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| Author | Aberle, K. S. | ||||
| Title | Untersuchung der Verwandtschaftsverhältnisse, Inzucht und genetischen Distanzen bei den deutschen Kaltblutpferderassen | Type | Manuscript | ||
| Year | 2003 | Publication | Abbreviated Journal | ||
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| Corporate Author | Thesis | Ph.D. thesis | |||
| Publisher | Place of Publication | Hannover | Editor | ||
| Language | German | Summary Language | Original Title | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5185 | ||
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| Author | van Duijn, M. A.J. | ||||
| Title | Software for Social Network Analysis | Type | Manuscript | ||
| Year | 2003 | Publication | Abbreviated Journal | ||
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| Abstract | This chapter gives a state-of-the art overview of available (free and commercial) software for social network analysis as of fall 2003. It reviews and compares six programs, illustrating their functionality with example data. Data manipulation options and available support are also discussed. Furthermore, seventeen other, of which nine special-purpose, software packages and ve software routine packages for general statistical software are reviewed brie y. The chapter concludes with some recommendations. |
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| Publisher | Heymans Institute/DPMG | Place of Publication | University of Groningen | Editor | |
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5205 | ||
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| Author | Kubinyi, E.; Topál, J.; Miklósi, Á.; Csányi, V. | ||||
| Title | Dogs (Canis familiaris) learn their owners via observation in a manipulation task. | Type | Journal Article | ||
| Year | 2003 | Publication | Journal of Comparative Psychology | Abbreviated Journal | J. Comp. Psychol. |
| Volume | 117 | Issue | 2 | Pages | 156-165 |
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| Abstract | Eighty-seven pet dogs (Canis familiaris) were involved in an experiment in which they had to solve a task to obtain a ball. After witnessing a full demonstration by their owner (10 times pushing the handle of the box, which released a ball), most dogs preferred to touch the handle sooner and more frequently in comparison with other parts of the box, and they used the handle to get the ball. In contrast dogs in 3 control groups developed their own respective methods. The lack of emergence of the ball and playing after the demonstration did not affect the learning performance strongly. This suggests that in dogs the outcome of a demonstration plays only a restricted role in the manifestation of social learning. (PsycINFO Database Record (c) 2010 APA, all rights reserved) | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5210 | ||
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| Author | Newman, M.E.J. | ||||
| Title | The Structure and Function of Complex Networks | Type | Journal Article | ||
| Year | 2003 | Publication | SIAM Review | Abbreviated Journal | SIAM Rev. |
| Volume | 45 | Issue | 2 | Pages | 167-256 |
| Keywords | networks; graph theory; complex systems; computer networks; social networks; random graphs; percolation theory | ||||
| Abstract | Inspired by empirical studies of networked systems such as the Internet, social networks, and biological networks, researchers have in recent years developed a variety of techniques and models to help us understand or predict the behavior of these systems. Here we review developments in this field, including such concepts as the small-world effect, degree distributions, clustering, network correlations, random graph models, models of network growth and preferential attachment, and dynamical processes taking place on networks. | ||||
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| Publisher | Siam | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5214 | ||
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| Author | de Villiers, M.S.; Richardson, P.R.K.; van Jaarsveld, A.S. | ||||
| Title | Patterns of coalition formation and spatial association in a social carnivore, the African wild dog (Lycaon pictus) | Type | Journal Article | ||
| Year | 2003 | Publication | Journal of Zoology | Abbreviated Journal | J Zool |
| Volume | 260 | Issue | 4 | Pages | 377-389 |
| Keywords | coalitions; social systems; Carnivora; Lycaon pictus | ||||
| Abstract | In many social species, relationships within groups seem to be non-random but related to variables such as rank, kinship or sexual attractiveness. The endangered African wild dog Lycaon pictus is a social carnivore that lives in large, stable packs, and intra-pack associations might be expected to display similar patterns. We investigated patterns of coalition formation (support during dominance interactions, and partnership interactions) and resting associations between members of a captive pack of 19 wild dogs. The social organization of the captive pack was similar to that of free-ranging packs in many respects. Polyadic (group) incidents of coalition support were also observed in a free-ranging pack. Patterns of coalition formation in the captive pack were related to rank. Most aggressive interactions involved high-ranking individuals (particularly the alpha, beta and third-ranking males) and coalitionary support tended to reinforce the existing hierarchy. However, there was at least one example of support influencing a successful rank challenge. Support was affected by potential risks and benefits, the latter including dominance through association and revolutionary alliances. An even stronger pattern overlaid associations between pack members: coalitions and resting associations were strongest between members of the same age–sex cohort, and may have enabled the eventual dominance of younger pack members over adults. Among adults, coalitionary associations were sometimes overridden by intersexual relationships. The results from this captive pack suggest that wild dogs are sensitive to differences in competitive ability. This information, in conjunction with strong affiliative bonds between littermates, is used to manoeuvre for position in the social hierarchy. It may also be important during dispersal, in encounters with other dispersing groups of the same sex. Although most features of the social structure of the captive pack were comparable to those of free-ranging packs, aspects such as the influence of relatedness on coalition formation still need to be explored. | ||||
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| Publisher | Blackwell Publishing Ltd | Place of Publication | Editor | ||
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| ISSN | 1469-7998 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5249 | ||
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| Author | Lefebvre, L.; Bouchard, J. | ||||
| Title | Social learning about food in birds | Type | Book Chapter | ||
| Year | 2003 | Publication | The Biology of Traditions | Abbreviated Journal | |
| Volume | Issue | Pages | 94-126 | ||
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| Publisher | Cambridge University Press | Place of Publication | Cambridge | Editor | Fragaszy, D.M; Perry, S. |
| Language | Englisch | Summary Language | Original Title | ||
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| ISSN | ISBN | 978-0521815970 | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5471 | ||
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| Author | Tiefenbacher, S.; Lee, B.; Meyer, J.S.; Spealman, R.D. | ||||
| Title | Noninvasive technique for the repeated sampling of salivary free cortisol in awake, unrestrained squirrel monkeys | Type | Journal Article | ||
| Year | 2003 | Publication | American Journal of Primatology | Abbreviated Journal | Am. J. Primatol. |
| Volume | 60 | Issue | 2 | Pages | 69-75 |
| Keywords | saliva; cortisol; squirrel monkey; sampling technique; Hpa | ||||
| Abstract | The use of noninvasive measures of hypothalamic-pituitary-adrenal (HPA) axis function is of growing interest among preclinical and clinical investigators. This report describes a method for the repeated assessment of salivary free cortisol in awake, unrestrained squirrel monkeys (Saimiri sciureus) based on a saliva sampling technique previously developed for rhesus monkeys. Individually housed adult male squirrel monkeys were trained to chew on dental rope attached to a pole, from which saliva was extracted by centrifugation and analyzed for cortisol by radioimmunoassay (RIA). Eight of nine monkeys readily acquired the task, reliably providing adequate saliva samples for the assay. Salivary free cortisol levels were examined in these subjects under basal conditions and in response to two types of neuroendocrine challenge. Levels of salivary free cortisol showed relatively low intra- and interindividual variability, with mean individual morning levels ranging between 17.1 and 37.9 µg/dl. Squirrel monkeys demonstrated a consistent daily rhythm in salivary free cortisol ranging from a high of 27.4 ± 5.2 µg/dl (mean ± SEM) at 12 P.M. to a low of 7.5 ± 1.6 µg/dl at 6 P.M.. Intravenous (IV) challenges with 1 µg/kg ACTH, or 10 and 50 µg/kg CRF resulted in significant increases in salivary free cortisol. The described sampling technique provides a reliable and sensitive means for repeated measurement of HPA activity in unrestrained, awake squirrel monkeys. In addition, our findings illustrate several features of HPA system rhythmicity and reactivity using salivary cortisol instead of blood plasma or serum. Am. J. Primatol. 60:69–75, 2003. © 2003 Wiley-Liss, Inc. | ||||
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| Publisher | Wiley Subscription Services, Inc., A Wiley Company | Place of Publication | Editor | ||
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| ISSN | 1098-2345 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5573 | ||
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| Author | Galef, G.G. Jr. | ||||
| Title | Social learning: promotor or inhibitor of innovation? | Type | Book Chapter | ||
| Year | 2003 | Publication | Animal Intelligence | Abbreviated Journal | |
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| Publisher | Oxford University Press | Place of Publication | Oxford | Editor | Reader, S.M.; Laland, K. N. |
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5750 | ||
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| Author | Tang, Akaysha C. | ||||
| Title | A hippocampal theory of cerebral lateralization. | Type | Book Chapter | ||
| Year | 2003 | Publication | The asymmetrical brain | Abbreviated Journal | |
| Volume | Issue | Pages | 37-68 | ||
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| Publisher | MIT Press | Place of Publication | Massechusetts | Editor | Hugdahl K. and Davidson R.J. |
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| ISSN | ISBN | 0-262-58254-6 | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5753 | ||
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| Author | Tang, A.C.; Reeb, B.C.; Romeo, R.D.; McEwen, B.S. | ||||
| Title | Modification of Social Memory, Hypothalamic-Pituitary-Adrenal Axis, and Brain Asymmetry by Neonatal Novelty Exposure | Type | Journal Article | ||
| Year | 2003 | Publication | The Journal of Neuroscience | Abbreviated Journal | |
| Volume | 23 | Issue | 23 | Pages | 8254-8260 |
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| Abstract | Although corticosterone (a stress hormone) is known to influence social behavior and memory processes, little has been explored concerning its modulatory role in social recognition. In rats, social recognition memory for conspecifics typically lasts <2 hr when evaluated using a habituation paradigm. Using neonatal novelty exposure, a brief and transient early life stimulation method known to produce long-lasting changes in the hypothalamic-pituitary-adrenal axis, we found that social recognition memory was prolonged to at least 24 hr during adulthood. This prolonged social memory was paralleled by a reduction in the basal blood concentration of corticosterone. The same neonatal stimulation also resulted in a functional asymmetry expressed as a greater right-turn preference in a novel environment. Rats that preferred to turn right showed better social recognition memory. These inter-related changes in basal blood corticosterone concentration, turning asymmetry, and social recognition memory suggest that stress hormones and brain asymmetry are likely candidates for modulating social memory. Furthermore, given that neonatal stimulation has been shown to improve learning and memory performance primarily under aversive learning situations, the neonatal novelty exposure-induced enhancement in social recognition broadens the impact of early life stimulation to include the social domain. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5754 | ||
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