| Records |
| Author |
Sol, D. |
| Title |
Behavioural flexibility: a neglected issue in the ecological and evolutionary literature |
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Book Chapter |
| Year |
2003 |
Publication |
Animal innovation. |
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Pages |
63-82 |
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Oxford University Press |
Place of Publication |
Oxford |
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S. M. Reader and K. N. Laland |
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Equine Behaviour @ team @ |
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6532 |
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| Author |
Lee, P.C. |
| Title |
Innovation as a behavioural response to environmental challenges |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal Innovation |
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Pages |
261-279 |
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Oxford University Press |
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Oxford |
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S. M. Reader and K. N. Laland |
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Equine Behaviour @ team @ |
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6534 |
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| Author |
Laland, K. N.; van Bergen, Y |
| Title |
Experimental studies of innovation in the guppy |
Type |
Journal Article |
| Year |
2003 |
Publication |
Animal Innovation |
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Pages |
155-174 |
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Oxford University Press |
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Ox |
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S. M. Reader and K. N. Laland |
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Equine Behaviour @ team @ |
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6537 |
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| Author |
Greenberg, R. |
| Title |
The role of neophobia and neophilia in the development of innovative behavour in birds |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal Innovation |
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Oxford University Press |
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Oxford |
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S. M. Reader and K. N. Laland |
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Equine Behaviour @ team @ |
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6547 |
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| Author |
Reader, S. M.; MacDonald, K. |
| Title |
Environmental variability and primate behavioural flexibiity |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal Innovation |
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Pages |
83-116 |
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Oxford University Press |
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Oxford |
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Reader, S. M.; Laland, K. L. |
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Equine Behaviour @ team @ |
Serial |
6548 |
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| Author |
Reader, S. M.; Laland, K.N. |
| Title |
Animal Innovation |
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Book Whole |
| Year |
2003 |
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Oxford University Press |
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Oxford |
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Equine Behaviour @ team @ |
Serial |
6531 |
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| Author |
Pawluski, J.; Jego, P.; Henry, S.; Bruchet, A.; Palme, R.; Coste, C.; Hausberger, M. |
| Title |
Low plasma cortisol and fecal cortisol metabolite measures as indicators of compromised welfare in domestic horses (Equus caballus) |
Type |
Journal Article |
| Year |
2017 |
Publication |
Plos One |
Abbreviated Journal |
Plos One |
| Volume |
12 |
Issue |
9 |
Pages |
e0182257 |
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| Abstract |
The hypothalamic-pituitary-adrenal (HPA) axis response to chronic stress is far from straight forward, particularly with regards to animal welfare. There are reports of no effect as well as both decreases and increases in cortisol after chronic stressors. Therefore, the first aim of the present study was to determine how measures of compromised welfare, such as chronic pain and haematological anomalies, related to cortisol levels in domestic horses (Equus caballus). Domestic horses are an informative model to investigate the impact of chronic stress (due to environment, pain, work, housing conditions...) on the HPA axis. The second aim was to determine whether levels of fecal cortisol metabolites (FCM) may be used as an indicator of welfare measures. The present study used fifty-nine horses (44 geldings and 15 mares), from three riding centres in Brittany, France. The primary findings show that horses whose welfare was clearly compromised (as indicated by an unusual ears backward position, presence of vertebral problems or haematological anomalies, e.g. anaemia) also had lower levels of both FCM and plasma cortisol. This work extends our previous findings showing that withdrawn postures, indicators of depressive-like behavior in horses, are associated with lower plasma cortisol levels. We also found that evening plasma cortisol levels positively correlated with FCM levels in horses. Future research aims to determine the extent to which factors of influence on welfare, such as living conditions (e.g. single stalls versus group housing in pasture or paddocks), early life factors, and human interaction, act as mediators of cortisol levels in horses. |
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Public Library of Science |
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no |
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Equine Behaviour @ team @ |
Serial |
6516 |
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| Author |
Broekhuis, F.; Madsen, E.K.; Keiwua, K.; Macdonald, D.W. |
| Title |
Using GPS collars to investigate the frequency and behavioural outcomes of intraspecific interactions among carnivores: A case study of male cheetahs in the Maasai Mara, Kenya |
Type |
Journal Article |
| Year |
2019 |
Publication |
Plos One |
Abbreviated Journal |
Plos One |
| Volume |
14 |
Issue |
4 |
Pages |
e0213910 |
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Intraspecific interactions between individuals or groups of individuals of the same species are an important component of population dynamics. Interactions can be static, such as spatial overlap, or dynamic based on the interactions of movements, and can be mediated through communication, such as the deployment of scent marks. Interactions and their behavioural outcomes can be difficult to determine, especially for species that live at low densities. With the use of GPS collars we quantify both static and dynamic interactions between male cheetahs (Acinonyx jubatus) and the behavioural outcomes. The 99% home-ranges of males overlapped significantly while there was little overlap of the 50% home-ranges. Despite this overlap, male cheetahs rarely came into close proximity of one another, possibly because presence was communicated through frequent visits to marking posts. The minimum distance between individuals in a dyad ranged from 89m to 196m but the average proximity between individuals ranged from 17,145 ± 6,865m to 26,367 ± 11,288m. Possible interactions took place more frequently at night than by day and occurred mostly in the 50% home-range of one individual of a dyad or where cores of both individuals overlapped. After a possible encounter male cheetahs stayed in close proximity to each other for up to 6 hours, which could be the result of a territory defence strategy or the presence of a receptive female. We believe that one of the encounters between a singleton and a 5-male coalition resulted in the death of the singleton. Our results give new insights into cheetah interactions, which could help our understanding of ecological processes such as disease transmission. |
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Public Library of Science |
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no |
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Equine Behaviour @ team @ |
Serial |
6562 |
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| Author |
Krueger, K.; Esch, L.; Byrne, R. |
| Title |
Animal behaviour in a human world: A crowdsourcing study on horses that open door and gate mechanisms |
Type |
Journal Article |
| Year |
2019 |
Publication |
Plos One |
Abbreviated Journal |
Plos One |
| Volume |
14 |
Issue |
6 |
Pages |
e0218954 |
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Anecdotal reports of horses opening fastened doors and gates are an intriguing way of exploring the possible scope of horses' problem-solving capacities. The species' natural environment has no analogues of the mechanisms involved. Scientific studies on the topic are missing, because the rate of occurrence is too low for exploration under controlled conditions. Therefore, we compiled from lay persons case reports of horses opening closed doors and gates. Additionally, we collected video documentations at the internet platform YouTube, taking care to select raw data footage of unedited, clearly described and clearly visible cases of animals with no distinct signs of training or reduced welfare. The data included individuals opening 513 doors or gates on hinges, 49 sliding doors, and 33 barred doors and gateways; mechanisms included 260 cases of horizontal and 155 vertical bars, 43 twist locks, 42 door handles, 34 electric fence handles, 40 carabiners, and 2 locks with keys. Opening was usually for escape, but also for access to food or stable-mates, or out of curiosity or playfulness. While 56 percent of the horses opened a single mechanism at one location, 44 percent opened several types of mechanism (median = 2, min. = 1, max. = 5) at different locations (median = 2, min. = 1, max. = 4). The more complex the mechanism was, the more movements were applied, varying from median 2 for door handles to 10 for carabiners. Mechanisms requiring head- or lip-twisting needed more movements, with significant variation between individuals. 74 horses reported in the questionnaire had options for observing the behaviour in stable mates, 183 did not, which indicates that the latter learned to open doors and gates either individually or from observing humans. Experience favours opening efficiency; subjects which opened several door types applied fewer movements per lock than horses which opened only one door type. We failed to identify a level of complexity of door-fastening mechanism that was beyond the learning capacity of the horse to open. Thus, all devices in frequent use, even carabiners and electric fence handles, are potentially vulnerable to opening by horses, something which needs to be considered in relation to keeping horses safely. |
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Public Library of Science |
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Equine Behaviour @ team @ |
Serial |
6580 |
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| Author |
Dwan, K.; Altman, D.G.; Arnaiz, J.A.; Bloom, J.; Chan, A.-W.; Cronin, E.; Decullier, E.; Easterbrook, P.J.; Von Elm, E.; Gamble, C.; Ghersi, D.; Ioannidis, J.P.A.; Simes, J.; Williamson, P.R. |
| Title |
Systematic Review of the Empirical Evidence of Study Publication Bias and Outcome Reporting Bias |
Type |
Journal Article |
| Year |
2008 |
Publication |
Plos One |
Abbreviated Journal |
Plos One |
| Volume |
3 |
Issue |
8 |
Pages |
e3081 |
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Background The increased use of meta-analysis in systematic reviews of healthcare interventions has highlighted several types of bias that can arise during the completion of a randomised controlled trial. Study publication bias has been recognised as a potential threat to the validity of meta-analysis and can make the readily available evidence unreliable for decision making. Until recently, outcome reporting bias has received less attention. Methodology/Principal Findings We review and summarise the evidence from a series of cohort studies that have assessed study publication bias and outcome reporting bias in randomised controlled trials. Sixteen studies were eligible of which only two followed the cohort all the way through from protocol approval to information regarding publication of outcomes. Eleven of the studies investigated study publication bias and five investigated outcome reporting bias. Three studies have found that statistically significant outcomes had a higher odds of being fully reported compared to non-significant outcomes (range of odds ratios: 2.2 to 4.7). In comparing trial publications to protocols, we found that 40-62% of studies had at least one primary outcome that was changed, introduced, or omitted. We decided not to undertake meta-analysis due to the differences between studies. Conclusions Recent work provides direct empirical evidence for the existence of study publication bias and outcome reporting bias. There is strong evidence of an association between significant results and publication; studies that report positive or significant results are more likely to be published and outcomes that are statistically significant have higher odds of being fully reported. Publications have been found to be inconsistent with their protocols. Researchers need to be aware of the problems of both types of bias and efforts should be concentrated on improving the reporting of trials. |
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Public Library of Science |
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Equine Behaviour @ team @ |
Serial |
6644 |
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