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| Author | Takimoto, A.; Kuroshima, H.; Fujita, K. | ||||
| Title | Capuchin monkeys (Cebus apella) are sensitive to others’ reward: an experimental analysis of food-choice for conspecifics | Type | Journal Article | ||
| Year | 2010 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 13 | Issue | 2 | Pages | 249-261 |
Keywords  |
Other-regarding preference – Prosocial behavior – Inequity aversion – Food sharing – Social sensitivity – Capuchin monkeys | ||||
| Abstract | Abstract The issue whether non-human primates have other-regarding preference and/or inequity aversion has been under debate. We investigated whether tufted capuchin monkeys are sensitive to others’ reward in various experimental food sharing settings. Two monkeys faced each other. The operator monkey chose one of two food containers placed between the participants, each containing a food item for him/herself and another for the recipient. The recipient passively received either high- or low-value food depending on the operator’s choice, whereas the operator obtained the same food regardless of his/her choice. The recipients were either the highest- or lowest-ranking member of the group, and the operators were middle-ranking. In Experiment 1, the operators chose the high-value food for the subordinate recipient more frequently than when there was no recipient, whereas they were indifferent in their choice for the dominant. This differentiated behavior could have been because the dominant recipient frequently ate the low-value food. In Experiment 2, we increased the difference in the value of the two food items so that both recipients would reject the low-value food. The results were the same as in Experiment 1. In Experiment 3, we placed an opaque screen in front of the recipient to examine effects of visual contact between the participants. The operators’ food choice generally shifted toward providing the low-value food for the recipient. These results suggest that capuchins are clearly sensitive to others’ reward and that they show other-regarding preference or a form of inequity aversion depending upon the recipients and the presence of visual contact. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5118 | ||
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| Author | Chaplin, S.J.; Gretgrix, L. | ||||
| Title | Effect of housing conditions on activity and lying behaviour of horses | Type | Journal Article | ||
| Year | 2010 | Publication | Abbreviated Journal | animal | |
| Volume | 4 | Issue | 5 | Pages | 792-795 |
| Keywords |
lying, behaviour, activity, equine, housing | ||||
| Abstract | Housing conditions for horses impose various levels of confinement, which may compromise welfare. Lying behaviour and activity can be used as welfare indicators for domestic animals and rebound behaviour suggests a build-up of motivation resulting from deprivation. The objective of this study was to determine if activity and lying behaviour of horses are affected by housing conditions and to investigate the occurrence of rebound behaviour after release from confinement. Eight horses were subjected, in pairs, to each of four experimental treatments; paddock (P), fully stabled (FS), partly stabled (PS) and yard (Y). Each horse received 6 days acclimatisation prior to the 24 h recording period. Time spent in lying and activity were electronically recorded using a tilt switch and motion sensor connected to a data logger worn on the horse's left foreleg. Time spent active during the first 5 min of release from stable to paddock in the PS treatment (days 1 and 5) and at the same time of day in the P treatment was used as a measure of rebound behaviour. Effect of housing conditions on total time spent active was highly significant (FS = 123 s, PS = 158 s, Y = 377 s, P = 779 s, P < 0.001). Housing conditions did not significantly affect total time spent lying (P = 0.646). Horses were significantly more active, compared with baseline paddock behaviour, on release from stabling on both days 1 (P = 0.006) and 5 (P = 0.025) of PS treatment. These results suggest that activity patterns of horses, but not lying behaviour, are affected by the housing conditions tested and that rebound activity occurs in horses after a period of confinement. | ||||
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| Publisher | Cambridge University Press | Place of Publication | Editor | ||
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| Series Volume | Series Issue | Edition | 2010/01/21 | ||
| ISSN | 1751-7311 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 6603 | ||
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| Author | van Schaik, C.P. | ||||
| Title | Social learning and culture in animals | Type | Book Chapter | ||
| Year | 2010 | Publication | Animal Behaviour: Evolution and Mechanisms | Abbreviated Journal | |
| Volume | Issue | Pages | 623-653 | ||
| Keywords |
Life Sciences | ||||
| Abstract | Most animals must learn some of the behaviours in their repertoire, and some must learn most. Although learning is often thought of as an individual exercise, in nature much learning is social, i.e. under the influence of conspecifics. Social learners acquire novel information or skills faster and at lower cost, but risk learning false information or useless skills. Social learning can be divided into learning from social information and learning through social interaction. Different species have different mechanisms of learning from social information, ranging from selective attention to the environment due to the presence of others to copying of complete motor sequences. In vertical (or oblique) social learning, naïve individuals often learn skills or knowledge from parents (or other adults), whereas horizontal social learning is from peers, either immatures or adults, and more often concerns eavesdropping and public information use. Because vertical social learning is often adaptive, maturing individuals often have a preference for it over individual exploration. The more cognitively demanding social learning abilities probably evolved in this context, in lineages where offspring show long association with parents and niches are complex. Because horizontal learning can be maladaptive, especially when perishable information has become outdated, animals must decide when to deploy social learning. Social learning of novel skills can lead to distinct traditions or cultures when the innovations are sufficiently rare and effectively transmitted socially. Animal cultures may be common but to date taxonomic coverage is insufficient to know how common. Cultural evolution is potentially powerful, but largely confined to humans, for reasons currently unknown. A general theory of culture is therefore badly needed. | ||||
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| Publisher | Springer Berlin Heidelberg | Place of Publication | Editor | Kappeler, P. | |
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| ISSN | ISBN | 978-3-642-02624-9 | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5268 | ||
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| Author | Kerth, G. | ||||
| Title | Group decision-making in animal societies | Type | Book Chapter | ||
| Year | 2010 | Publication | Animal Behaviour: Evolution and Mechanisms | Abbreviated Journal | |
| Volume | Issue | Pages | 241-265 | ||
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Life Sciences | ||||
| Abstract | Individuals need to coordinate their activities to benefit from group living. Thus group decisions are essential for societies, especially if group members cooperate with each other. Models show that shared (democratic) decisions outperform unshared (despotic) decisions, even if individuals disagree about actions. This is surprising as in most other contexts, differences in individual preferences lead to sex-, age-, or kin-specific behaviour. Empirical studies testing the predictions of the theoretical models have only recently begun to emerge. This applies particularly to group decisions in fission-fusion societies, where individuals can avoid decisions that are not in their interest. After outlining the basic ideas and theoretical models on group decision-making I focus on the available empirical studies. Originally most of the relevant studies have been on social insects and fish but recently an increasing number of studies on mammals and birds have been published, including some that deal with wild long-lived animals living in complex societies. This includes societies where group members have different interests, as in most mammals, and which have been less studied compared to eusocial insects that normally have no conflict among their colony members about what to do. I investigate whether the same decision rules apply in societies with conflict and without conflict, and outline open questions that remain to be studied. The chapter concludes with a synthesis on what is known about group decision-making in animals and an outlook on what I think should be done to answer the open questions. | ||||
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| Publisher | Springer Berlin Heidelberg | Place of Publication | Editor | Kappeler, P. | |
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| ISSN | ISBN | 978-3-642-02624-9 | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5381 | ||
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| Author | Rose-Meierhöfer, S.; Standke, K.; Hoffmann, G. | ||||
| Title | Auswirkungen verschiedener Gruppengrößen auf Bewegungsaktivität, Body Condition Score, Liege- und Sozialverhalten bei Jungpferden | Type | Journal Article | ||
| Year | 2010 | Publication | Züchtungskunde | Abbreviated Journal | Züchtungskunde |
| Volume | 82 | Issue | 4 | Pages | 282–291 |
| Keywords |
Liegen, Aktivität, Gruppenhaltung, Jungpferde, Sozialverhalten, Body Condition Score [Lying behaviour, activity behaviour, group housing, young horses, social behaviour, Body Condition Score] | ||||
| Abstract | Ziel der Untersuchung war es, herauszufinden, welche Auswirkungen eine Erhöhung der Gruppengröße bei Jungpferden auf die Bewegungsaktivität, das Liege- und Sozialverhalten und die Körperkondition hat. Hierfür wurden insgesamt 42 Pferde im Alter von ein bis zwei Jahren in Laufstallhaltung in die Untersuchung einbezogen. Die Jungpferde aus der Bewegungs- und Liegeverhaltensanalyse waren in zwei Kleingruppen (acht und 11 Tiere) und einer Großgruppe (23 Tiere) aufgestallt. In der Bewegungsaktivität waren deutliche Unterschiede zu erkennen. Es ließ sich ein positiver Einfluss einer höheren Tierzahl nachweisen, aber kein Einfluss des Alters. Beim Ruheverhalten konnten höhere Liegezeiten und -frequenzen mit einer Zunahme der Gruppengröße und eine Abnahme der Liegezeit mit zunehmendem Alter ermittelt werden. Eine Störung des Liegeverhaltens durch Gruppengrößen, die nicht der natürlichen Herdenstruktur des Pferdes entsprechen, wurde nicht nachgewiesen. Jedoch hatte die Haltung der Jährlinge in der großen Gruppe einen Anstieg der repulsiven Verhaltensweisen zur Konsequenz. Zudem zeigte die Bestimmung des Body Condition Scores Unterschiede in der Körperkondition bei den Jährlingen der Groß- bzw. der Kleingruppe. Einem Mangel an Bewegung, der für das Auftreten von Gliedmaßenerkrankungen und Verhaltensstörungen verantwortlich gemacht wird, kann durch die Haltung von Jungpferden in großen Gruppen entgegengewirkt werden. [It is often discussed that the inactivity of horses causes diseases of their musculoskeletal system. Due to these problems the objective of the investigation was to quantify if the size of a group has an effect on the behaviour of young horses. Data from 42 horses in the age of one to two years have been involved in the investigation. The data of two small groups were compared with data of one big group with 23 horses. The movement and lying behaviour of 28 horses were measured with ALT pedometers. The social behaviour of 33 yearlings was documented by direct observation. The results show that the median of the movement time of horses in group A is 82 minutes per day. In group B this increases to a median of 101 and group C reaches the highest median of 149. In the case of lying time an increasing group size leads to a longer duration and a higher frequency of lying, whereas an increase in the age reduces the lying duration. International research studies have shown that keeping of horses in big group husbandry systems is not very common by the owners of horses. In contrast these investigations have shown that horse keeping in big groups has no negative influence on the social behaviour and the Body Condition Score of young horses.] |
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5671 | ||
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| Author | Sueur, C.; Jacobs, A.; Amblard, F.; Petit, O.; King, A.J. | ||||
| Title | How can social network analysis improve the study of primate behavior? | Type | Journal Article | ||
| Year | 2010 | Publication | American Journal of Primatology | Abbreviated Journal | Am. J. Primatol. |
| Volume | 73 | Issue | 8 | Pages | 703-719 |
| Keywords |
interaction; association; social system; social structure; methodology; behavioral sampling | ||||
| Abstract | Abstract When living in a group, individuals have to make trade-offs, and compromise, in order to balance the advantages and disadvantages of group life. Strategies that enable individuals to achieve this typically affect inter-individual interactions resulting in nonrandom associations. Studying the patterns of this assortativity using social network analyses can allow us to explore how individual behavior influences what happens at the group, or population level. Understanding the consequences of these interactions at multiple scales may allow us to better understand the fitness implications for individuals. Social network analyses offer the tools to achieve this. This special issue aims to highlight the benefits of social network analysis for the study of primate behaviour, assessing it's suitability for analyzing individual social characteristics as well as group/population patterns. In this introduction to the special issue, we first introduce social network theory, then demonstrate with examples how social networks can influence individual and collective behaviors, and finally conclude with some outstanding questions for future primatological research. Am. J. Primatol. 73:703?719, 2011. ? 2011 Wiley-Liss, Inc. | ||||
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| Publisher | Wiley-Blackwell | Place of Publication | Editor | ||
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| ISSN | 0275-2565 | ISBN | Medium | ||
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| Notes | doi: 10.1002/ajp.20915 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 6410 | ||
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| Author | Gabor, V.; Gerken, M. | ||||
| Title | Horses use procedural learning rather than conceptual learning to solve matching to sample | Type | Journal Article | ||
| Year | 2010 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 126 | Issue | 3-4 | Pages | 119-124 |
| Keywords |
Horses; Concept learning; Visual discrimination; Cognition; Experimental design; Procedural learning | ||||
| Abstract | Research into higher cognitive abilities of the horse may be limited by developing the adequate experimental design. In this study four pony mares between 8 and 19 years old were included. Three of them reached the criterion to be tested in a new design of matching to sample using a black circle and a cross as visual cues attached to an apparatus. The attention was directed to the question of whether the animals are able to concept formation in a given time period or if their decisions depend on other cues or strategies. After familiarization to the testing area and the test procedure, the animals were given 27 sessions of 20 trials each during 14 weeks. While there was no preference for one of the stimuli used, horses showed a significant left sidedness. None of the mares reached the learning criterion of 80% correct answers in one session. However, the ponies showed procedural learning based on correction runs that were given between incorrect decisions, by then selecting the correct stimulus on the other side of the apparatus. This learning type arose in three individuals in session four, six and eleven, respectively. It is concluded that discrimination tasks may be biased by the involvement of unexpected learning strategies, which complicates the interpretation of such tests and may even mask possible conceptualization capabilities. | ||||
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| ISSN | 0168-1591 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5157 | ||
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| Author | Schmidt, A.; Biau, S.; Möstl, E.; Becker-Birck, M.; Morillon, B.; Aurich, J.; Faure, J.-M.; Aurich, C. | ||||
| Title | Changes in cortisol release and heart rate variability in sport horses during long-distance road transport | Type | Journal Article | ||
| Year | 2010 | Publication | Domestic Animal Endocrinology | Abbreviated Journal | Domest Anim Endocrinol |
| Volume | 38 | Issue | 3 | Pages | 179-189 |
| Keywords |
Horse; Transport; Cortisol; Heart rate variability | ||||
| Abstract | It is widely accepted that transport is stressful for horses, but only a few studies are available involving horses that are transported regularly and are accustomed to transport. We determined salivary cortisol immunoreactivity (IR), fecal cortisol metabolites, beat-to-beat (RR) interval, and heart rate variability (HRV) in transport-experienced horses (N = 7) in response to a 2-d outbound road transport over 1370 km and 2-d return transport 8 d later. Salivary cortisol IR was low until 60 min before transport but had increased (P < 0.05) 30 min before loading. Transport caused a further marked increase (P < 0.001), but the response tended to decrease with each day of transport. Concentrations of fecal cortisol metabolites increased on the second day of both outbound and return transports and reached a maximum the following day (P < 0.001). During the first 90 min on Day 1 of outbound transport, mean RR interval decreased (P < 0.001). Standard deviations of RR interval (SDRR) decreased transiently (P < 0.01). The root mean square of successive RR differences (RMSSD) decreased at the beginning of the outbound and return transports (P < 0.01), reflecting reduced parasympathetic tone. On the first day of both outbound and return transports, a transient rise in geometric HRV variable standard deviation 2 (SD2) occurred (P < 0.01), indicating increased sympathetic activity. In conclusion, transport of experienced horses leads to increased cortisol release and changes in heart rate and HRV, which is indicative of stress. The degree of these changes tended to be most pronounced on the first day of both outbound and return transport. | ||||
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| ISSN | 0739-7240 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5386 | ||
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| Author | Schmidt, A.; Möstl, E.; Wehnert, C.; Aurich, J.; Müller, J.; Aurich, C. | ||||
| Title | Cortisol release and heart rate variability in horses during road transport | Type | Journal Article | ||
| Year | 2010 | Publication | Hormones and Behavior | Abbreviated Journal | Horm. Behav. |
| Volume | 57 | Issue | 2 | Pages | 209-215 |
| Keywords |
Horse; Transport; Cortisol; Heart rate variability | ||||
| Abstract | Based on plasma cortisol concentrations it is widely accepted that transport is stressful to horses. So far, cortisol release during transport has not been evaluated in depth by non-invasive techniques such as analysis of salivary cortisol and faecal cortisol metabolites. Transport also causes changes in heart rate and heart rate variability (HRV). In this study, salivary cortisol, faecal cortisol metabolites, heart rate and HRV in horses transported by road for short (one and 3.5 h) and medium duration (8 h) were determined. With the onset of transport, salivary cortisol increased immediately but highest concentrations were measured towards the end of transport (4.1 ± 1.6, 4.5 ± 2.6, 6.5 ± 1.8 ng/ml in horses transported for one, 3.5 and 8 h, respectively). Faecal cortisol metabolite concentrations did not change during transport, but 1 day after transport for 3.5 and 8 h had increased significantly (p < 0.01), reflecting intestinal passage time. Compared to salivary cortisol, changes in faecal cortisol metabolites were less pronounced. Heart rate increased and beat-to-beat (RR) interval decreased (p < 0.05) with the onset of transport. Standard deviation of heart rate increased while root mean square of successive RR differences (RMSSD) decreased in horses transported for 3.5 (from 74 ± 5 to 45 ± 6 ms) and 8 h (from 89.7 ± 7 to 59 ± 7 ms), indicating a reduction in vagal tone. In conclusion, transport of horses over short and medium distances leads to increased cortisol release and changes in heart rate and HRV indicative of stress. The degree of these changes is related to the duration of transport. Salivary cortisol is a sensitive parameter to detect transient changes in cortisol release. | ||||
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| ISSN | 0018-506x | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5387 | ||
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| Author | Von PEINEN, K.; Wiestner, T.; Von RECHENBERG, B.; Weishaupt, M.A. | ||||
| Title | Relationship between saddle pressure measurements and clinical signs of saddle soreness at the withers | Type | Journal Article | ||
| Year | 2010 | Publication | Equine Veterinary Journal | Abbreviated Journal | |
| Volume | 42 | Issue | Pages | 650-653 | |
| Keywords |
horse; saddle sore; saddle pressure measurement; dry spots | ||||
| Abstract | Reasons for performing the study: Similar to human decubitus ulcers, local high pressure points from ill-fitting saddles induce perfusion disturbances of different degrees resulting in tissue hypoxia and alteration in sweat production. Objective: To relate the different clinical manifestations of saddle sores to the magnitude of saddle pressures at the location of the withers. Methods: Sixteen horses with dry spots after exercise (Group A) and 7 cases presented with acute clinical signs of saddle pressure in the withers area (Group B) were compared with a control group of 16 sound horses with well fitting saddles (Group C). All horses underwent a saddle pressure measurement at walk, trot and canter. Mean and maximal pressures in the area of interest were compared between groups within each gait. Results: Mean pressures differed significantly between groups in all 3 gaits. Maximal pressure differed between groups at trot; at walk and canter, however, the only significant difference was between Group C and Groups A and B, respectively, (P>0.05). Mean and maximal pressures at walk in Group A were 15.3 and 30.6 kPa, in Group B 24.0 and 38.9 kPa and in Group C 7.8 and 13.4 kPa, respectively; at trot in Group A 18.1 and 43.4 kPa, in Group B 29.7 and 53.3 kPa and in Group C 9.8 and 21.0 kPa, respectively; and at canter in Group A 21.4 and 48.9 kPa, in Group B 28.6 and 56.0 kPa and in Group C 10.9 and 24.7 kPa, respectively. Conclusion: The study shows that there is a distinguishable difference between the 3 groups regarding the mean pressure value, in all gaits. | ||||
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| Publisher | Blackwell Publishing Ltd | Place of Publication | Editor | ||
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| ISSN | 2042-3306 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5820 | ||
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