excel at learning and remembering a highly novel cognitive task |
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2014 |
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Frontiers in Zoology |
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Front. Zool. |
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11 |
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1 |
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20 |
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The computational demands of sociality (maintaining group cohesion, reducing conflict) and ecological problems (extractive foraging, memorizing resource locations) are the main drivers proposed to explain the evolution cognition. Different predictions follow, about whether animals would preferentially learn new tasks socially or not, but the prevalent view today is that intelligent species should excel at social learning. However, the predictions were originally used to explain primate cognition, and studies of species with relatively smaller brains are rare. By contrast, domestication has often led to a decrease in brain size, which could affect cognition. In domestic animals, the relaxed selection pressures compared to a wild environment could have led to reduced social and physical cognition. Goats possess several features commonly associated with advanced cognition, such as successful colonization of new environments and complex fission-fusion societies. Here, we assessed goat social and physical cognition as well as long-term memory of a complex two-step foraging task (food box cognitive challenge), in order to investigate some of the main selection pressures thought to affect the evolution of ungulate cognition. |
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1742-9994 |
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Equine Behaviour @ team @ Briefer2014 |
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6376 |
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Baciadonna, L.; McElligott, A.G.; Briefer, E.F. |
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Goats favour personal over social information in an experimental foraging task |
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2013 |
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Peer J |
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1 |
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Equine Behaviour @ team @ Baciadonna2013 |
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6269 |
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Pérez-Barbería, F.J.; Gordon, I.J. |
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Gregariousness increases brain size in ungulates |
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2005 |
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Oecologia |
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145 |
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Equine Behaviour @ team @ Pérez-Barbería2005 |
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6258 |
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Whiten, A. |
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Imitation of the sequential structure of actions by chimpanzees |
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1998 |
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J Comp Psychol |
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11 |
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Equine Behaviour @ team @ Whiten1998 |
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6291 |
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Benson-Amram, S.; Holekamp, K.E. |
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Title |
Innovative problem solving by wild spotted hyenas |
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2012 |
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Proc R Soc B |
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Proc R Soc B |
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279 |
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4087-4095 |
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Equine Behaviour @ team @ Benson-Amram2012 |
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6266 |
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Thornton, A.; Samson, J. |
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Title |
Innovative problem solving in wild meerkats |
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2012 |
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Anim Behav |
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83 |
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Equine Behaviour @ team @ Thornton2012 |
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6267 |
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Emery, N.J.; Clayton, N.S.; Frith, C.D. |
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Title |
Introduction. Social intelligence: from brain to culture |
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2007 |
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Philos Trans R Soc B |
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Philos Trans R Soc B |
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362 |
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Equine Behaviour @ team @ Emery2007 |
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6302 |
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Author |
Kruska, D. |
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Mammalian domestication and its effect on brain structure and behavior |
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1988 |
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Intelligence and Evolutionary Biology |
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Springer-Verlag |
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New York |
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Jerison, H.J.; Jerison, I. |
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Equine Behaviour @ team @ Kruska1988 |
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6232 |
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Saunders, F.C.; McElligott, A.G.; Safi, K.; Hayden, T.J. |
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Title |
Mating tactics of male feral goats (Capra hircus): risks and benefits |
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2005 |
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Acta Ethol |
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8 |
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Equine Behaviour @ team @ Saunders2005 |
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6252 |
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