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| Author |
Marr, I.; Farmer, K.; Krueger, K. |
| Title |
Evidence for Right-Sided Horses Being More Optimistic than Left-Sided Horses |
Type  |
Journal Article |
| Year |
2018 |
Publication |
Animals |
Abbreviated Journal |
Animals |
| Volume |
8 |
Issue |
12 |
Pages |
219 |
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| Abstract |
An individual's positive or negative perspective when judging an ambiguous stimulus (cognitive bias) can be helpful when assessing animal welfare. Emotionality, as expressed in approach or withdrawal behaviour, is linked to brain asymmetry. The predisposition to process information in the left or right brain hemisphere is displayed in motor laterality. The quality of the information being processed is indicated by the sensory laterality. Consequently, it would be quicker and more repeatable to use motor or sensory laterality to evaluate cognitive bias than to perform the conventional judgment bias test. Therefore, the relationship between cognitive bias and motor or sensory laterality was tested. The horses (n = 17) were trained in a discrimination task involving a box that was placed in either a “positive” or “negative” location. To test for cognitive bias, the box was then placed in the middle, between the trained positive and negative location, in an ambiguous location, and the latency to approach the box was evaluated. Results indicated that horses that were more likely to use the right forelimb when moving off from a standing position were more likely to approach the ambiguous box with a shorter latency (generalized linear mixed model, p < 0.01), and therefore displayed a positive cognitive bias (optimistic). |
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2076-2615 |
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| Call Number |
Equine Behaviour @ team @ ani8120219 |
Serial |
6439 |
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| Author |
Passilongo, D.; Marchetto, M.; Apollonio, M. |
| Title |
Singing in a wolf chorus: structure and complexity of a multicomponent acoustic behaviour |
Type |
Journal Article |
| Year |
2017 |
Publication |
Hystrix, the Italian Journal of Mammalogy |
Abbreviated Journal |
Hysterix |
| Volume |
28 |
Issue |
2 |
Pages |
180-185 |
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| Abstract |
Wolf choruses ( Canis lupus ) are complex, multicomponent signals, composed by a series of different vocalizations emitted by a pack. Although howls, the main component, have been highly studied, poor attention has been drawn upon the other vocalizations of the chorus. In this study, we investigate the structure of the chorus by means of the analysis and the quantification of the different components, taking advantage both of the digital sound recording and analysis, and of the modern statistical methodologies. We provide for the first time a detailed, objective description of the types of call emitted during the wolf howlings, combining spectrographic examinations, spectral analyses and automated classifications, with the aim to identify different types of call. Our results show that wolf choruses have a rich, complex structure, that reveals six other types of call, to be added to those howls already described in literature. Wolf choruses are typically composed by other three different types of calls: the bark, i.e. relatively long calls characterized by low frequencies and the presence of harsh components (deterministic chaos); the whimper, characterized by a harmonic structure and a very short duration; and the growl, a call with a noisy structure, low frequencies but relative long duration. Although further investigations are necessary to understand the meaning of the different calls, this research provides a basis for those studies that aim to compare wolves and other canids vocal behaviour. |
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0394-1914 |
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Equine Behaviour @ team @ Passilongo2017 |
Serial |
6441 |
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| Author |
Mladenoff, D.J.; Sickley, T.A.; Wydeven, A.P. |
| Title |
Predicting gray wolf landscape recolonization: logistic regression models vs. new field data |
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Journal Article |
| Year |
1999 |
Publication |
Ecol Appl |
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9 |
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Equine Behaviour @ team @ Mladenoff1999 |
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6442 |
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| Author |
Ripple, W.J.; Estes, J.A.; Beschta, R.L.; Wilmers, C.C.; Ritchie, E.G.; Hebblewhite, M. |
| Title |
Status and ecological effects of the world's largest carnivores |
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Journal Article |
| Year |
2014 |
Publication |
Science |
Abbreviated Journal |
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343 |
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no |
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Equine Behaviour @ team @ Ripple2014 |
Serial |
6445 |
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| Author |
Walpole, M.J.; Leader-Williams, N. |
| Title |
Tourism and flagship species in conservation |
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Journal Article |
| Year |
2002 |
Publication |
Biodivers Conserv |
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11 |
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Equine Behaviour @ team @ Walpole2002 |
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6446 |
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| Author |
Kleiven, J.; Bjerke, T.; Kaltenborn, B.P. |
| Title |
Factors influencing the social acceptability of large carnivore behaviours |
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Journal Article |
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2004 |
Publication |
Biodivers Conserv |
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13 |
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no |
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Equine Behaviour @ team @ Kleiven2004 |
Serial |
6447 |
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| Author |
Berger, K.M. |
| Title |
Carnivore-Livestock conflicts: effects of subsidized predator control and economic correlates on the sheep industry |
Type |
Journal Article |
| Year |
2006 |
Publication |
Conserv Biol |
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20 |
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no |
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Equine Behaviour @ team @ Berger2006 |
Serial |
6448 |
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| Author |
Breitenmoser, U. |
| Title |
Large predators in the Alps: the fall and rise of man's competitors |
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Journal Article |
| Year |
1998 |
Publication |
Biol Conserv |
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83 |
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Equine Behaviour @ team @ Breitenmoser1998 |
Serial |
6450 |
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| Author |
Chapron, G.; Kaczensky, P.; Linnell, J.D.C.; Arx, M.; Huber, D.; Andrén, H. |
| Title |
Recovery of large carnivores in Europe's modern human-dominated landscapes |
Type |
Journal Article |
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2014 |
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Science |
Abbreviated Journal |
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346 |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ Chapron2014 |
Serial |
6451 |
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| Author |
Ripple, W.J.; Beschta, R.L. |
| Title |
Trophic cascades in Yellowstone: The first 15 years after wolf reintroduction |
Type |
Journal Article |
| Year |
2012 |
Publication |
Biol Conserv |
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145 |
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no |
| Call Number |
Equine Behaviour @ team @ Ripple2012 |
Serial |
6452 |
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