| Records |
| Author |
Baragli, P.; Paoletti, E.; Vitale, V.; Sighieri, C. |
| Title |
Looking in the correct location for a hidden object: brief note about the memory of donkeys (Equus asinus) |
Type |
Journal Article |
| Year |
2011 |
Publication  |
Ethology Ecology & Evolution |
Abbreviated Journal |
Ethology Ecology & Evolution |
| Volume |
23 |
Issue |
2 |
Pages |
187-192 |
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| Abstract |
In recent years, considerable literature has been published on cognition in horses; however, much less is known about the cognitive abilities of domestic donkey (Equus asinus). This study aimed to expand our knowledge of donkey cognition by assessing their short-term memory capacity. We employed a detour problem combined with the classic delayed-response task, which has been extensively used to compare working memory duration in a variety of different species. A two-point choice apparatus was used to investigate location recall and search behaviour for a food target, after a short delay following its disappearance. Four donkeys completed the task with a 10 sec delay, while four others were tested with a 30 sec delay. Overall, each group performed above chance level on the test, showing that subjects had successfully encoded, maintained, and retrieved the existence and location of the target despite the loss of visual contact. |
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Taylor & Francis |
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| ISSN |
0394-9370 |
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doi: 10.1080/03949370.2011.554885 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6177 |
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| Author |
Wasser, S.K.; Keim, J.L.; Taper, M.L.; Lele, S.R. |
| Title |
The influences of wolf predation, habitat loss, and human activity on caribou and moose in the Alberta oil sands |
Type |
Journal Article |
| Year |
2011 |
Publication |
Frontiers in Ecology and the Environment |
Abbreviated Journal |
Frontiers in Ecology and the Environment |
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Issue |
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Pages |
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| Abstract |
Woodland caribou (Rangifer tarandus caribou) and moose (Alces alces) populations in the Alberta oil sands region of western Canada are influenced by wolf (Canis lupus) predation, habitat degradation and loss, and anthropogenic activities. Trained domestic dogs were used to locate scat from caribou, moose, and wolves during winter surges in petroleum development. Evidence obtained from collected scat was then used to estimate resource selection, measure physiological stress, and provide individual genetic identification for precise mark–recapture abundance estimates of caribou, moose, and wolves. Strong impacts of human activity were indicated by changes in resource selection and in stress and nutrition hormone levels as human-use measures were added to base resource selection models (including ecological variables, provincial highways, and pre-existing linear features with no human activity) for caribou. Wolf predation and resource selection so heavily targeted deer (Odocoileus virginiana or O hemionus) that wolves appeared drawn away from prime caribou habitat. None of the three examined species showed a significant population change over 4 years. However, caribou population estimates were more than double those of previous approximations for this area. Our findings suggest that modifying landscape-level human-use patterns may be more effective at managing this ecosystem than intentional removal of wolves. |
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Ecological Society of America |
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1540-9295 |
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| Notes |
doi: 10.1890/100071 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5397 |
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| Author |
Romero L. M. |
| Title |
Using the reactive scope model to understand why stress physiology predicts survival during starvation in Galápagos marine iguanas |
Type |
Journal Article |
| Year |
2011 |
Publication |
General and Comparative Endocrinology |
Abbreviated Journal |
Gen Comp Endocrinol |
| Volume |
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Issue |
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Pages |
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| Keywords |
Reactive scope; Allostasis; Glucocorticoids; Stress; Survival |
| Abstract |
Even though the term “stress” is widely used, a precise definition is notoriously difficult. Notwithstanding this difficulty, stress continues to be an important concept in biology because it attempts to describe how animals cope with environmental change under emergency conditions. Without a precise definition, however, it becomes nearly impossible to make testable a priori predictions about how physiological and hormonal systems will respond to emergency conditions and what the ultimate impact on the animal will be. The reactive scope model is a recent attempt to formulate testable predictions. This model provides a physiological basis to explain why corticosterone negative feedback, but not baseline corticosterone concentrations, corticosterone responses to acute stress, or the interrenal capacity to secrete corticosterone, is correlated with survival during famine conditions in Galápagos marine iguanas. Reactive scope thus provides a foundation for interpreting and predicting physiological stress responses. |
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0016-6480 |
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no |
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Equine Behaviour @ team @ |
Serial |
5584 |
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| Author |
Krueger, K. . |
| Title |
Soziales Lernen der Pferde |
Type |
Book Chapter |
| Year |
2011 |
Publication |
Göttinger Pferdetage '11: Zucht, Haltung und Ernährung von Sportpferden |
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Issue |
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Pages |
51 |
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FN Verlag |
Place of Publication |
Warendorf |
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978-3885427582 |
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no |
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Equine Behaviour @ team @ |
Serial |
5719 |
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| Author |
Zeder, M.A. |
| Title |
Pathways to animal domestication |
Type |
Book Chapter |
| Year |
2011 |
Publication |
Harlan II: Biodiversity in Agriculture: Domestication, Evolution, and Sustainability |
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University of California |
Place of Publication |
Davis |
Editor |
Damania, A.; Gepts, P. |
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no |
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Equine Behaviour @ team @ Zeder2011 |
Serial |
6316 |
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| Author |
Baragli, P.; Vitale, V.; Paoletti, E.; Mengoli, M.; Sighieri, C. |
| Title |
Encoding the Object Position for Assessment of Short Term Spatial Memory in Horses (Equus caballus) |
Type |
Journal Article |
| Year |
2011 |
Publication |
International Journal of Comparative Psychology |
Abbreviated Journal |
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| Volume |
24 |
Issue |
3 |
Pages |
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| Abstract |
In this study, the detour problem was combined with the classic delayed-response task to investigate equine short-term spatial memory. Test subjects were eight female horses, divided into two groups (A and B) of four subjects each. The motivating object was made to move and disappear behind one oftwo identical obstacles in a two-point-choice apparatus. After a 10 s (Group A) or 30 s (Group B) delay the animal was released to seek the object. Both groups made more correct (14.8 ± 1.3 forGroup A and 13.5 ± 3.1 for Group B, mean ± SD) than incorrect choices (5.3 ± 1.3 for Group A and6.5 ± 3.1 for Group B, mean ± SD) and the performance of each group was significantly above chance level (z = 4.14, p = 0.000, for Group A and z = 3.02, p = 0.002, for Group B). Therefore, tested animals were able to recover the object by approaching the correct obstacle after 10 s or 30 s delays, showing that they had encoded and recovered from memory the existence of the target object and its location. |
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2168-3344 |
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no |
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Equine Behaviour @ team @ |
Serial |
6178 |
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| Author |
Morgan, T.W.; Elliott, C.L. |
| Title |
Comparison of remotely-triggered cameras vs. howling surveys for estimating coyote (Canis latrans) Abundance in central Kentucky |
Type |
Journal Article |
| Year |
2011 |
Publication |
J Ky Acad Science |
Abbreviated Journal |
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| Volume |
72 |
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no |
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Equine Behaviour @ team @ Morgan2011 |
Serial |
6492 |
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| Author |
Stenglein, J.L.; Waits, L.P.; Ausband, D.E.; Zager, P.; Mack, C.M. |
| Title |
Estimating gray wolf pack size and family relationships using non invasive genetic sampling at rendezvous sites |
Type |
Journal Article |
| Year |
2011 |
Publication |
J Mammal |
Abbreviated Journal |
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| Volume |
92 |
Issue |
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Pages |
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no |
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Equine Behaviour @ team @ Stenglein2011 |
Serial |
6476 |
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| Author |
Piro, M.; Benjouad, A.; Karom, A.; Nabich, A.; Benbihi, N.; El Allali, K.; Machmoum, M.; Ouragh, L. |
| Title |
Genetic Structure of Severe Combined Immunodeficiency Carrier Horses in Morocco Inferred by Microsatellite Data |
Type |
Journal Article |
| Year |
2011 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
J. Equine Vet. Sci. |
| Volume |
31 |
Issue |
11 |
Pages |
618-624 |
| Keywords |
Scid; Arab horses; Arab-Barb horses; Microsatellite; Dna; Genetic structure |
| Abstract |
A total of 17 microsatellite deoxyribonucleic acid loci used routinely for horse parentage control were used to evaluate genetic diversity among normal Arabian horses and severe combined immunodeficiency (SCID) carrier Arabian horses (ArS) and normal Arab-Barb horses and SCID carrier Arab-Barb horses (ArbeS). On the basis of the genotype of 186 horses, mean allelic diversity was estimated as 6.82, 5.53, and 6.7059 in normal Arabian horses, ArS, and for both groups of Arab-Barb horses, respectively. Five specific alleles were observed in ArS and ArbeS, with one common with ArS at HMS6, whereas five alleles common between ArS and ArbeS had a high frequency. Expected and observed heterozygosity showed great heterogeneity in the population studied and were similar or higher when compared with other studies on Arabian horses. Coefficient of gene differentiation Gst of Nei associated with Nei's genetic distance and multivariate correspondence analysis indicated a possible differentiation between the studied populations when analyzed separately according to breed. Probability of assignment of a horse to a specific group was assessed using a full and partial Bayesian approach. In all, 80.6% of Arab horses and 78.2% of Arab-Barb horses were assigned properly with a partial Bayesian test, which provided better results than the full one. These findings will be useful for identification of SCID carrier horses by using the microsatellite deoxyribonucleic acid loci used routinely for horse parentage control in our laboratory. |
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Edition |
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| ISSN |
0737-0806 |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6657 |
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| Author |
Baragli, P.; Vitale, V.; Paoletti, E.; Sighieri, C.; Reddon, A.R. |
| Title |
Detour behaviour in horses (Equus caballus) |
Type |
Journal Article |
| Year |
2011 |
Publication |
Journal of Ethology |
Abbreviated Journal |
J. Ethol. |
| Volume |
29 |
Issue |
2 |
Pages |
227-234 |
| Keywords |
Detour behaviour; Equus caballus; Horses; Lateralization; Spatial reasoning |
| Abstract |
The objective of this study was to investigate the ability of horses (Equus caballus) to detour around symmetric and asymmetric obstacles. Ten female Italian saddle horses were each used in three detour tasks. In the first task, the ability to detour around a symmetrical obstacle was evaluated; in the second and third tasks subjects were required to perform a detour around an asymmetrical obstacle with two different degrees of asymmetry. The direction chosen to move around the obstacle and time required to make the detour were recorded. The results suggest that horses have the spatial abilities required to perform detour tasks with both symmetric and asymmetric obstacles. The strategy used to perform the task varied between subjects. For five horses, lateralized behaviour was observed when detouring the obstacle; this was consistently in one direction (three on the left and two on the right). For these horses, no evidence of spatial learning or reasoning was found. The other five horses did not solve this task in a lateralized manner, and a trend towards decreasing lateralization was observed as asymmetry, and hence task difficulty, increased. These non-lateralized horses may have higher spatial reasoning abilities. |
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Springer Japan |
Place of Publication |
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English |
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| ISSN |
0289-0771 |
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no |
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Equine Behaviour @ team @ |
Serial |
5686 |
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