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Author SchäFer M,
Title Beobachtungen zum interspezifischen Aggressionsverhalten eines Halbeselhybrid Type Journal Article
Year 1981 Publication Abbreviated Journal Säugetierk Mitt
Volume 29 Issue (up) Pages 49-58
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1560
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Author Miller, R.
Title Male aggression, dominance and breeding behaviour in Red Desert feral horses Type Journal Article
Year 1981 Publication Zeitschrift fur Tierpsychologie Abbreviated Journal Z. Tierpsychol.
Volume 57 Issue (up) Pages 340-201
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2374
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Author Clutton-Brock, Juliet.
Title Domesticated animals from early times Type Book Whole
Year 1981 Publication Abbreviated Journal
Volume Issue (up) Pages
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Publisher Univ of Texas Press Place of Publication Austin Editor
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ISSN ISBN 9780292715325 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4088
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Author Wittenberger, James F.
Title Animal Social Behavior Type Book Whole
Year 1981 Publication Abbreviated Journal
Volume Issue (up) Pages
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Publisher Duxbury Press Place of Publication Boston Editor
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ISSN ISBN 978-0878722952 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4262
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Author Henning, J.M.; Zentall, T.R.
Title Imitation, social facilitation, and the effects of ACTH 4-10 on rats' bar-pressing behavior Type Journal Article
Year 1981 Publication The American journal of psychology Abbreviated Journal Am J Psychol
Volume 94 Issue (up) 1 Pages 125-134
Keywords Adrenocorticotropic Hormone/*pharmacology; Animals; Conditioning, Operant/*drug effects; Dose-Response Relationship, Drug; Extinction, Psychological/drug effects; Imitative Behavior/*drug effects; Male; Peptide Fragments/*pharmacology; Rats; *Social Facilitation
Abstract The effects of ACTH 4-10 on rats' imitation learning was examined during the acquisition and extinction of a bar-press response for water reinforcement. Rats were exposed to either a bar-pressing conspecific (OB), an experimentally naive conspecific (ON), or an empty box (OE) during bar-press acquisition. In a factorial design, each rat was then exposed to one of the same three conditions during extinction. An 80 mcg dose of ACTH 4-10 was administered to half of the rats in each group prior to observation. Performance differences during acquisition were generally small, but significant performance differences during extinction were found. Social facilitation was indicated by the finding that rats extinguished in the presence of a conspecific exhibited significantly greater resistance to extinction than rats extinguished in the presence of an empty box. An imitation effect was also found. Rats that observed a bar-pressing conspecific during both acquisition and extinction (group OB-OB) showed significantly greater resistance top extinction than did groups OB-ON, CB-OE, or OE-OE. There were no significant effects of the hormone, however, relative to saline controls.
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ISSN 0002-9556 ISBN Medium
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Notes PMID:6263117 Approved no
Call Number refbase @ user @ Serial 267
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Author Saigo, S.
Title Kinetic and equilibrium studies of alkaline isomerization of vertebrate cytochromes c Type Journal Article
Year 1981 Publication Biochimica et Biophysica Acta Abbreviated Journal Biochim Biophys Acta
Volume 669 Issue (up) 1 Pages 13-20
Keywords Amino Acid Sequence; Animals; Cytochrome c Group/*metabolism; Dogs; Hydrogen-Ion Concentration; Isomerism; Kinetics; Vertebrates/metabolism
Abstract Equilibria and kinetics of alkaline isomerization of seven ferricytochromes c from vertebrates were studied by pH-titration and pH-jump methods in the pH region of 7-12. In the equilibrium behavior, no significant difference was detected among the cytochromes c, whereas marked differences in the kinetic behavior were observed. According to the kinetic behavior of the isomerization, the cytochromes c examined fall into three classes: Group I (horse, sheep, dog and pigeon cytochromes c), Group II (tuna and bonito cytochromes c) and Group III (rhesus monkey cytochrome c). The kinetic results are interpreted in terms of the sequential scheme: Neutral form in equilibrium with fast Transient form in equilibrium with slow Alkaline form where the neutral and alkaline forms are the species stable at neutral and alkaline pH, respectively, and the transient form is a kinetic intermediate. From comparison of the primary sequences of the seven cytochromes c and the classification of these cytochromes c, it is concluded that the amino acid substitution Phe/Tyr at the 46-th position has a major influence on the kinetic behavior. In Group II and III cytochromes c, the ionization of Tyr-46 is suggested to bring about loosening of the heme crevice and thus facilitate the ligand replacement involved in the isomerization.
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ISSN 0006-3002 ISBN Medium
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Notes PMID:6271238 Approved no
Call Number refbase @ user @ Serial 3871
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Author Parker, G.A.; Rubenstein, D.I.
Title Role assessment, reserve strategy, and acquisition of information in asymmetric animal conflicts Type Journal Article
Year 1981 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 29 Issue (up) 1 Pages 221-240
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Abstract It was formerly argued that alternative evolutionarily stable strategies (ESSs) are possible for animal contests characterized by some asymmetry that can be perceived with perfect accuracy. Where roles A and B refer to the asymmetry between opponents, ESSs are: [`]fight when A, retreat when B', and vice versa. Either can be an ESS, but only if the [`]reserve strategy' (=what an animal does when it fights) is sufficiently damaging. We examine the [`]war of attrition' (winner = opponent that persists longer). In a population at either ESS, reserve strategy is never normally shown; it is therefore subject to drift unless the selective action of rare individuals which break the convention is considered. These could arise either by mutation or by mistakes in role assessment. When mutations and mistakes simply specify that occasionally an animal fights when it [`]should' retreat, selection adjusts reserve strategy to a level where only one ESS (the [`]commonsense' ESS) is possible, if the asymmetry is relevant to payoff. Thus for asymmetries in fighting ability or resource value, the individual with the lower score will retreat. However, we are particularly concerned with cases where both payoff-relevant aspects (fighting ability and resource value) are asymmetric. If opponents sustain contest costs at rates KA and KB, and their resource values are VA and VB, an [`]optimal assessor' strategy defined by the interaction between the two asymmetries, is a unique ESS. It obeys the rule [`]fight on estimating role A, where VA/KA>VB/KB; retreat in B'. If mistakes can occur in both roles, but are very rate, the ESS is not fundamentally altered though there will be infinitesimal tendencies for persisting in role B. Selection to improve assessment abilities intensifies as abilities improve, but is weak if roles A and B are rather similar. Over a range of similarity between roles, an [`]owner wins' convention may be adopted if ownership correlates positively with role A and an individual cannot tell when it would otherwise pay him to break the convention. We also examine a contest in which information about roles can be acquired only during a contest itself, and at a cost. Much depends on the rate at which information is acquired relative to the rate at which costs are expended, and on whether contests normally escalate in intensity, remain at the same level, or de-escalate. Selection favours short contests when costs are high relative to resource value, where the outcome of a round contains much information about fighting ability, and where the actual disparity in fighting ability is large.
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ISSN 0003-3472 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5325
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Author Hendricks, J.C.; Morrison, A.R.
Title Normal and abnormal sleep in mammals Type Journal Article
Year 1981 Publication Journal of the American Veterinary Medical Association Abbreviated Journal J Am Vet Med Assoc
Volume 178 Issue (up) 2 Pages 121-126
Keywords Animals; Cat Diseases/physiopathology; Cats; Cattle; Dog Diseases/physiopathology; Dogs; Dreams; Horses/physiology; Humans; Narcolepsy/physiopathology/veterinary; Sleep/*physiology; Sleep Apnea Syndromes/physiopathology/veterinary; Sleep Disorders/physiopathology/*veterinary; Sleep, REM/physiology
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ISSN 0003-1488 ISBN Medium
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Notes PMID:7204232 Approved no
Call Number refbase @ user @ Serial 101
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Author R. A. J. Taylor
Title The Behavioural Basis of Redistribution I. The Delta -Model Concept Type Journal Article
Year 1981 Publication The Journal of Animal Ecology Abbreviated Journal T. J. Anim. Ecol.
Volume 50 Issue (up) 2 Pages 573-586
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Abstract (1) A conceptual model is developed in which spatial behaviour is density-dependent. The behaviour is classified as congregatory or migratory according to whether it results in movement towards or away from population concentrations. (2) Spatial behaviour is shown to result from both individual and population interactions. (3) The stability properties of the model are explored and it is shown how, under particular conditions, populations obeying the model have a population density regulating mechanism. (4) The similarity between the model and the potential energy curve of physics is noted, but it is emphasized that this is a behavioural not a physical model.
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Notes Approved no
Call Number refbase @ user @ Serial 720
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Author Roberts, J.; Hunter, M.L.; Kacelnik, A.
Title The ground effect and acoustic communication Type Journal Article
Year 1981 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 29 Issue (up) 2 Pages 633-634
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Notes Approved no
Call Number Serial 2123
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