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Sheriff, M.J.; Dantzer, B.; Delehanty, B.; Palme, R.; Boonstra, R. |
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Title |
Measuring stress in wildlife: techniques for quantifying glucocorticoids |
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Journal Article |
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Year |
2011 |
Publication |
Oecologia |
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Volume |
166 |
Issue |
4 |
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869-887 |
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Stress responses play a key role in allowing animals to cope with change and challenge in the face of both environmental certainty and uncertainty. Measurement of glucocorticoid levels, key elements in the neuroendocrine stress axis, can give insight into an animal’s well-being and can aid understanding ecological and evolutionary processes as well as conservation and management issues. We give an overview of the four main biological samples that have been utilized [blood, saliva, excreta (feces and urine), and integumentary structures (hair and feathers)], their advantages and disadvantages for use with wildlife, and some of the background and pitfalls that users must consider in interpreting their results. The matrix of choice will depend on the nature of the study and of the species, on whether one is examining the impact of acute versus chronic stressors, and on the degree of invasiveness that is possible or desirable. In some cases, more than one matrix can be measured to achieve the same ends. All require a significant degree of expertise, sometimes in obtaining the sample and always in extracting and analyzing the glucocorticoid or its metabolites. Glucocorticoid measurement is proving to be a powerful integrator of environmental stressors and of an animal’s condition. |
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1432-1939 |
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Equine Behaviour @ team @ Sheriff2011 |
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6150 |
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Weber-Mzell, D.; Kotanko, P.; Hauer, A.C.; Goriup, U.; Haas, J.; Lanner, N.; Erwa, W.; Ahmaida, I.A.; Haitchi-Petnehazy, S.; Stenzel, M.; Lanzer, G.; Deutsch, J. |
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Title |
Gender, age and seasonal effects on IgA deficiency: a study of 7293 Caucasians |
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Journal Article |
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Year |
2004 |
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European Journal of Clinical Investigation |
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34 |
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3 |
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224-228 |
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Age- and gender-related variability; immunoglobulin A; seasonal variability; serum IgA deficiency |
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Background The frequency of serum IgA deficiency (SIgAD) differs between populations. We examined the prevalence of SIgAD in healthy Caucasians. Materials and methods Serum immunoglobulin A (SIgA) was measured in 7293 volunteers (2264 women, 5029 men) aged 30 ± 14·2 years (mean ± SD; range: 12–66). Serum immunoglobulin A and subnormal SIgA levels were defined by a SIgA level < 0·07 g L-1, and between 0·07 and 0·7 g L-1, respectively. Means were compared by analysis of variance (anova) and analysis of covariance (ancova); frequencies by the χ2 test. Results Fifteen subjects (0·21%; one woman, 14 men) had SIgAD. Subnormal SIgA levels were found in 155 persons (2·13%): 21 females (0·93% of the females) and 134 males (2·66% of the males; difference: 1·74%; 95% CI: 1·12–2·33%; P < 0·001). Males were more likely to have subnormal SIgA levels or SIgAD (odds ratio 3·09, 95% CI: 1·97–4·85). The prevalence of SIgAD and subnormal SIgA was lowest in winter (χ2 = 14·8; P = 0·002; 3 d.f.; and χ2 = 43·2; P < 0·001; 3 d.f., respectively). Serum immunoglobulin A concentrations were significantly higher during winter. Serum immunoglobulin A levels increased with age on average by 0·2 ± 0·06 g L-1 per decade of life (P < 0·001). Taking into account the influence of age, SIgA concentration was lower in females as compared with males. Conclusion The prevalence of SIgAD and subnormal SIgA levels is increased in males. There exists a significant influence of gender, age and seasons on SIgA levels. |
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Blackwell Science Ltd |
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1365-2362 |
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Equine Behaviour @ team @ |
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6127 |
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Author |
Oliveira-Santos, L.G.R.; Machado-Filho, L.C.P.; Tortato, M.A.; Brusius, L. |
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Title |
Influence of extrinsic variables on activity and habitat selection of lowland tapirs (Tapirus terrestris) in the coastal sand plain shrub, southern Brazil |
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Journal Article |
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2010 |
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Mammalian Biology – Zeitschrift für Säugetierkunde |
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75 |
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3 |
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219-226 |
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Behaviour; Circadian rhythmic; Moonlight; Rainfall; Temperature |
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The objectives of this research were to: 1. evaluate the circadian activity patterns of lowland tapirs (Tapirus terrestris) throughout the seasons and 2. study the influence of moonlight, temperature and rainfall on the activity patterns and habitat selection of this species, in the coastal sand shrub in southern Brazil. From June 2005 to June 2006, eight tapirs were monitored in a large enclosure containing open and vegetation-covered areas, using four camera traps. Differences in activity patterns within seasons were found. Tapir predominately presented nocturnal-crepuscular activity; however, they differed in the winter, with cathemeral activity patterns. Covered areas were mostly used during periods of extreme temperatures, with less diurnal and more nocturnal activities within these areas, on hotter days. Activity in open areas mainly occurred during periods of intermediate temperatures, both during the day and in the night. Moonlight intensity did not influence nocturnal activities. On days of precipitation of 34 mm or more, there was no record of open-area activities, despite constant activity in covered-area. |
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1616-5047 |
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Equine Behaviour @ team @ |
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6140 |
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Author |
GONÇALVES DA SILVA, A.; CAMPOS-ARCEIZ, A.; ZAVADA, M.S. |
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Title |
On tapir ecology, evolution and conservation: what we know and future perspectives–part II |
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2013 |
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Integrative Zoology |
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8 |
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1 |
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1-3 |
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Blackwell Publishing Ltd |
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1749-4877 |
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Equine Behaviour @ team @ |
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6141 |
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Author |
Schnabel, C.L.; Babasyan, S.; Freer, H.; Wagner, B. |
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Title |
Quantification of equine immunoglobulin A in serum and secretions by a fluorescent bead-based assay |
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Journal Article |
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Year |
2017 |
Publication |
Veterinary Immunology and Immunopathology |
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188 |
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12-20 |
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Horse; Immunoglobulin A; Monoclonal antibody; Fluorescent bead-based assay; Mucosal secretion |
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Abstract Only few quantitative reports exist about the concentrations and induction of immunoglobulin A (IgA) in mucosal secretions of horses. Despite this, it is widely assumed that IgA is the predominant immunoglobulin on mucosal surfaces in the horse. Here, two new monoclonal antibodies (mAbs) against equine IgA, clones 84-1 and 161-1, were developed and characterized in detail. Both IgA mAbs specifically bound monomeric and dimeric equine IgA in different applications, such as Western blots and fluorescent bead-based assays. Cross-reactivity with other equine immunoglobulin isotypes was not observed. The new IgA mAb 84-1 was used in combination with the previously characterized anti-equine IgA mAb BVS2 for the development and validation of a fluorescent bead-based assay to quantify total IgA in equine serum and various secretions. The IgA assay's linear detection ranged from 64 pg/ml to 1000 ng/ml. For the quantification of IgA in serum or in secretions an IgA standard was purified from serum or nasal wash fluid (secretory IgA), respectively. The different standards were needed for accurate IgA quantification in the respective samples taking the different signal intensities of monomeric and dimeric IgA on the florescent bead-based assay into account. IgA was quantified by the bead-based assay established here in different equine samples of healthy adult individuals. In serum the median total IgA was 0.45 mg/ml for Thoroughbred horses (TB, n = 10) and 1.16 mg/ml in Icelandic horses (ICH, n = 12). In nasopharyngeal secretions of TB (n = 7) 0.13 mg/ml median total IgA was measured, and 0.25 mg/ml for ICH (n = 12). Saliva of ICH (n = 6) contained a median of 0.15 mg/ml, colostrum of Warmbloods (n = 8) a median of 1.89 mg/ml IgA. Compared to IgG1 and IgG4/7 quantified in the same samples, IgA appeared as the major immunoglobulin isotype in nasopharyngeal secretions and saliva while it is a minor isotype in serum and colostrum. The newly developed monoclonal antibodies against equine IgA and the resulting bead-based assay for quantification of total IgA can notably improve the evaluation of mucosal immunity in horses. |
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0165-2427 |
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Equine Behaviour @ team @ |
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6152 |
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Author |
McGreevy, P. |
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Title |
Equine Behavior A Guide for Veterinarians and Equine Scientists |
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Book Whole |
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2012 |
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Chapter 1 – Introduction, Pages 1-36
Chapter 2 – Perception, Pages 37-54
Chapter 3 – Behavior and the brain, Pages 55-84, Caroline Hahn
Chapter 4 – Learning, Pages 85-118
Chapter 5 – Social behavior, Pages 119-150
Chapter 6 – Communication, Pages 151-163
Chapter 7 – Locomotory behavior, Pages 165-187
Chapter 8 – Ingestive behavior, Pages 189-215
Chapter 9 – Eliminative behavior, Pages 217-221
Chapter 10 – Body care, Pages 223-243
Chapter 11 – Behavior of the stallion, Pages 245-264
Chapter 12 – Behavior of the mare, Pages 265-290
Chapter 13 – Training, Pages 291-311, Andrew McLean, Paul McGreevy
Chapter 14 – Handling and transport, Pages 313-329
Chapter 15 – Miscellaneous unwelcome behaviors, their causes and resolution, Pages 331-345
Further reading, Page 347
Glossary, Pages 351-356
Index, Pages 357-369 |
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978-0-7020-2634-8 |
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Equine Behaviour @ team @ |
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6154 |
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Author |
McDonnell, S. |
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Title |
Understanding horse behavior. Your guide to horse health care and management |
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1999 |
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99 pp. |
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The author has conducted much research on equine behaviour, and here presents her findings in a form suitable for owners of horses. Common behavioural problems are mentioned. |
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Blood-Horse Inc. |
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Lexington, KY 40544-4038 |
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English |
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1581500173 |
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Author Affiliation: School of Veterinary Medicine, University of Pennsylvania, PA 19104, USA. |
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Equine Behaviour @ team @ |
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6155 |
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Author |
Ward, A; Webster, M. |
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Title |
Sociality: The Behaviour of Group-Living Animals |
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2016 |
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Covers the aspects of social behaviour of animals in comprehensive form Provides a clear overview to up-to-date empirical and theoretical research on social animal behaviour
Discusses collective animal behaviour, social networks and animal personality in detail
The last decade has seen a surge of interest among biologists in a range of social animal phenomena, including collective behaviour and social networks. In ‘Animal Social Behaviour’, authors Ashley Ward and Michael Webster integrate the most up-to-date empirical and theoretical research to provide a new synthesis of the field, which is aimed at fellow researchers and postgraduate students on the topic. ​ |
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Equine Behaviour @ team @ |
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6156 |
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Author |
Wynne C. D. L. |
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Title |
Animal Cognition: The Mental Lives of Animals |
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2001 |
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Covering a wide range of key topics, from reasoning and communication to sensation and complex problem-solving, this engagingly-written text presents a comprehensive survey of contemporary research on animal cognition. Written for anyone with an interest in animal cognition, but without a background in animal behaviour, it endeavours to explain what makes animals tick.
With numerous illustrations and including exciting recent studies from many little-studied species (such as the weakly electric African fish), this text is ideal for psychology students who are interested in how much of our human cognition is shared by other species, for students of biology who want to know how complex animal behaviour can get, and for all those with an interest in the animal mind. |
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Palgrave |
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9780333923955 |
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Equine Behaviour @ team @ |
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6157 |
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Author |
Parisi, D.R.; Soria, S.A.; Josens, R. |
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Title |
Faster-is-slower effect in escaping ants revisited: Ants do not behave like humans |
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2015 |
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Safety Science |
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72 |
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274-282 |
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Emergency; Evacuation; Egress; Ant egress; Crowd egress; Faster is slower; Pedestrian evacuation; Pedestrian dynamics |
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In this work we studied the trajectories, velocities and densities of ants when egressing under controlled levels of stress produced by a chemical repellent at different concentrations. We found that, unlike other animals escaping under life-and-death conditions and pedestrian simulations, ants do not produce a higher density zone near the exit door. Instead, ants are uniformly distributed over the available space allowing for efficient evacuations. Consequently, the faster-is-slower effect observed in ants (Soria et al., 2012) is clearly of a different nature to that predicted by de social force model. In the case of ants, the minimum evacuation time is correlated with the lower probability of taking backward steps. Thus, as biological model ants have important differences that make their use inadvisable for the design of human facilities. |
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0925-7535 |
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Equine Behaviour @ team @ |
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6161 |
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