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Author Enileeva, N.K. openurl 
  Title [Ecological characteristics of horse stomach botflies in Uzbekistan] Type (up) Journal Article
  Year 1987 Publication Parazitologiia Abbreviated Journal 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  
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Author Sukhomlinov, B.F.; Korobov, V.N.; Gonchar, M.V.; Datsiuk, L.A.; Korzhev, V.A. openurl 
  Title [Comparative analysis of the peroxidase activity of myoglobins in mammals] Type (up) Journal Article
  Year 1987 Publication Zhurnal Evoliutsionnoi Biokhimii i Fiziologii Abbreviated Journal Zh Evol Biokhim Fiziol  
  Volume 23 Issue 1 Pages 37-41  
  Keywords Amino Acid Sequence; Animals; Ecology; *Evolution; Kinetics; Mammals/*metabolism; Myoglobin/*metabolism; Peroxidases/*metabolism  
  Abstract Studies have been made on the peroxidase activity of metmyoglobins in animals from various ecological groups--the horse Equus caballus, cattle Bos taurus, beaver Castor fiber, otter Lutra lutra, mink Mustela vison and dog Canis familiaris. It was found that the level of this activity in diving animals depends on the duration of their diving, whereas in terrestrial species--on the strength of muscular contraction.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Russian Summary Language Original Title Sravnitel'nyi analiz peroksidaznoi aktivnosti mioglobinov u mlekopitaiushchikh  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0044-4529 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:3564776 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2681  
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Author Rumbaugh, D.M.; Savage-Rumbaugh, S.; Hegel, M.T. openurl 
  Title Summation in the chimpanzee (Pan troglodytes) Type (up) Journal Article
  Year 1987 Publication Journal of Experimental Psychology. Animal Behavior Processes Abbreviated Journal J Exp Psychol Anim Behav Process  
  Volume 13 Issue 2 Pages 107-115  
  Keywords Animals; Choice Behavior; *Cognition; Male; *Mathematics; *Pan troglodytes; Visual Perception  
  Abstract In this research, we asked whether 2 chimpanzee (Pan troglodytes) subjects could reliably sum across pairs of quantities to select the greater total. Subjects were allowed to choose between two trays of chocolates. Each tray contained two food wells. To select the tray containing the greater number of chocolates, it was necessary to sum the contents of the food wells on each tray. In experiments where food wells contained from zero to four chocolates, the chimpanzees chose the greater value of the summed wells on more than 90% of the trials. In the final experiment, the maximum number of chocolates assigned to a food well was increased to five. Choice of the tray containing the greater sum still remained above 90%. In all experiments, subjects reliably chose the greater sum, even though on many trials a food well on the “incorrect” tray held more chocolates than either single well on the “correct” tray. It was concluded that without any known ability to count, these chimpanzees used some process of summation to combine spatially separated quantities. Speculation regarding the basis for summation includes consideration of perceptual fusion of pairs of quantities and subitization.  
  Address  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0097-7403 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:3572305 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2785  
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Author Terrace, H.S. doi  openurl
  Title Chunking by a pigeon in a serial learning task Type (up) Journal Article
  Year 1987 Publication Nature Abbreviated Journal 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  
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Author Leslie AM openurl 
  Title Pretense and representation in infancy: the origins of theory of mind Type (up) Journal Article
  Year 1987 Publication Psychol. Rev. Abbreviated Journal  
  Volume 94 Issue Pages 412  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3014  
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Author Povinelli DJ openurl 
  Title Monkeys, apes, mirrors and minds: the evolution of self-awareness in primates Type (up) Journal Article
  Year 1987 Publication J. Hum. Evol. Abbreviated Journal  
  Volume 2 Issue Pages 493  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3025  
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Author Tomasello, M.; Davis-Dasilva, M.; Camak, L.; Bard, K. url  doi
openurl 
  Title Observational learning of tool-use by young chimpanzees Type (up) Journal Article
  Year 1987 Publication Abbreviated Journal Human Evolution  
  Volume 2 Issue 2 Pages 175-183  
  Keywords Chimpanzees; Observational Learning; Tool-Use  
  Abstract In the current study two groups of young chimpanzees (4–6 and 8–9 years old) were given a T-bar and a food item that could only be reached by using the T-bar. Experimental subjects were given the opportunity to observe an adult using the stick as a tool to obtain the food; control subjects were exposed to the adult but were given no demonstration. Subjects in the older group did not learn to use the tool. Subjects in the younger group who were exposed to the demonstrator learned to use the stick as a tool much more readily than those who were not. None of the subjects demonstrated an ability to imitatively copy the demonstrator's precise behavioral strategies. More than simple stimulus enhancement was involved, however, since both groups manipulated the T-bar, but only experimental subjects used it in its function as a tool. Our findings complement naturalistic observations in suggesting that chimpanzee tool-use is in some sense «culturally transmitted» — though perhaps not in the same sense as social-conventional behaviors for which precise copying of conspecifics is crucial.  
  Address  
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  Publisher Kluwer Academic Publishers Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0393-9375 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5915  
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Author Illius,A. W.; Gordon, I. J. doi  openurl
  Title The Allometry of Food Intake in Grazing Ruminants Type (up) Journal Article
  Year 1987 Publication The Journal of Animal Ecology Abbreviated Journal 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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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4265  
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Author Creigier, S.E. openurl 
  Title Trailer problems and solutions Type (up) Journal Article
  Year 1987 Publication Current Therapy in Equine Medicine Abbreviated Journal  
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  Notes Cited By (since 1996): 1; Export Date: 24 October 2008 Approved no  
  Call Number Admin @ knut @ Serial 4578  
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Author Hunte, W.; Horrocks, J.A. url  doi
openurl 
  Title Kin and non-kin interventions in the aggressive disputes of vervet monkeys Type (up) Journal Article
  Year 1987 Publication Behav. Ecol. Sociobiol. Abbreviated Journal  
  Volume 20 Issue Pages 257-263  
  Keywords  
  Abstract Interventions in aggressive disputes were investigated in a free-living troop of vervets (Cercopithecus aethiops sabaeus) in Barbados. Interventions on behalf of kin were more frequent than on behalf of non-kin. Both types of interventions were more likely when the intervening animal outranked the opponent; presumably because retaliation probability, and hence cost of intervening, is low against low ranking opponents. The number of interventions given on behalf of both kin and non-kin increased with the number of disputes in which they were involved. In contrast to kin interventions, the number of interventions given on behalf of non-kin was correlated with that received by non-kin, suggesting that reciprocation is a necessary component of non-kin interventions. Non-kin interventions were more likely when the recipient outranked the opponent, presumably because reciprocation probability is high. Pairs of non-kin form structured reciprocal relationships based on the proportion of interventions allocated to each other, and most non-kin interventions flowed through these relationships. Males intervened on behalf of non-kin more frequently than did females. The implications of the results for the evolution of kin and reciprocal altruism were discussed.  
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  Notes 10.1007/Bf00292178 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4927  
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