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Author Berger J, openurl 
  Title Reproductive fates of dispersers in a harem-dwelling ungulate: the wild horse Type Journal Article
  Year 1987 Publication Mammalian Dispersal Patterns: The Effects of Social Structure on Population Genetics Abbreviated Journal (up) Mammalian dispersal Patterns  
  Volume Issue Pages 41-54  
  Keywords  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor Chepko-Sade, B.D. ; Halpin, Z.T.  
  Language Summary Language Original Title Mammalian Dispersal Patterns: The Effects of Social Structure on Population Genetics  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 940  
Permanent link to this record
 

 
Author Terrace, H.S. doi  openurl
  Title Chunking by a pigeon in a serial learning task Type Journal Article
  Year 1987 Publication Nature Abbreviated Journal (up) Nature  
  Volume 325 Issue 7000 Pages 149-151  
  Keywords Animals; Cognition/*physiology; Columbidae/*physiology; Feedback; Learning/*physiology; Male  
  Abstract A basic principle of human memory is that lists that can be organized into memorable 'chunks' are easier to remember. Memory span is limited to a roughly constant number of chunks and is to a large extent independent of the amount of informaton contained in each chunk. Depending on the ingenuity of the code used to integrate discrete items into chunks, one can substantially increase the number of items that can be recalled correctly. Newly developed paradigms for studying memory in non-verbal organisms allow comparison of the abilities of human and non-human subjects to memorize lists. Here I present two types of evidence that pigeons 'chunk' 5-element lists whose components (colours and achromatic geometric forms) are clustered into distinct groups. Those lists were learned twice as rapidly as a homogeneous list of colours or heterogeneous lists in which the elements are not clustered. The pigeons were also tested for knowledge of the order of two elements drawn from the 5-element lists. They responded in the correct order only to those subsets that contained a chunk boundary. Thus chunking can be studied profitably in animal subjects; the cognitive processes that allow an organism to form chunks do no presuppose linguistic competence.  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0028-0836 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:3808071 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2792  
Permanent link to this record
 

 
Author Penzhorn Bl, openurl 
  Title Descriptions of incisors of known – age Cape Mountain Zebras from the Mountain Zebra National park Type Journal Article
  Year 1987 Publication Abbreviated Journal (up) Onderstepoort J vet Res  
  Volume 54 Issue Pages 135-141  
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  Series Editor Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1459  
Permanent link to this record
 

 
Author Enileeva, N.K. openurl 
  Title [Ecological characteristics of horse stomach botflies in Uzbekistan] Type Journal Article
  Year 1987 Publication Parazitologiia Abbreviated Journal (up) Parazitologiia  
  Volume 21 Issue 4 Pages 577-579  
  Keywords Animals; Diptera/*physiology; Ecology; Female; Flight, Animal; Horses/*parasitology; Larva/physiology; Male; Population Dynamics; Uzbekistan  
  Abstract The paper describes the flight periods and dynamics of abundance of horse botflies, life span of females and males, effect of environmental factors on the activity of flies and their behaviour, potential fecundity of different species of botflies, duration of embryonal development, preservation of viability of larvae in egg membranes, localization of different stages of botflies in the host, and methods of their control.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Russian Summary Language Original Title Ekologicheskie osobennosti zheludochnykh ovodov loshadei v Uzbekistane  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0031-1847 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:2958767 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2680  
Permanent link to this record
 

 
Author Wasserman, S. doi  openurl
  Title Conformity of two sociometric relations Type Journal Article
  Year 1987 Publication Psychometrika Abbreviated Journal (up) Psychometrika  
  Volume 52 Issue 1 Pages 3-18  
  Keywords  
  Abstract Abstract  The problem of comparing two sociometric relations or measurements (A andB) recorded in distinct sociomatrices was originally discussed by Katz and Powell in the early 1950's and Hubert and Baker in the late 1970's. The problem is considered again using a probabilistic model designed specifically for discrete-valued network measurements. The model allows for the presence of various structural tendencies, such as reciprocity and differential popularity. A parameter that isolates the tendency for actors to choose other actors on both relations simultaneously is introduced, and estimated conditional on the presence of other parameters that reflect additional important network properties. The parameter is presented as a symmetric index but is also generalized to the predictive (A onB orB onA) situation. This approach to the problem is illustrated with the same data used by the earlier solutions, and the unique nature of the two relations in the data set (A = received choices,B = perceived choices), as it affects the modeling, is discussed. Significance tests for the parameter and related parameters are described, as well as an extension to more than two relations.  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5027  
Permanent link to this record
 

 
Author Olivier W, openurl 
  Title Is it possible to bring back the quagga? Type Journal Article
  Year 1987 Publication Abbreviated Journal (up) Roan News  
  Volume 4 Issue Pages 1-2  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1435  
Permanent link to this record
 

 
Author Penzhorn Bl, G.R. openurl 
  Title Incisor wear in free – ranging Cape mountain zebras Type Journal Article
  Year 1987 Publication Abbreviated Journal (up) S Afr J Wildl Res  
  Volume 17 Issue Pages 99-102  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1461  
Permanent link to this record
 

 
Author Illius,A. W.; Gordon, I. J. doi  openurl
  Title The Allometry of Food Intake in Grazing Ruminants Type Journal Article
  Year 1987 Publication The Journal of Animal Ecology Abbreviated Journal (up) T. J. Anim. Ecol.  
  Volume 56 Issue 3 Pages 989-999  
  Keywords  
  Abstract A simulation model of grazing mechanics in ruminants shows that, due to the allometric relations of bite size and metabolic requirements to body size, small animals are able to subsist on shorter swards than large animals. (2) The density of nutrients in the grazed horizon of the modelled swards markedly affected the ability of animals of a given body size to satisfy their energy requirements. (3) By extension, the allometric relationships would be expected to apply in selective grazing and browsing species in their choice of food items of different size and nutrient content. (4) The results support the argument that sexual segregation and habitat choice of dimorphic species is an effect of scramble competition for limited resources, the males thus being excluded from mutually preferred swards. (5) The model provides an explanation for two interspecific phenomena amongst grazers: grazing succession and grazing facilitation.  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4265  
Permanent link to this record
 

 
Author Pusey, A.E. url  doi
openurl 
  Title Sex-biased dispersal and inbreeding avoidance in birds and mammals Type Journal Article
  Year 1987 Publication Trends in Ecology & Evolution Abbreviated Journal (up) Trends. Ecol. Evol  
  Volume 2 Issue 10 Pages 295-299  
  Keywords  
  Abstract Sex differences in dispersal distance are widespread in birds and mammals, but the predominantly dispersing sex differs consistently between the classes. There has been persistent debate over the relative importance of two factors -- intrasexual competition and inbreeding avoidance -- in producing sex-biased dispersal, and over the sources of the difference in dispersal patterns between the two classes. Recent studies cast new light on these questions.  
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  Series Volume Series Issue Edition  
  ISSN 0169-5347 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5326  
Permanent link to this record
 

 
Author Hughes, K.L.; Sulaiman, I. openurl 
  Title The ecology of Rhodococcus equi and physicochemical influences on growth Type Journal Article
  Year 1987 Publication Veterinary Microbiology Abbreviated Journal (up) Vet Microbiol  
  Volume 14 Issue 3 Pages 241-250  
  Keywords Animals; Feces/microbiology; Horses; Hydrogen-Ion Concentration; Rhodococcus/*growth & development; *Soil Microbiology; Temperature  
  Abstract Growth of Rhodococcus equi was studied in vitro. Optimal growth occurred under aerobic conditions between pH 7.0 and 8.5, at 30 degrees C. R. equi survived better in a neutral soil (pH 7.3) than it did in two acid soils (pH less than 5.5). It grew substantially better in soils enriched with faeces than in soils alone. Simple organic acids in horse dung, especially acetate and propionate, appear to be important in supporting growth of R. equi in the environment. The ecology of R. equi can be best explained by an environmental cycle allowing its proliferation in dung, influenced by management, grazing behaviour and prevailing climatic conditions. Preventive measures should be aimed at reducing or avoiding focal areas of faecal contamination in the environment.  
  Address School of Veterinary Science, University of Melbourne, Parkville, Vic., Australia  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0378-1135 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:3672866 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2678  
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