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Author Zajonc, R.B.
Title Social Facilitation Type Journal Article
Year 1965 Publication Science Abbreviated Journal Science
Volume 149 Issue 3681 Pages 269-274
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Abstract 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf
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Call Number Equine Behaviour @ team @ Serial 6565
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Author Pongrácz, P.; Miklósi, Á.; Kubinyi, E.; Gurobi, K.; Topál, J.; Csányi, V.
Title Social learning in dogs: the effect of a human demonstrator on the performance of dogs in a detour task Type Journal Article
Year 2001 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 62 Issue 6 Pages 1109-1117
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Abstract We recorded the behaviour of dogs in detour tests, in which an object (a favourite toy) or food was placed behind a V-shaped fence. Dogs were able to master this task; however, they did it more easily when they started from within the fence with the object placed outside it. Repeated detours starting from within the fence did not help the dogs to obtain the object more quickly if in a subsequent trial they started outside the fence with the object placed inside it. While six trials were not enough for the dogs to show significant improvement on their own in detouring the fence from outside, demonstration of this action by humans significantly improved the dogs' performance within two-three trials. Owners and strangers were equally effective as demonstrators. Our experiments show that dogs are able to rely on information provided by human action when confronted with a new task. While they did not copy the exact path of the human demonstrator, they easily adopted the detour behaviour shown by humans to reach their goal.
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Call Number refbase @ user @ Serial 847
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Author Chapron, G.; Treves, A.
Title Blood does not buy goodwill: allowing culling increases poaching of a large carnivore Type Journal Article
Year 2016 Publication Proc Biol Sci Abbreviated Journal Proc. R. Soc. Lond. B
Volume 283 Issue 1830 Pages
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Abstract Quantifying environmental crime and the effectiveness of policy interventions is difficult because perpetrators typically conceal evidence. To prevent illegal uses of natural resources, such as poaching endangered species, governments have advocated granting policy flexibility to local authorities by liberalizing culling or hunting of large carnivores. We present the first quantitative evaluation of the hypothesis that liberalizing culling will reduce poaching and improve population status of an endangered carnivore. We show that allowing wolf (Canis lupus) culling was substantially more likely to increase poaching than reduce it. Replicated, quasi-experimental changes in wolf policies in Wisconsin and Michigan, USA, revealed that a repeated policy signal to allow state culling triggered repeated slowdowns in wolf population growth, irrespective of the policy implementation measured as the number of wolves killed. The most likely explanation for these slowdowns was poaching and alternative explanations found no support. When the government kills a protected species, the perceived value of each individual of that species may decline; so liberalizing wolf culling may have sent a negative message about the value of wolves or acceptability of poaching. Our results suggest that granting management flexibility for endangered species to address illegal behaviour may instead promote such behaviour.
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Call Number Equine Behaviour @ team @ Serial 6379
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Author 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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Abstract 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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Call Number Equine Behaviour @ team @ Serial 6380
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Author Webster, M.M.; Laland, K.N.
Title Social learning strategies and predation risk: minnows copy only when using private information would be costly Type Journal Article
Year 2008 Publication Proc Biol Sci Abbreviated Journal Proc. R. Soc. Lond. B
Volume 275 Issue 1653 Pages 2869-2876
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Abstract Animals can acquire information from the environment privately, by sampling it directly, or socially, through learning from others. Generally, private information is more accurate, but expensive to acquire, while social information is cheaper but less reliable. Accordingly, the 'costly information hypothesis' predicts that individuals will use private information when the costs associated with doing so are low, but that they should increasingly use social information as the costs of using private information rise. While consistent with considerable data, this theory has yet to be directly tested in a satisfactory manner. We tested this hypothesis by giving minnows (Phoxinus phoxinus) a choice between socially demonstrated and non-demonstrated prey patches under conditions of low, indirect and high simulated predation risk. Subjects had no experience (experiment 1) or prior private information that conflicted with the social information provided by the demonstrators (experiment 2). In both experiments, subjects spent more time in the demonstrated patch than in the non-demonstrated patch, and in experiment 1 made fewer switches between patches, when risk was high compared with when it was low. These findings are consistent with the predictions of the costly information hypothesis, and imply that minnows adopt a 'copy-when-asocial-learning-is-costly' learning strategy.
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Call Number Equine Behaviour @ team @ Serial 6196
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Author Knolle, F.; Goncalves, R.P.; Morton, A.J.
Title Sheep recognize familiar and unfamiliar human faces from two-dimensional images Type Journal Article
Year 2017 Publication Royal Society Open Science Abbreviated Journal
Volume 4 Issue 11 Pages
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Abstract One of the most important human social skills is the ability to recognize faces. Humans recognize familiar faces easily, and can learn to identify unfamiliar faces from repeatedly presented images. Sheep are social animals that can recognize other sheep as well as familiar humans. Little is known, however, about their holistic face-processing abilities. In this study, we trained eight sheep (Ovis aries) to recognize the faces of four celebrities from photographic portraits displayed on computer screens. After training, the sheep chose the 'learned-familiar' faces rather than the unfamiliar faces significantly above chance. We then tested whether the sheep could recognize the four celebrity faces if they were presented in different perspectives. This ability has previously been shown only in humans. Sheep successfully recognized the four celebrity faces from tilted images. Interestingly, there was a drop in performance with the tilted images (from 79.22 ± 7.5% to 66.5 ± 4.1%) of a magnitude similar to that seen when humans perform this task. Finally, we asked whether sheep could recognize a very familiar handler from photographs. Sheep identified the handler in 71.8 ± 2.3% of the trials without pretraining. Together these data show that sheep have advanced face-recognition abilities, comparable with those of humans and non-human primates.
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Call Number Equine Behaviour @ team @ Serial 6197
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Author Smolla, M.; Alem, S.; Chittka, L.; Shultz, S.
Title Copy-when-uncertain: bumblebees rely on social information when rewards are highly variable Type Journal Article
Year 2016 Publication Biology letters Abbreviated Journal Biol. Lett.
Volume 12 Issue 6 Pages
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Abstract To understand the relative benefits of social and personal information use in foraging decisions, we developed an agent-based model of social learning that predicts social information should be more adaptive where resources are highly variable and personal information where resources vary little. We tested our predictions with bumblebees and found that foragers relied more on social information when resources were variable than when they were not. We then investigated whether socially salient cues are used preferentially over non-social ones in variable environments. Although bees clearly used social cues in highly variable environments, under the same conditions they did not use non-social cues. These results suggest that bumblebees use a 'copy-when-uncertain' strategy.
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Call Number Equine Behaviour @ team @ Serial 6198
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Author Tomkins, L.M.; McGreevy, P.D.; Branson, N.J.
Title Lack of standardization in reporting motor laterality in the domestic dog (Canis familiaris) Type Journal Article
Year 2010 Publication Journal of Veterinary Behaviour Abbreviated Journal
Volume 5 Issue 5 Pages 235-239
Keywords dog; motor laterality; lateralization; paw preference; standardization
Abstract Over the past 2 decades, numerous studies have been undertaken to assess motor laterality in the domestic dog. In anticipation of growth in this area of enquiry, we decided to review the literature on canine motor biases to identify any shortcomings, reflect on the lessons to be learned from and offer ways forward for future research into canine laterality. The aim of this review is to (i) summarize motor laterality findings in the dog, (ii) highlight areas lacking in standardization, and (iii) propose necessary criteria for future tests and global reporting protocols. Our review of the literature highlighted the lack of standardization between studies in task selection, sample size, number of behavior scores recorded, and the methods by which motor laterality were classified and reported. This review illustrates the benefits of standardizing methods of motor laterality assessment so that comparisons can be made between the populations sampled. By adopting such an approach, researchers should mutually benefit as motor laterality data could then be compared and subjected to meta-analysis.
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ISSN 1558-7878 ISBN Medium
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Call Number Equine Behaviour @ team @ S1558-7878(10)00038-9 Serial 5378
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Author Tomkins, L.M.; Williams, K.A.; Thomson, P.C.; McGreevy, P.D.
Title Sensory Jump Test as a measure of sensory (visual) lateralization in dogs (Canis familiaris) Type Journal Article
Year 2010 Publication Journal of Veterinary Behavior Abbreviated Journal
Volume 5 Issue 5 Pages 256-267
Keywords sensory lateralization; monocular vision; binocular vision; jump kinematics; dog
Abstract Sensory lateralization in dogs (n = 74) was investigated in this study using our innovation, the Sensory Jump Test. This required the modification of head halters to create three different ocular treatments (binocular, right, and left monocular vision) for eye preference assessment in a jumping task. Ten jumps were recorded as a jump set for each treatment. Measurements recorded included (i) launch and landing paws, (ii) type of jump, (iii) approach distance, (iv) clearance height of the forepaw, hindpaw, and the lowest part of the body to clear the jump, and (v) whether the jump was successful. Factors significantly associated with these jump outcomes included ocular treatment, jump set number, and replication number. Most notably, in the first jump set, findings indicated a left hemispheric dominance for the initial navigation of the Sensory Jump Test, as left monocular vision (LMV) compromised of jumping more than right monocular (RMV) and binocular vision, with a significantly reduced approach distance and forepaw clearance observed in dogs with LMV. However, by the third jump set, dogs undergoing LMV launched from a greater approach distance and with a higher clearance height, corresponding to an increase in success rate of the jump, in comparison with RMV and binocular vision dogs. A marginally non-significant RMV bias was observed for eye preference based on the laterality indices for approach distance (P = 0.060) and lowest body part clearance height (P = 0.067). A comparison between eye preference and launching or landing paws showed no association between these measures of sensory and motor laterality. To our knowledge, this is the first study to report on sensory lateralization in the dog, and furthermore, to compare both motor and sensory laterality in dogs.
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ISSN 1558-7878 ISBN Medium
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Call Number Equine Behaviour @ team @ S1558-7878(10)00019-5 Serial 5379
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Author Golynski, M.; Szczepanik, M.P.; Wilkolek, P.M.; Adamek, L.R.; Sitkowski, W.; Taszkun, I.
Title Influence of hair clipping on transepidermal water loss values in horses: a pilot study Type Journal Article
Year 2018 Publication Polish Journal of Veterinary Sciences Abbreviated Journal
Volume vol. 21 Issue No 1 Pages
Keywords horses; transepidermal water loss; clipping
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Publisher University of Warmia and Mazury in Olsztyn Place of Publication Editor
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Call Number Equine Behaviour @ team @ Serial 6612
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