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Griebenow, K.; Klibanov, A.M. |
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Title |
Lyophilization-induced reversible changes in the secondary structure of proteins |
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1995 |
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Proc Natl Acad Sci USA |
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92 |
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24 |
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10969-10976 |
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Changes in the secondary structure of some dozen different proteins upon lyophilization of their aqueous solutions have been investigated by means of Fourier-transform infrared spectroscopy in the amide III band region. Dehydration markedly (but reversibly) alters the secondary structure of all the proteins studied, as revealed by both the quantitative analysis of the second derivative spectra and the Gaussian curve fitting of the original infrared spectra. Lyophilization substantially increases the beta-sheet content and lowers the alpha-helix content of all proteins. In all but one case, proteins become more ordered upon lyophilization. |
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Equine Behaviour @ team @ |
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6519 |
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Author |
Boissy, A. |
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Title |
Fear and Fearfulness in Animals |
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Journal Article |
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Year |
1995 |
Publication |
The Quarterly Review of Biology |
Abbreviated Journal |
The Quarterly Review of Biology |
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70 |
Issue |
2 |
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165-191 |
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Persistence of individual differences in animal behavior in reactions to various environmental challenges could reflect basic divergences in temperament, which might be used to predict details of adaptive response. Although studies have been carried out on fear and anxiety in various species, including laboratory, domestic and wild animals, no consistent definition of fearfulness as a basic trait of temperament has emerged. After a classification of the events that may produce a state of fear, this article describes the great variability in behavior and in physiological patterns generally associated with emotional reactivity. The difficulties of proposing fearfulness-the general capacity to react to a variety of potentially threatening situations-as a valid basic internal variable are then discussed. Although there are many studies showing covariation among the psychobiological responses to different environmental challenges, other studies find no such correlations and raise doubts about the interpretation of fearfulness as a basic personality trait. After a critical assessment of methodologies used in fear and anxiety studies, it is suggested that discrepancies among results are mainly due to the modulation of emotional responses in animals, which depend on numerous genetic and epigenetic factors. It is difficult to compare results obtained by different methods from animals reared under various conditions and with different genetic origins. The concept of fearfulness as an inner trait is best supported by two kinds of investigations. First, an experimental approach combining ethology and experimental psychology produces undeniable indicators of emotional reactivity. Second, genetic lines selected for psychobiological traits prove useful in establishing between behavioral and neuroendocrine aspects of emotional reactivity. It is suggested that fearfulness could be considered a basic feature of the temperament of each individual, one that predisposes it to respond similarly to a variety of potentially alarming challenges, but is nevertheless continually modulated during development by the interaction of genetic traits of reactivity with environmental factors, particularly in the juvenile period. Such interaction may explain much of the interindividual variability observed in adaptive responses. |
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The University of Chicago Press |
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0033-5770 |
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doi: 10.1086/418981 |
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Equine Behaviour @ team @ |
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6664 |
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Clutton-Brock, J. |
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Title |
Origins of the dog: domestication and early history |
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Book Chapter |
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1995 |
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The Domestic Dog: Its Evolution, Behaviour and Interactions with People |
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Cambridge University Press |
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Cambridge |
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Serpell, J.A. |
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Equine Behaviour @ team @ Clutton-Brock1995 |
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6247 |
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Author |
Maddock, L. |
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Title |
The “migration” and grazing succession |
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Book Chapter |
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Year |
1995 |
Publication |
Serengeti: Dynamics of an Ecosystem |
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Editorial Reviews
Book Description
Originally published in 1979, Serengeti: Dynamics of an Ecosystem was immediately recognized as the first synthesis of the patterns and processes of a major ecosystem. A prototype for initial studies, Serengeti contains baseline data for further and comparative studies of ecosystems. The new Serengeti II builds on the information presented originally in Serengeti; both books together offer essential information and insights for ecology and conservation biology. |
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University Of Chicago Press |
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Chicago |
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Sinclair, A.R.E. ; Norton-Griffiths, A.R.E. |
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Serengeti: Dynamics of an Ecosystem |
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978-0226760292 |
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Equine Behaviour @ team @ |
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2343 |
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Houpt, K.A. |
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Title |
Learning in horses. |
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Book Chapter |
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1995 |
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The thinking horse. |
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12-17 |
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Equine Research Centre |
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Guelph, Canada |
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Equine Behaviour @ team @ |
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3585 |
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Author |
Russon, A.E.; Galdikas, B.M.F. |
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Title |
Constraints on great apes' imitation: Model and action selectivity in rehabilitant orangutan (Pongo pygmaeus) imitation |
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Journal Article |
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1995 |
Publication |
Journal of Comparative Psychology |
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J. Comp. Psychol. |
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109 |
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1 |
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5-17 |
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*Imitation (Learning); Primates (Nonhuman) |
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We discuss selectivity in great ape imitation, on the basis of an observational study of spontaneous imitation in free-ranging rehabilitant orangutans (Pongo pygmaeus). Research on great ape imitation has neglected selectivity, although comparative evidence suggests it may be important. We observed orangutans in central Indonesian Borneo and assessed patterns in the models and actions they spontaneously imitated. The patterns we found resembled those reported in humans. Orangutans preferred models with whom they had positive affective relationships (e.g., important caregiver or older sibling) and actions that reflected their current competence, were receptively familiar, and were relevant to tasks that faced them. Both developmental and individual variability were found. We discuss the probable functions of imitation for great apes and the role of selectivity in directing it. We also make suggestions for more effective elicitation of imitation. (PsycINFO Database Record (c) 2012 APA, all rights reserved) |
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American Psychological Association |
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Us |
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1939-2087(Electronic);0735-7036(Print) |
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Call Number |
Equine Behaviour @ team @ 1995-20268-001 |
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5690 |
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