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Author Sullivan, R.M.
Title Hemispheric Asymmetry in Stress Processing in Rat Prefrontal Cortex and the Role of Mesocortical Dopamine Type Journal Article
Year 2004 Publication Stress Abbreviated Journal Stress
Volume 7 Issue 2 Pages 131-143
Keywords
Abstract The prefrontal cortex (PFC) is known to play an important role not only in the regulation of emotion,

but in the integration of affective states with appropriate modulation of autonomic and neuroendocrine

stress regulatory systems. The present review highlights findings in the rat which helps to elucidate the

complex nature of prefrontal involvement in emotion and stress regulation. The medial PFC is

particularly important in this regard and while dorsomedial regions appear to play a suppressive role in

such regulation, the ventromedial (particularly infralimbic) region appears to activate behavioral,

neuroendocrine and sympathetic autonomic systems in response to stressful situations. This may be

especially true of spontaneous stress-related behavior or physiological responses to relatively acute

stressors. The role of the medial PFC is somewhat more complex in conditions involving learned

adjustments to stressful situations, such as the extinction of conditioned fear responses, but it is clear

that the medial PFC is important in incorporating stressful experience for future adaptive behavior. It is

also suggested that mesocortical dopamine plays an important adaptive role in this region by preventing

excessive behavioral and physiological stress reactivity. The rat brain shows substantial hemispheric

specialization in many respects, and while the right PFC is normally dominant in the activation of

stress-related systems, the left may play a role in countering this activation through processes of

interhemispheric inhibition. This proposed basic template for the lateralization of stress regulatory

systems is suggested to be associated with efficient stress and emotional self-regulation, and also to be

shaped by both early postnatal experience and gender differences.
Address
Corporate Author Thesis
Publisher Informa Clin Med Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1025-3890 ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5356
Permanent link to this record
 
 
Author Robins, A.; Rogers, L.J.
Title Lateralized prey-catching responses in the cane toad, Bufo marinus: analysis of complex visual stimuli Type Journal Article
Year 2004 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 68 Issue 4 Pages 767-775
Keywords
Abstract We tested the responses of Bufo marinus to prey stimuli of varying visual complexity that were moved around the toads in either a clockwise or anticlockwise direction at 1.7 revolutions/min. Predatory responses directed at prey resembling an insect were frequent when the model insect moved clockwise across the visual midline into the right visual hemifield. In contrast, the toads tended to ignore such stimuli when they moved anticlockwise across the midline into the left hemifield. No such lateralization was found when a rectangular strip moved along its longest axis was presented in a similar way. The toads also directed more responses towards the latter stimulus than towards the insect prey. Hence, the results suggest that lateralized predatory responses occur for considered decisions on whether or not to respond to complex insect-like stimuli, but not for decisions on comparatively simple stimuli. We discuss similarities between the lateralized feeding responses of B. marinus and those of avian species, as support for the hypothesis that lateralized brain function in tetrapods may have arisen from a common lateralized ancestor.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0003-3472 ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5365
Permanent link to this record
 
 
Author Dingemanse, N.J.; de Goede, P.
Title The relation between dominance and exploratory behavior is context-dependent in wild great tits Type Journal Article
Year 2004 Publication Behavioral Ecology Abbreviated Journal Behav. Ecol.
Volume 15 Issue 6 Pages 1023-1030
Keywords
Abstract Individual differences in personality affect behavior in novel or challenging situations. Personality traits may be subject to selection because they affect the ability to dominate others. We investigated whether dominance rank at feeding tables in winter correlated with a heritable personality trait (as measured by exploratory behavior in a novel environment) in a natural population of great tits, Parus major. We provided clumped resources at feeding tables and calculated linear dominance hierarchies on the basis of observations between dyads of color-ringed individuals, and we used an experimental procedure to measure individual exploratory behavior of these birds. We show that fast-exploring territorial males had higher dominance ranks than did slow-exploring territorial males in two out of three samples, and that dominance related negatively to the distance between the site of observation and the territory. In contrast, fast-exploring nonterritorial juveniles had lower dominance ranks than did slow-exploring nonterritorial juveniles, implying that the relation between dominance and personality is context-dependent in the wild. We discuss how these patterns in dominance can explain earlier reported effects of avian personality on natal dispersal and fitness.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5390
Permanent link to this record
 
 
Author Gilbert-Norton, L.; Jule, K. Richards, G; Goto, K.
Title Social structure of pony (Equus caballus) mares in an all female herd on Lundy: analysis of dominance relationship and preferred associate. Type Journal Article
Year 2004 Publication Lundy Field Society Annual Report Abbreviated Journal
Volume 54 Issue 54 Pages 71--88
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5744
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Author Deingruber, K.
Title Auswirkungen von Schallbelastungen durch Freizeitlärm auf das Hörvermögen – experimentelle Untersuchungen am Meerschweinchen Type Manuscript
Year 2004 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract
Address
Corporate Author Thesis Ph.D. thesis
Publisher Ludwig-Maximilians-Universität München Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ ediss1932 Serial 5632
Permanent link to this record
 
 
Author Galef, J., Bennett G.; Whiskin, E.E.
Title Effects of environmental stability and demonstrator age on social learning of food preferences by young Norway rats Type Journal Article
Year 2004 Publication Animal Behaviour Abbreviated Journal Anim. Behav.
Volume 68 Issue 4 Pages 897-902
Keywords
Abstract We used socially learned food preferences of Norway rats, Rattus norvegicus, to examine two common predictions of formal models of social learning in animals: (1) that animals living in relatively stable environments should be more attentive to socially acquired information than animals living in highly variable environments, and (2) that older demonstrators should have greater influence than younger demonstrators on the behaviour of young observers. Old and young demonstrators were equally effective in modifying the food preferences of juveniles that interacted with them. However, food choices of rats that were moved daily from one cage to another and fed at unpredictable times for unpredictable periods were less affected by demonstrators than were rats maintained in stable environments. Our results thus provided experimental support for the first, but not the second, prediction from theory.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0003-3472 ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5610
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Author Zeitler-Feicht,; M. Walker, S.; Buxadé, C; Reiter, K.
Title Untersuchungen verschiedener Formen der Heuvorlage bei Pferden unter ethologischem Aspekt Type Book Chapter
Year 2004 Publication Aktuelle Arbeiten zur artgemäßen Tierhaltung Abbreviated Journal
Volume Issue Pages 209-216
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5658
Permanent link to this record
 
 
Author Zeitler-Feicht, M. H.; Walker, S.; Buxade, C.; Reiter, K.
Title Untersuchungen verschiedener Formen der Heuvorlage bei Pferden unter ethologischem Aspekt Type Book Chapter
Year 2004 Publication KTBL Schriften Abbreviated Journal
Volume 437 Issue Pages
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5764
Permanent link to this record
 
 
Author Quaranta, A.; Siniscalchi, M.; Frate, A.; Vallortigara, G.
Title Paw preference in dogs: relations between lateralised behaviour and immunity Type Journal Article
Year 2004 Publication Behavioural Brain Research Abbreviated Journal
Volume 153 Issue 2 Pages 521-525
Keywords Paw preference; Lateralisation; Immunity; Dog
Abstract Paw use in a task consisting of the removal of a piece of adhesive paper from the snout was investigated in 80 mongrel and pure-bred domestic dogs (Canis familiaris). Population lateralisation was observed, but in opposite directions in the two sexes (animals were not desexed): males preferentially used their left paw, females their right paw. The relationship between immune function and paw preference was then investigated. Some immune parameters (total number of white blood cells including lymphocytes, granulocytes and monocytes; leukocyte formula; total proteins; &#947;-globulins) were investigated in a sample of left-pawed (n=6), right-pawed (n=6) and ambidextrous (n=6) dogs. The results showed that the percentage of lymphocytes was higher in left-pawed than in right-pawed and ambidextrous dogs, whereas granulocytes percentage was lower in left-pawed than in right-pawed and ambidextrous dogs. Moreover, total number of lymphocytes cells was higher in left-pawed than in right-pawed and ambidextrous dogs, whereas the number of &#947;-globulins was lower in left-pawed than in right-pawed and ambidextrous dogs. These findings represent the first evidence that brain asymmetry modulates immune responses in dogs.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0166-4328 ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5783
Permanent link to this record
 
 
Author Stull, C.L.; Spier, S.J.; Aldridge, B.M.; Blanchard, M.; Stott, J.L.
Title Immunological response to long-term transport stress in mature horses and effects of adaptogenic dietary supplementation as an immunomodulator Type Journal Article
Year 2004 Publication Equine Veterinary Journal Abbreviated Journal
Volume 36 Issue 7 Pages 583-589
Keywords horse; transportation; Cd+; lymphocytes; stress; cortisol; adaptogens
Abstract Reasons for performing study: Little information exists on the immunological effects of transport or the use of supplements to minimise transport stress. Objectives: To establish baseline ranges and evaluate immunophenotypic and functional changes associated with transport and a nutritional ‘adaptogen’ supplement. Methods: Horses received either supplement (n = 10) or placebos (n = 9) during the 30 day study. After 28 days in stalls, 12 horses (6 supplement; 6 placebo) were transported for 24 h, then unloaded and recovered. Venous blood samples were collected on Days 1, 14 and 28 to establish baselines, and on Days 28, 29 and 30 to examine changes during transport and recovery. Results: Transport prompted elevations (P<0.05) in cortisol concentration, neutrophil count and white blood cell counts, while lymphocyte subpopulation counts (CD3+, CD4+, CD8+, CD21+) decreased (P<0.05). Normal phenotypic lymphocyte profiles returned within 24 h of recovery. Supplement effects on immunophenotype (CD21+ and CD8+) were observed in stabled horses (P<0.05), but not in transported horses. Conclusions: These results provide insights into the immunological mechanisms associated with long-term transport. Potential relevance: The existence of a small window of immunological uncertainty follows long-term transportation, enhancing the potential risk of infectious disease in susceptible individuals.
Address
Corporate Author Thesis
Publisher Blackwell Publishing Ltd Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2042-3306 ISBN Medium (down)
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5845
Permanent link to this record