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Author Kitchen A; Denton D; Brent L openurl 
  Title Self-recognition and abstraction abilities in the common chimpanzee studied with distorting mirrors Type Journal Article
  Year 1996 Publication Proc. Natl. Acad. Sci. USA Abbreviated Journal  
  Volume 93 Issue Pages (down) 7405  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3011  
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Author Ballew, R.M.; Sabelko, J.; Gruebele, M. openurl 
  Title Direct observation of fast protein folding: the initial collapse of apomyoglobin Type Journal Article
  Year 1996 Publication Proceedings of the National Academy of Sciences of the United States of America Abbreviated Journal Proc. Natl. Acad. Sci. U.S.A.  
  Volume 93 Issue 12 Pages (down) 5759-5764  
  Keywords Animals; Apoproteins/*chemistry; Circular Dichroism; Horses; Kinetics; Muscle, Skeletal/chemistry; Myoglobin/*chemistry; *Protein Folding; Spectrometry, Fluorescence; Spectrophotometry, Infrared; Temperature  
  Abstract The rapid refolding dynamics of apomyoglobin are followed by a new temperature-jump fluorescence technique on a 15-ns to 0.5-ms time scale in vitro. The apparatus measures the protein-folding history in a single sweep in standard aqueous buffers. The earliest steps during folding to a compact state are observed and are complete in under 20 micros. Experiments on mutants and consideration of steady-state CD and fluorescence spectra indicate that the observed microsecond phase monitors assembly of an A x (H x G) helix subunit. Measurements at different viscosities indicate diffusive behavior even at low viscosities, in agreement with motions of a solvent-exposed protein during the initial collapse.  
  Address School of Chemical Sciences and Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana, 61801, USA  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0027-8424 ISBN Medium  
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  Notes PMID:8650166 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3798  
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Author Provenza, F.D. url  openurl
  Title Acquired aversions as the basis for varied diets of ruminants foraging on rangelands Type Journal Article
  Year 1996 Publication Journal of Animal Science Abbreviated Journal J. Anim Sci.  
  Volume 74 Issue 8 Pages (down) 2010-2020  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2946  
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Author Meriggi,A.; Lovari, S. openurl 
  Title A Review of Wolf Predation in Southern Europe: Does the Wolf Prefer Wild Prey to Livestock? Type Journal Article
  Year 1996 Publication Journal of Applled Ecology Abbreviated Journal J. Appl. Ecol  
  Volume 33 Issue Pages (down) 1561-1571  
  Keywords Canis lupus, conservation, food habits, prey abundance, prey availability.  
  Abstract 1. The recent recovery of the wolf in southern Europe has not yet removed the risk

of local extinction. Wolf populations are fragmented and often comprise fewer than

500 individuals. In North America, northern and eastern Europe, wolves feed maiiily

on wild herbivores. In southern Europe, this canid has apparently adapted to feed

also on fruit, rubbish, livestock, small and medium-size mammals.

2. The main conservation problem lies with predation o n domestic ~ingulates,w liich

leads to extensive killing of wolves. The reintroduction of wild large herbivores has

been advocated as a means of reducing attacks on livestock, but predatiori on the

latter may remain high if domestic ungulates are locally abundant.

3. Our synthesis of 15 studies, published in the last 15 years, on food habits of the

wolf in southern Europe, has shown that ungulates have been the main diet component

overall. A significant inverse correlation was found between the occurrence (%) of

wild and domestic ungulates in the diet. The presence of relatively few wild ungulate

species was necessary to reduce predation on livestock.

4. Selection of wild and domestic ungulate prey was influenced mainly by their local

abundance, but also by their accessibility. Feeding dependence on rubbish was local

and rare. In Italy, the consumption of riibbish/fruit and that of ungulates was significantly

negatively correlated. Diet breadth increased as the presence of large prey

in tlie diet decreased.

5. The simultaneous reintroduction of severa1 wild ungulate species is likely to reduce

predation on livestock and may prove to be one of the most effective conservation

measures.
 
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  Call Number Equine Behaviour @ team @ Serial 6387  
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Author Gary C. Jahn; Craig Packer,Robert Heinsohn openurl 
  Title Lioness leadership Type Journal Article
  Year 1996 Publication Science (New York, N.Y.) Abbreviated Journal Science  
  Volume 271 Issue 5253 Pages (down) 1216-1219  
  Keywords Animals; *Behavior; Animal; Cooperative Behavior; Female; Lions/*psychology; Territoriality  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0036-8075 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Jahn1996 Serial 2073  
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Author Packer, C; Heinsohn, R. doi  openurl
  Title Response:Lioness leadership Type Journal Article
  Year 1996 Publication Science (New York, N.Y.) Abbreviated Journal Science  
  Volume 271 Issue 5253 Pages (down) 1215-1216  
  Keywords Animals; *Behavior; Animal; Cooperative Behavior; Female; Lions/*psychology; Territoriality  
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  ISSN 0036-8075 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Jahn1996 Serial 2072  
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Author Frank S. A. openurl 
  Title Policing and group cohesion when resources vary. Type Journal Article
  Year 1996 Publication Animal Behaviour Abbreviated Journal Anim. Behav.  
  Volume 52 Issue Pages (down) 1163-1169  
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  Abstract The transition from competing individuals to cooperative groups has occurred several times inevolutionary history. The puzzle is why selfish individuals did not subvert cohesive group behaviour bytaking resources without contributing to the group’s overall success. Kin selection and reciprocal altruism are the two standard explanations for group cohesion. But many groups have evolved into

cooperative units when relatedness was low and opportunities were limited for the strategic alliances required for reciprocity. A new theory was recently proposed in which individuals invest some of their resources into repressing competition between group members. Such policing increases the fair distribution of resources in the group and enhances group cohesion. The surprising aspect of this theory

is that low relatedness is more conducive to the spread of policing traits than is high relatedness. Here a new explanation is developed of the biological processes that favour policing. The model is then extended in two ways. First, more realism is added to the theory by accounting for the full range of costs and benefits associated with competitive and cooperative traits within groups. Second, another

surprising result is introduced about cooperative evolution. Small variations in individual vigour or resources can lead to large variations in individual contributions to policing the group. Stronger individuals often invest all of their excess resources into policing, but weaker individuals do not contribute to group cohesion.
 
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  Call Number Equine Behaviour @ team @ Serial 5429  
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Author Sekuler, A.B.; Lee, J.A.; Shettleworth, S.J. openurl 
  Title Pigeons do not complete partly occluded figures Type Journal Article
  Year 1996 Publication Perception Abbreviated Journal Perception  
  Volume 25 Issue 9 Pages (down) 1109-1120  
  Keywords Animals; *Columbidae; *Visual Perception  
  Abstract One of the most common obstacles to object perception is the fact that objects often occlude parts of themselves and parts of other objects. Perceptual completion has been studied extensively in humans, and researchers have shown that humans do complete partly occluded objects. In an effort to understand more about the mechanisms underlying completion, recent research has extended the study of perceptual completion to other mammalian species. Monkeys and mice also seem to complete two-dimensional representations of partly occluded objects. The present study addresses the question of whether this capacity generalizes to a nonmammalian species, the pigeon (Columba livia). The results point to a limit of the generalizability of perceptual completion: pigeons do not complete partly occluded figures.  
  Address Department of Psychology, University of Toronto, ON, Canada  
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  Series Volume Series Issue Edition  
  ISSN 0301-0066 ISBN Medium  
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  Notes PMID:8983050 Approved no  
  Call Number refbase @ user @ Serial 377  
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Author Monard, A.M.; Duncan,P.; Boy, V. url  openurl
  Title The proximate mechanisms of natal dispersal in female horses. Type Journal Article
  Year 1996 Publication Behaviour Abbreviated Journal Behaviour  
  Volume 133 Issue Pages (down) 1095-1124  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2387  
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Author Brunner, D.; Kacelnik, A.; Gibbon, J. url  doi
openurl 
  Title Memory for inter-reinforcement interval variability and patch departure decisions in the starling,Sturnus vulgaris Type Journal Article
  Year 1996 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 51 Issue 5 Pages (down) 1025-1045  
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  Abstract An experiment with starlings was conducted to investigate the effect of variability in inter-reinforcement intervals on foraging decisions. The experimental design simulated an environment in which food was distributed in patches. Patches contained zero to four food items which could be collected by pecking at a key. All patches ended with sudden depletion. The time elapsed since the last reinforcement was the only way to detect the depletion of the patch. Once a patch was depleted, a new patch could be reached by completion of a travel requirement of 20 flights between two perches. Key pecks within a patch and the time of the last response in a patch (giving-in time) were recorded. The level of variability in the inter-reinforcement intervals was varied between different conditions. An increase in inter-reinforcement interval variability resulted in a flattening of response rate functions and giving-in time distributions, and in more asymmetry of the response functions, but not of the giving-in time distributions. Two theoretical models of decision making are presented, which differ in the assumptions about memory constraints. In one case, all inter-reinforcement intervals are remembered but in the other, only the intervals with extreme values are remembered. Both models accommodate response rates as a function of trial time, but only the second is compatible with the observed departure decision. Our results are compatible with net rate maximization.  
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  Notes Approved no  
  Call Number Serial 2109  
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