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Author |
Schneider, G.; Krueger, K. |
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Title |
Third-party interventions keep social partners from exchanging affiliative interactions with others |
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Journal Article |
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Year |
2012 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
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83 |
Issue |
2 |
Pages |
377-387 |
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Keywords |
Equus caballus; horse; rank; social bond; social network; third-party intervention |
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Abstract |
Third-party interventions are defined as the interruption of dyadic interactions by third animals through direct physical contact, interposing or threats. Previous studies focused on the analysis of interventions against agonistic encounters. However, there have been no evaluations of interventions against affiliative behaviours, particularly in relation to the intervening animal�s social relationships and its social and spatial position. Horses, Equus caballus, are an interesting model species, as interventions against affiliative interactions occur more frequently than against agonistic interactions. In this study, 64 feral horses displayed 67 interventions in affiliative interactions and eight interventions in agonistic interactions within the observation period. We analysed the interventions in affiliative encounters, and found that it was mainly higher-ranking females that intervened in the affiliative interactions of group mates in the stable horse harems. The intervening animals took an active part in affiliative and agonistic encounters within the group, but did not occupy particular social roles or spatial positions. They intervened in affiliative interactions in which group mates with which they had social bonds interacted with other members of the group. They targeted the nonbonded animal and approached the one with which they were socially bonded. We suggest some species use third-party interventions in affiliative interactions to prevent competition for preferred social interaction partners from escalating into more costly agonistic encounters. |
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0003-3472 |
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Call Number |
Equine Behaviour @ team @ |
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5492 |
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Author |
Thornton, A.; Samson, J. |
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Title |
Innovative problem solving in wild meerkats |
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Journal Article |
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Year |
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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Author |
Breitenmoser, U. |
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Title |
Large predators in the Alps: the fall and rise of man's competitors |
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1998 |
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Biol Conserv |
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83 |
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Equine Behaviour @ team @ Breitenmoser1998 |
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6450 |
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Jedrzejewski, W.; Schmidt, K.; Theuerkauf, J.; Jedrzejewska, B.; Selva, N.; Zub, K. |
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Title |
Kill rate and predation by wolves on ungulate populations in Bialowieza primeval forest (Poland) |
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Journal Article |
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2002 |
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Ecology |
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83 |
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Equine Behaviour @ team @ Jedrzejewski2002 |
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6481 |
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Author |
Cozzi, B.; Povinelli, M.; Ballarin, C.; Granato, A. |
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Title |
The Brain of the Horse: Weight and Cephalization Quotients |
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Journal Article |
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Year |
2014 |
Publication |
Brain, Behavior and Evolution |
Abbreviated Journal |
Brain Behav Evol |
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83 |
Issue |
1 |
Pages |
9-16 |
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Abstract |
The horse is a common domestic animal whose anatomy has been studied since the XVI century. However, a modern neuroanatomy of this species does not exist and most of the data utilized in textbooks and reviews derive from single specimens or relatively old literature. Here, we report information on the brain of Equus caballus obtained by sampling 131 horses, including brain weight (as a whole and subdivided into its constituents), encephalization quotient (EQ), and cerebellar quotient (CQ), and comparisons with what is known about other relevant species. The mean weight of the fresh brains in our experimental series was 598.63 g (SEM ± 7.65), with a mean body weight of 514.12 kg (SEM ± 15.42). The EQ was 0.78 and the CQ was 0.841. The data we obtained indicate that the horse possesses a large, convoluted brain, with a weight similar to that of other hoofed species of like mass. However, the shape of the brain, the noteworthy folding of the neocortex, and the peculiar longitudinal distribution of the gyri suggest an evolutionary specificity at least partially separate from that of the Cetartiodactyla (even-toed mammals and cetaceans) with whom Perissodactyla (odd-toed mammals) are often grouped. |
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0006-8977 |
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Equine Behaviour @ team @ |
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6592 |
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Author |
Squire, L. |
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Title |
Memory systems of the brain: a brief history and current perspective |
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Journal Article |
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Year |
2004 |
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Neurobiol Learn Mem |
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82 |
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Equine Behaviour @ team @ Squire2004 |
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6365 |
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Author |
van de Waal, E.; Bshary, R. |
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Title |
Social-learning abilities of wild vervet monkeys in a two-step task artificial fruit experiment |
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Journal Article |
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2011 |
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Anim Behav |
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81 |
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Equine Behaviour @ team @ van de Waal2011 |
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6262 |
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Author |
van de Waal, E.; Bshary, R. |
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Title |
Contact with human facilities appears to enhance technical skills in wild vervet monkeys (Chlorocebus aethiops) |
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Journal Article |
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Year |
2010 |
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Folia Primatol |
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81 |
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Equine Behaviour @ team @ van de Waal2010 |
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6265 |
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Author |
Shettleworth, S.J. |
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Title |
The evolution of comparative cognition: is the snark still a Boojum? |
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2009 |
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Behav Processes |
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80 |
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Equine Behaviour @ team @ Shettleworth2009 |
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6231 |
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Author |
Capitani, C.; Chynoweth, M.; Kusak, J.; Çoban, E.; Sekercioglu, Ç.H. |
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Title |
Wolf diet in an agricultural landscape of north-eastern Turkey |
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Journal Article |
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2016 |
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Mammalia |
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Mammalia |
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80 |
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3 |
Pages |
329-334 |
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Mammalia |
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80 |
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3 |
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Equine Behaviour @ team @ |
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6687 |
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