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Author Harris, F. url  doi
openurl 
  Title On the Use of Windows for Harmonic Analysis with the Discrete Fourier Transform Type Journal Article
  Year 1978 Publication (down) Proc IEEE Abbreviated Journal  
  Volume 66 Issue Pages  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Harris1978 Serial 6486  
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Author Webster, M.M.; Laland, K.N. url  doi
openurl 
  Title Social learning strategies and predation risk: minnows copy only when using private information would be costly Type Journal Article
  Year 2008 Publication (down) Proc Biol Sci Abbreviated Journal Proc. R. Soc. Lond. B  
  Volume 275 Issue 1653 Pages 2869-2876  
  Keywords  
  Abstract Animals can acquire information from the environment privately, by sampling it directly, or socially, through learning from others. Generally, private information is more accurate, but expensive to acquire, while social information is cheaper but less reliable. Accordingly, the 'costly information hypothesis' predicts that individuals will use private information when the costs associated with doing so are low, but that they should increasingly use social information as the costs of using private information rise. While consistent with considerable data, this theory has yet to be directly tested in a satisfactory manner. We tested this hypothesis by giving minnows (Phoxinus phoxinus) a choice between socially demonstrated and non-demonstrated prey patches under conditions of low, indirect and high simulated predation risk. Subjects had no experience (experiment 1) or prior private information that conflicted with the social information provided by the demonstrators (experiment 2). In both experiments, subjects spent more time in the demonstrated patch than in the non-demonstrated patch, and in experiment 1 made fewer switches between patches, when risk was high compared with when it was low. These findings are consistent with the predictions of the costly information hypothesis, and imply that minnows adopt a 'copy-when-asocial-learning-is-costly' learning strategy.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6196  
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Author Chapron, G.; Treves, A. url  doi
openurl 
  Title Blood does not buy goodwill: allowing culling increases poaching of a large carnivore Type Journal Article
  Year 2016 Publication (down) Proc Biol Sci Abbreviated Journal Proc. R. Soc. Lond. B  
  Volume 283 Issue 1830 Pages  
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  Abstract Quantifying environmental crime and the effectiveness of policy interventions is difficult because perpetrators typically conceal evidence. To prevent illegal uses of natural resources, such as poaching endangered species, governments have advocated granting policy flexibility to local authorities by liberalizing culling or hunting of large carnivores. We present the first quantitative evaluation of the hypothesis that liberalizing culling will reduce poaching and improve population status of an endangered carnivore. We show that allowing wolf (Canis lupus) culling was substantially more likely to increase poaching than reduce it. Replicated, quasi-experimental changes in wolf policies in Wisconsin and Michigan, USA, revealed that a repeated policy signal to allow state culling triggered repeated slowdowns in wolf population growth, irrespective of the policy implementation measured as the number of wolves killed. The most likely explanation for these slowdowns was poaching and alternative explanations found no support. When the government kills a protected species, the perceived value of each individual of that species may decline; so liberalizing wolf culling may have sent a negative message about the value of wolves or acceptability of poaching. Our results suggest that granting management flexibility for endangered species to address illegal behaviour may instead promote such behaviour.  
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  Call Number Equine Behaviour @ team @ Serial 6379  
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Author Liberg, O.; Chapron, G.; Wabakken, P.; Pedersen, H.C.; Hobbs, N.T.; Sand, H. url  doi
openurl 
  Title Shoot, shovel and shut up: cryptic poaching slows restoration of a large carnivore in Europe Type Journal Article
  Year 2012 Publication (down) Proc Biol Sci Abbreviated Journal Proc. R. Soc. Lond. B  
  Volume 279 Issue 1730 Pages 910-915  
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  Abstract Poaching is a widespread and well-appreciated problem for the conservation of many threatened species. Because poaching is illegal, there is strong incentive for poachers to conceal their activities, and consequently, little data on the effects of poaching on population dynamics are available. Quantifying poaching mortality should be a required knowledge when developing conservation plans for endangered species but is hampered by methodological challenges. We show that rigorous estimates of the effects of poaching relative to other sources of mortality can be obtained with a hierarchical state-space model combined with multiple sources of data. Using the Scandinavian wolf (Canis lupus) population as an illustrative example, we show that poaching accounted for approximately half of total mortality and more than two-thirds of total poaching remained undetected by conventional methods, a source of mortality we term as 'cryptic poaching'. Our simulations suggest that without poaching during the past decade, the population would have been almost four times as large in 2009. Such a severe impact of poaching on population recovery may be widespread among large carnivores. We believe that conservation strategies for large carnivores considering only observed data may not be adequate and should be revised by including and quantifying cryptic poaching.  
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  Call Number Equine Behaviour @ team @ Serial 6380  
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Author Gholib, G.; Heistermann, M.; Agil, M.; Supriatna, I.; Purwantara, B.; Nugraha, T.P.; Engelhardt, A. url  doi
openurl 
  Title Comparison of fecal preservation and extraction methods for steroid hormone metabolite analysis in wild crested macaques Type Journal Article
  Year 2018 Publication (down) Primates Abbreviated Journal Primates  
  Volume 59 Issue 3 Pages 281-292  
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  Abstract Since the non-invasive field endocrinology techniques were developed, several fecal preservation and extraction methods have been established for a variety of species. However, direct adaptation of methods from previous studies for use in crested macaques should be taken with caution. We conducted an experiment to assess the accuracy and stability of fecal estrogen metabolite (E1C) and glucocorticoid metabolite (GCM) concentrations in response to several preservation parameters: (1) time lag between sample collection and fecal preservation; (2) long-term storage of fecal samples in 80% methanol (MeOH) at ambient temperature; (3) different degrees of feces drying temperature using a conventional oven; and (4) different fecal preservation techniques (i.e., freeze-drying, oven-drying, and field-friendly extraction method) and extraction solvents (methanol, ethanol, and commercial alcohol). The study used fecal samples collected from crested macaques (Macaca nigra) living in the Tangkoko Reserve, North Sulawesi, Indonesia. Samples were assayed using validated E1C and GCM enzyme immunoassays. Concentrations of E1C and GCM in unprocessed feces stored at ambient temperature remained stable for up to 8 h of storage after which concentrations of both E1C and GCM changed significantly compared to controls extracted at time 0. Long-term storage in 80% MeOH at ambient temperature affected hormone concentrations significantly with concentrations of both E1C and GCM increasing after 6 and 4 months of storage, respectively. Drying fecal samples using a conventional oven at 50, 70, and 90 °C did not affect the E1C concentrations, but led to a significant decline for GCM concentrations in samples dried at 90 °C. Different fecal preservation techniques and extraction solvents provided similar results for both E1C and GCM concentrations. Our results confirm previous studies that prior to application of fecal hormone analysis in a new species, several preservation parameters should be evaluated for their effects on hormone metabolite stability. The results also provide several options for fecal preservation, extraction, and storage methods that can be selected depending on the condition of the field site and laboratory.  
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  ISSN 1610-7365 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Gholib2018 Serial 6521  
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Author Lee, P. openurl 
  Title Adaptation to environmental change:an evolutionary perspective Type Book Chapter
  Year 1991 Publication (down) Primate responses to environmental changes Abbreviated Journal  
  Volume Issue Pages 39-56  
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  Publisher Chapmann & Hall Place of Publication London Editor H. O. Box  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6523  
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Author Golynski, M.; Szczepanik, M.P.; Wilkolek, P.M.; Adamek, L.R.; Sitkowski, W.; Taszkun, I. pdf  url
openurl 
  Title Influence of hair clipping on transepidermal water loss values in horses: a pilot study Type Journal Article
  Year 2018 Publication (down) Polish Journal of Veterinary Sciences Abbreviated Journal  
  Volume vol. 21 Issue No 1 Pages  
  Keywords horses; transepidermal water loss; clipping  
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  Publisher University of Warmia and Mazury in Olsztyn Place of Publication Editor  
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  Call Number Equine Behaviour @ team @ Serial 6612  
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Author Collins, G.H.; Petersen, S.L.; Carr, C.A.; Pielstick, L. url  doi
openurl 
  Title Testing VHF/GPS Collar Design and Safety in the Study of Free-Roaming Horses Type Journal Article
  Year 2014 Publication (down) Plos One Abbreviated Journal Plos One  
  Volume 9 Issue 9 Pages e103189  
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  Abstract Effective and safe monitoring techniques are needed by U.S. land managers to understand free-roaming horse behavior and habitat use and to aid in making informed management decisions. Global positioning system (GPS) and very high frequency (VHF) radio collars can be used to provide high spatial and temporal resolution information for detecting free-roaming horse movement. GPS and VHF collars are a common tool used in wildlife management, but have rarely been used for free-roaming horse research and monitoring in the United States. The purpose of this study was to evaluate the design, safety, and detachment device on GPS/VHF collars used to collect free-roaming horse location and movement data. Between 2009 and 2010, 28 domestic and feral horses were marked with commercial and custom designed VHF/GPS collars. Individual horses were evaluated for damage caused by the collar placement, and following initial observations, collar design was modified to reduce the potential for injury. After collar modifications, which included the addition of collar length adjustments to both sides of the collar allowing for better alignment of collar and neck shapes, adding foam padding to the custom collars to replicate the commercial collar foam padding, and repositioning the detachment device to reduce wear along the jowl, we observed little to no evidence of collar wear on horses. Neither custom-built nor commercial collars caused injury to study horses, however, most of the custom-built collars failed to collect data. During the evaluation of collar detachment devices, we had an 89% success rate of collar devices detaching correctly. This study showed that free-roaming horses can be safely marked with GPS and/or VHF collars with minimal risk of injury, and that these collars can be a useful tool for monitoring horses without creating a risk to horse health and wellness.  
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  Corporate Author Thesis  
  Publisher Public Library of Science Place of Publication Editor  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6209  
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Author Monfardini, E.; Hadj-Bouziane, F.; Meunier, M. url  doi
openurl 
  Title Model-Observer Similarity, Error Modeling and Social Learning in Rhesus Macaques Type Journal Article
  Year 2014 Publication (down) Plos One Abbreviated Journal Plos One  
  Volume 9 Issue 2 Pages e89825  
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  Abstract Monkeys readily learn to discriminate between rewarded and unrewarded items or actions by observing their conspecifics. However, they do not systematically learn from humans. Understanding what makes human-to-monkey transmission of knowledge work or fail could help identify mediators and moderators of social learning that operate regardless of language or culture, and transcend inter-species differences. Do monkeys fail to learn when human models show a behavior too dissimilar from the animals' own, or when they show a faultless performance devoid of error? To address this question, six rhesus macaques trained to find which object within a pair concealed a food reward were successively tested with three models: a familiar conspecific, a 'stimulus-enhancing' human actively drawing the animal's attention to one object of the pair without actually performing the task, and a 'monkey-like' human performing the task in the same way as the monkey model did. Reward was manipulated to ensure that all models showed equal proportions of errors and successes. The 'monkey-like' human model improved the animals' subsequent object discrimination learning as much as a conspecific did, whereas the 'stimulus-enhancing' human model tended on the contrary to retard learning. Modeling errors rather than successes optimized learning from the monkey and 'monkey-like' models, while exacerbating the adverse effect of the 'stimulus-enhancing' model. These findings identify error modeling as a moderator of social learning in monkeys that amplifies the models' influence, whether beneficial or detrimental. By contrast, model-observer similarity in behavior emerged as a mediator of social learning, that is, a prerequisite for a model to work in the first place. The latter finding suggests that, as preverbal infants, macaques need to perceive the model as 'like-me' and that, once this condition is fulfilled, any agent can become an effective model.  
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  Publisher Public Library of Science Place of Publication Editor  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6195  
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Author Valenchon, M.; Lévy, F.; Moussu, C.; Lansade, L. url  doi
openurl 
  Title Stress affects instrumental learning based on positive or negative reinforcement in interaction with personality in domestic horses Type Journal Article
  Year 2017 Publication (down) Plos One Abbreviated Journal Plos One  
  Volume 12 Issue 5 Pages e0170783  
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  Abstract The present study investigated how stress affects instrumental learning performance in horses (Equus caballus) depending on the type of reinforcement. Horses were assigned to four groups (N = 15 per group); each group received training with negative or positive reinforcement in the presence or absence of stressors unrelated to the learning task. The instrumental learning task consisted of the horse entering one of two compartments at the appearance of a visual signal given by the experimenter. In the absence of stressors unrelated to the task, learning performance did not differ between negative and positive reinforcements. The presence of stressors unrelated to the task (exposure to novel and sudden stimuli) impaired learning performance. Interestingly, this learning deficit was smaller when the negative reinforcement was used. The negative reinforcement, considered as a stressor related to the task, could have counterbalanced the impact of the extrinsic stressor by focusing attention toward the learning task. In addition, learning performance appears to differ between certain dimensions of personality depending on the presence of stressors and the type of reinforcement. These results suggest that when negative reinforcement is used (i.e. stressor related to the task), the most fearful horses may be the best performers in the absence of stressors but the worst performers when stressors are present. On the contrary, when positive reinforcement is used, the most fearful horses appear to be consistently the worst performers, with and without exposure to stressors unrelated to the learning task. This study is the first to demonstrate in ungulates that stress affects learning performance differentially according to the type of reinforcement and in interaction with personality. It provides fundamental and applied perspectives in the understanding of the relationships between personality and training abilities.  
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  Publisher Public Library of Science Place of Publication Editor  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6202  
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