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Author (up) Bartoš, L.; Bartošová, J.; Starostová, L. url  doi
openurl 
  Title Position of the head is not associated with changes in horse vision Type Journal Article
  Year 2008 Publication Equine Veterinary Journal Abbreviated Journal  
  Volume 40 Issue 6 Pages 599-601  
  Keywords horse; horse vision; head position; pupil rotation  
  Abstract It has become accepted that the horse cannot see directly in front when the nose is lowered and must therefore rely on the rider. We tested the hypothesis that this conclusion would be correct only if the horse did not adjust the eyeball horizontal axis to changes of the head position. The results of the present study suggest that it is unlikely that horses have limited vision in relation to their head position when driven by the rider, and that the horse maintains the optimal horizontal eyeball position regardless of head position relative to the ground.  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  Series Volume Series Issue Edition  
  ISSN 2042-3306 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5679  
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Author (up) Barwick, R.S.; Mohammed, H.O.; McDonough, P.L.; White, M.E. openurl 
  Title Epidemiologic features of equine Leptospira interrogans of human significance Type Journal Article
  Year 1998 Publication Preventive Veterinary Medicine Abbreviated Journal Prev Vet Med  
  Volume 36 Issue 2 Pages 153-165  
  Keywords Animals; Horse Diseases/epidemiology/*microbiology; Horses/microbiology; Humans; *Leptospira interrogans; New York/epidemiology; Weil Disease/epidemiology/microbiology/*veterinary; Zoonoses/epidemiology/*microbiology  
  Abstract Leptospirosis is a zoonotic bacterial disease caused by Leptospira interrogans. There is a serologic evidence that horses are exposed to L. interrogans and, as a shedder of these organisms, can be a threat to humans. We examined risk factors associated with the risk of testing seropositive to three L. interrogans serovars (L. icterohaemorrhagiae, L. grippotyphosa, and L. canicola) in the horses of New York State, in order to understand the epidemiology of the disease and suggest strategies to control and prevent equine leptospirosis. To carry out this study, blood samples were collected from a random sample of 2551 horses and tested for the presence of antibodies to the above serovars using the microscopic agglutination test. Samples with a titer $100 were considered positive. Clinical and demographic data were collected on each horse, the farms' management practices and ecology. Logistic regression analysis was used to develop a multivariate indexing system and to identify factors significantly associated with the risk of leptospirosis. Four indices were developed based on the possible sources of exposure: rodent exposure index; wildlife exposure index; soil and water index; and management index. The soil and water index was significantly associated with the risk of exposure to all three serovars. Management was positively associated with L. icterohaemorrhagiae and L. canicola. Density of horses turned out together was positively associated with the risk of exposure to L. grippotyphosa. We concluded that indirect exposure of horses to L. interrogans through contaminated soil and water appears to be significantly associated with the risk of exposure to all three serovars. Management appears to play an important role in the exposure to L. interrogans. Modification of management practices might reduce the horses' risk of exposure and hopefully minimize the human hazards.  
  Address Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA  
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  Language English Summary Language Original Title  
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  ISSN 0167-5877 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:9762736 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2653  
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Author (up) BASHORE, T. L.; KEIPER, R.; TURNER ,J. W. JR; KIRKPATRICK J. F. url  openurl
  Title The accuracy of fixed-wing aerial surveys of feral horses on a coastal barrier island Type Journal Article
  Year 1990 Publication Journal of coastal research Abbreviated Journal J. coast. res  
  Volume 6 Issue Pages 53-56  
  Keywords Accuracy; Airborne methods; Vegetation; Barrier islands; Maryland; Ground methods; United States; North America; America  
  Abstract  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0749-0208 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2221  
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Author (up) Basile, M.; Boivin, S.; Boutin, A.; Blois-Heulin, C.; Hausberger, M.; Lemasson, A. url  doi
openurl 
  Title Socially dependent auditory laterality in domestic horses (Equus caballus) Type Journal Article
  Year 2009 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 12 Issue Pages 611-619  
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  Abstract Laterality is now known to be an ubiquitous phenomenon among the vertebrates. Particularly, laterality of auditory processing has been demonstrated in a variety of species, especially songbirds and primates. Such a hemispheric specialization has been shown to depend on factors such as sound structure, species specificity and types of stimuli. Much less is known on the possible influence of social familiarity although a few studies suggest such an influence. Here we tested the influence of the degree of familiarity on the laterality of the auditory response in the domestic horse. This species is known for its social system and shows visible reactions to sounds, with one or two ears moving towards a sound source. By comparing such responses to the playback of different conspecific whinnies (group member, neighbor and stranger), we could demonstrate a clear left hemisphere (LH) preference for familiar neighbor calls while no preference was found for group member and stranger calls. Yet, we found an opposite pattern of ear side preference for neighbor versus stranger calls. These results are, to our knowledge, the first to demonstrate auditory laterality in an ungulate species. They open further lines of thought on the influence of the social “value” of calls and the listener's arousal on auditory processing and laterality.  
  Address Universite de Rennes I, EthoS, Ethologie animale et humaine-UMR 6552-CNRS Station Biologique de Paimpont, 35380, Paimpont, France, basilemuriel@hotmail.com  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 1435-9456 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:19283416 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4761  
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Author (up) Bast, T.F.; Whitney, E.; Benach, J.L. openurl 
  Title Considerations on the ecology of several arboviruses in eastern Long Island Type Journal Article
  Year 1973 Publication The American Journal of Tropical Medicine and Hygiene Abbreviated Journal Am J Trop Med Hyg  
  Volume 22 Issue 1 Pages 109-115  
  Keywords Animals; Antibodies, Viral/analysis; Arboviruses/*isolation & purification; Birds; Brain/microbiology; Ecology; Encephalitis Virus, St. Louis/immunology/isolation & purification; Encephalitis Virus, Western Equine/immunology/isolation & purification; Encephalitis Viruses/immunology/isolation & purification; Encephalitis Viruses, Tick-Borne/immunology/isolation & purification; Encephalomyelitis, Equine/epidemiology/veterinary; Hemagglutination Inhibition Tests; Horse Diseases/epidemiology; Horses; Humans; Insects; Liver/microbiology; Mites; Neutralization Tests; New York; Snakes; Ticks  
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  Series Volume Series Issue Edition  
  ISSN 0002-9637 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:4684881 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2715  
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Author (up) Bates, D. openurl 
  Title Fitting linear mixed models in R Type Journal Article
  Year 2005 Publication R News Abbreviated Journal  
  Volume 5 Issue Pages  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Bates2005 Serial 6293  
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Author (up) Bates, L.A.; Lee, P.C.; Njiraini, N.; Poole, J.H.; Sayialel, K.; Sayialel, S.; Moss, C.J.; Byrne, R. url  openurl
  Title Do Elephants Show Empathy? Type Journal Article
  Year 2008 Publication Journal of Consciousness Studies Abbreviated Journal J Conscious Stud  
  Volume 15 Issue 10-11 Pages 204-225  
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  Abstract Elephants show a rich social organization and display a number of unusual traits. In this paper, we analyse reports collected over a thirty-five year period, describing behaviour that has the potential to reveal signs of empathic understanding. These include coalition formation, the offering of protection and comfort to others, retrieving and 'babysitting' calves, aiding individuals that would otherwise have difficulty in moving, and removing foreign objects attached to others. These records demonstrate that an elephant is capable of diagnosing animacy and goal directedness, and is able to understand the physical competence, emotional state and intentions of others, when they differ from its own. We argue that an empathic understanding of others is the simplest explanation of these abilities, and discuss reasons why elephants appear to show empathy more than other non-primate species.  
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  Notes Approved yes  
  Call Number Equine Behaviour @ team @ Serial 5057  
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Author (up) Bates, L.A.; Byrne, R.W. url  doi
openurl 
  Title Creative or created: Using anecdotes to investigate animal cognition Type Journal Article
  Year 2007 Publication Methods Abbreviated Journal Methods  
  Volume 42 Issue 1 Pages 12-21  
  Keywords Anecdote; Creativity; Intelligence; Deception; Innovation; African elephant  
  Abstract In non-human animals, creative behaviour occurs spontaneously only at low frequencies, so is typically missed by standardised observational methods. Experimental approaches have tended to rely overly on paradigms from child development or adult human cognition, which may be inappropriate for species that inhabit very different perceptual worlds and possess quite different motor capacities than humans. The analysis of anecdotes offers a solution to this impasse, provided certain conditions are met. To be reliable, anecdotes must be recorded immediately after observation, and only the records of scientists experienced with the species and the individuals concerned should be used. Even then, interpretation of a single record is always ambiguous, and analysis is feasible only when collation of multiple records shows that a behaviour pattern occurs repeatedly under similar circumstances. This approach has been used successfully to study a number of creative capacities of animals: the distribution, nature and neural correlates of deception across the primate order; the occurrence of teaching in animals; and the neural correlates of several aptitudes--in birds, foraging innovation, and in primates, innovation, social learning and tool-use. Drawing on these approaches, we describe the use of this method to investigate a new problem, the cognition of the African elephant, a species whose sheer size and evolutionary distance from humans renders the conventional methods of comparative psychology of little use. The aim is both to chart the creative cognitive capacities of this species, and to devise appropriate experimental methods to confirm and extend previous findings.  
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  ISSN 1046-2023 ISBN Medium  
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  Notes also special issue: Neurocognitive Mechanisms of Creativity: A Toolkit Approved no  
  Call Number Equine Behaviour @ team @ Serial 6185  
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Author (up) Bates, L.A.; Sayialel, K.N.; Njiraini, N.W.; Poole, J.H.; Moss, C.J.; Byrne, R.W. doi  openurl
  Title African elephants have expectations about the locations of out-of-sight family members Type Journal Article
  Year 2008 Publication Biology Letters Abbreviated Journal Biol Lett  
  Volume 4 Issue 1 Pages 34-36  
  Keywords elephants, olfaction, urine, individual recognition  
  Abstract Monitoring the location of conspecifics may be important to social mammals. Here, we use an expectancy-violation paradigm to test the ability of African elephants (Loxodonta africana) to keep track of their social companions from olfactory cues. We presented elephants with samples of earth mixed with urine from female conspecifics that were either kin or unrelated to them, and either unexpected or highly predictable at that location. From behavioural measurements of the elephants' reactions, we show that African elephants can recognize up to 17 females and possibly up to 30 family members from cues present in the urine-earth mix, and that they keep track of the location of these individuals in relation to themselves.  
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  Notes Approved yes  
  Call Number Equine Behaviour @ team @ Serial 4332  
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Author (up) Bateson, M.; Kacelnik, A. url  doi
openurl 
  Title Starlings' preferences for predictable and unpredictable delays to food Type Journal Article
  Year 1997 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 53 Issue 6 Pages 1129-1142  
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  Abstract Risk-sensitive foraging theory is based on the premise that unpredictable runs of good or bad luck can cause a variable food source to differ in fitness value from a fixed food source yielding the same average rate of gain but no unpredictability. Thus, risk-sensitive predictions are dependent on the food intake from variable sources being not only variable but also unpredictable or `risky' in outcome. This study tested whether unpredictability is a component of the value that foraging starlings,Sturnus vulgarisattribute to food sources that are variable in the delay to obtain food. Two groups of birds chose between a fixed and a variable delay option; the variable option was unpredictable in the risky group and predictable in the risk-free group in the overall rate of intake it yielded. In both groups the fixed option was adjusted by titration to quantify the magnitude of preference for predictable and unpredictable variance. On negative energy budgets both groups were significantly risk-prone, with the risky group being significantly more risk-prone than the risk-free group. Switching the birds to positive budgets by doubling the size of each food reward had no significant effect on preference, and similar trends to those found with negative budgets were observed. These results are not readily explained by risk-sensitive foraging theory, but may be explained by the algorithm used by the birds to attribute value to average expected rewards.  
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  Notes Approved no  
  Call Number Serial 2108  
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