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Author |
Kenward, B.; Rutz, C.; Weir, A.A.S.; Kacelnik, A. |
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Title |
Development of tool use in New Caledonian crows: inherited action patterns and social influences |
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Journal Article |
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2006 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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72 |
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6 |
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1329-1343 |
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Abstract |
New Caledonian crows, Corvus moneduloides, are the most advanced avian tool makers and tool users. We previously reported that captive-bred isolated New Caledonian crows spontaneously use twig tools and cut tools out of Pandanus spp. tree leaves, an activity possibly under cultural influence in the wild. However, what aspects of these behaviours are inherited and how they interact with individual and social experience remained unknown. To examine the interaction between inherited traits, individual learning and social transmission, we observed the ontogeny of twig tool use in hand-reared juveniles. Successful food retrieval was preceded by stereotyped object manipulation action patterns that resembled components of the mature behaviour, demonstrating that tool-oriented behaviours in this species are an evolved specialization. However, there was also an effect of social learning: juveniles that had received demonstrations of twig tool use by their human foster parent showed higher levels of handling and insertion of twigs than did their naive counterparts; a choice experiment showed that they preferred to handle objects that they had seen being manipulated by their human foster parent. Our observations are consistent with the hypothesis that individual learning, cultural transmission and creative problem solving all contribute to the acquisition of the tool-oriented behaviours in the wild, but inherited species-typical action patterns have a greater role than has been recognized. |
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2103 |
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Author |
Galef,, Bennett G. |
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Title |
Why behaviour patterns that animals learn socially are locally adaptive |
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Journal Article |
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Year |
1995 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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49 |
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5 |
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1325-1334 |
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Recent models of the social transmission of behaviour by animals have repeatedly led their authors to the counterintuitive (and counterfactual) conclusion that traditional behaviour patterns in animals are often not locally adaptive. This deduction results from the assumption in such models that frequency of expression of socially learned behaviour patterns is not affected by rewards or punishments contingent upon their expression. An alternative approach to analysis of social learning processes, based on Staddon-Simmelhag's conditioning model, is proposed here. It is assumed that social interactions affect the probability of introduction of novel behaviour patterns into a naive individual's repertoire and that consequences of engaging in a socially learned behaviour determine whether that behaviour continues to be expressed. Review of several recently analysed instances of animal social learning suggests that distinguishing processes that introduce behaviour patterns into the repertoires of individuals from processes that select among behavioural alternatives aids in understanding observed differences in the longevity of various traditional behaviour patterns studied in both laboratory and field. Finally, implications of the present approach for understanding the role of social learning in evolutionary process are discussed. |
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refbase @ user @ |
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578 |
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Ramseyer, A.; Boissy, A.; Thierry, B.; Dumont, B. |
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Title |
Individual and social determinants of spontaneous group movements in cattle and sheep |
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Journal Article |
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2009 |
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animal |
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Animal |
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3 |
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09 |
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1319-1326 M3 - 10.1017/S1751731109004790 |
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Group-living animals travel together to collectively exploit the resources of their environment. This study investigates how social relationships and individual temperament traits affect movement orders in domestic cattle and sheep. We analysed spontaneous group movements occurring at pasture after a resting period in a group of 15 18-month-old Charolais heifers and a group of 19 1-year-old Romane ewe-lambs. For each species, animals had similar social experience and no kinship ties. Before that, animals were observed within the group to establish their social status (e.g. dominance and preferential relationships, and sociability), then in individual tests in order to assess their emotional traits. In both species, most individuals could initiate a group movement but some individuals were more successful than others in recruiting the rest of the group. Ewe-lambs, and to a lesser extent heifers, held preferential positions during travel. We did not find any significant correlations in either species between animal order and their position in the dominance hierarchy (heifers: P = 0.438; ewe-lambs: P = 0.574) while individuals linked by preferential bonds frequently followed each other during group movements (heifers: P < 0.001; ewe-lambs: P < 0.001). With regard to social traits, heifers with a low cohesion index, and with a lower number of partners with whom they develop frequent affinitive interactions, acted more frequently as ‘first movers’ (P = 0.040 and 0.023, respectively), as well as did ewe-lambs with a high spatial independency index (P = 0.002). Ewe-lambs with the highest cohesion indices were more frequently observed in front of the group while moving halfway between departure and arrival (P = 0.028). We did not find significant correlations between individual positions during group movements and emotional traits such as reactivity, boldness and fearfulness. We conclude that preferential bonds and individual traits related to social dependence were more influential in spontaneous group movements at pasture than were emotional traits and dominance status. |
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group movement; group order; social relationship; temperament; ungulates |
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Cambridge Journals Online |
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1751-7311 |
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Equine Behaviour @ team @ |
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5047 |
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Spagnoletti, N.; Visalberghi, E.; Verderane, M.P.; Ottoni, E.; Izar, P.; Fragaszy, D. |
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Title |
Stone tool use in wild bearded capuchin monkeys, Cebus libidinosus. Is it a strategy to overcome food scarcity? |
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Journal Article |
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2012 |
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Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
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83 |
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5 |
Pages |
1285-1294 |
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bearded capuchin; Cebus libidinosus; fallback food; necessity hypothesis; nut cracking; opportunity hypothesis; tool use |
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To determine whether tool use varied in relation to food availability in bearded capuchin monkeys, we recorded anvil and stone hammer use in two sympatric wild groups, one of which was provisioned daily, and assessed climatic variables and availability of fruits, invertebrates and palm nuts. Capuchins used tools to crack open encased fruits, mostly palm nuts, throughout the year. Significant differences between wet and dry seasons were found in rainfall, abundance of invertebrates and palm nuts, but not in fruit abundance. Catulè nuts were more abundant in the dry season. We tested the predictions of the necessity hypothesis (according to which tool use is maintained by sustenance needs during resource scarcity) and of the opportunity hypothesis (according to which tool use is maintained by repeated exposure to appropriate ecological conditions, such as preferred food resources necessitating the use of tools). Our findings support only the opportunity hypothesis. The rate of tool use was not affected by provisioning, and the monthly rate of tool use was not correlated with the availability of fruits and invertebrates. Conversely, all capuchins cracked food items other than palm nuts (e.g. cashew nuts) when available, and adult males cracked nuts more in the dry season when catulè nuts (the most common and exploited nut) are especially abundant. Hence, in our field site capuchins use tools opportunistically. |
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0003-3472 |
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no |
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Equine Behaviour @ team @ |
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5855 |
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Roberts, J.; Kacelnik, A.; Hunter, M.L. |
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A model of sound interference in relation to acoustic communication |
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1979 |
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Animal Behaviour. |
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Anim. Behav. |
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27 |
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Part 4 |
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1271-1273 |
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2124 |
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Kasuya, E. |
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Mann-Whitney U test when variances are unequal |
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Journal Article |
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2001 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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61 |
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6 |
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1247-1249 |
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0003-3472 |
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Equine Behaviour @ team @ |
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5048 |
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McLeod, P.G.; Huntingford, F.A. |
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Social rank and predator inspection in sticklebacks |
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1994 |
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Animal Behaviour. |
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Anim. Behav. |
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47 |
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5 |
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1238-1240 |
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refbase @ user @ |
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525 |
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h:, M.; Lévy, F.; Fortin, M.; Leterrier, C.; LansadLansade, L. |
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Stress and temperament affect working memory performance for disappearing food in horses, Equus caballus |
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2013 |
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Animal Behaviour |
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86 |
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6 |
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1233-1240 |
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delayed-response task emotion; equid; Equus caballus; fearfulness; individual difference; personality; stress; temperament |
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In the present study, we sought to determine the influence of stress and temperament on working memory for disappearing food in horses. After assessment of five dimensions of temperament, we tested working memory of horses using a delayed-response task requiring a choice between two food locations. Delays ranging from 0 to 20 s were tested. The duration of working memory for disappearing food was first characterized without stressors (N = 26). The horses were then divided into two groups and their performance was assessed under stressful (exposure to acute stressors prior to testing, N = 12) or control conditions (N = 12). Results showed that the duration of working memory for disappearing food lasted at least 20 s under nonstressful conditions, and that under stressful conditions this duration lasted less than 12 s. This stress-induced impairment confirms in a nonrodent species that working memory performance is very sensitive to exposure to stressors. In addition, working memory performance in horses is influenced by the temperamental dimension of fearfulness according to the state of stress: fearful horses showed better performance under control conditions and worse performance under stressful conditions than nonfearful horses. These findings are discussed in the context of the Yerkes–Dodson law of stress and performance. |
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0003-3472 |
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Equine Behaviour @ team @ |
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5746 |
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Gabor, V.; Gerken, M. |
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Title |
Shetland ponies (Equus caballus) show quantity discrimination in a matching-to-sample design |
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Journal Article |
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2014 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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17 |
Issue |
6 |
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1233-1243 |
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Numerical competence is one of the aspects of animal cognition with a long history of research interest, but few results are available for the horse. In the present study, we investigated the ability of three Shetland ponies to discriminate between different quantities of geometric symbols presented on a computer screen in a matching-to-sample arrangement. In Experiment 1, the ponies had to relate two similar quantities to another, paired in contrasts (1 vs. 2, 3 vs. 4 and 4 vs. 5) of the same stimulus (dot). Specific pairs of quantities (all differing by one) of up to five different geometrical symbols were displayed in Experiment 2. In each session, both quantities (more and less) were used as sample in such a way that each of the two quantities presented in one test served as positive and as negative stimulus, respectively. The three Shetland ponies were able to discriminate between the given quantities of dots by showing more than 80 % correct responses in two consecutive sessions. Only one of the ponies distinguished different shapes of geometric symbols at a level of 4 versus 5 items. The results show that all ponies were capable of visual quantity discrimination in the present matching-to-sample design, but task solving seemed more difficult when quantities were composed of heterogeneous stimuli. The present results confirm our hypothesis that the ponies based their decision on the matching concept of sameness and were not biased by a spontaneous preference for higher quantities. |
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1435-9456 |
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Equine Behaviour @ team @ Gabor2014 |
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6174 |
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Boogert, N.J.; Reader, S.M.; Laland, K.N. |
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The relation between social rank, neophobia and individual learning in starlings |
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2006 |
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Animal Behaviour. |
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Anim. Behav. |
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72 |
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6 |
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1229-1239 |
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Researchers with diverse interests in topics ranging from the formation of dominance hierarchies and social intelligence to animal personalities have predicted specific, and often conflicting, relations between social rank, neophobia and learning ability. We investigated the relations between these variables in captive groups of wild-caught starlings, Sturnus vulgaris, adopting a multidimensional approach to social rank and neophobia. Both agonistic and competitive rank orders were determined for each group and we tested individuals in the absence of their groupmates for object neophobia, latency to feed in a novel environment and performance on an extractive foraging task. In each starling group, the fastest learners occupied the highest competitive ranks, supporting the hypothesis that cognitive ability is positively correlated with social dominance. Competitive rank orders, however, did not correlate significantly with agonistic rank orders. Situation-specific foraging neophobia was suggested: individuals showed consistency in their latencies to feed near a variety of novel objects, but no significant correlation was found between this measure of object neophobia and latency to feed in a novel environment. Starlings fastest to feed in the novel environment were fastest in solving the foraging task. We discuss the implications of these findings for researchers studying hierarchy formation in animal groups, social intelligence and animal personalities. |
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yes |
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Equine Behaviour @ team @ room B 3.029 |
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2074 |
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