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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0394-9370 |
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doi: 10.1080/03949370.2011.554885 |
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Equine Behaviour @ team @ |
Serial |
6177 |
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Author |
Meriggi, A.; Dagradi, V.; Dondina, O.; Perversi, M.; Milanesi, P.; Lombardini, M.; Raviglione, S.; Repossi, A. |
Title |
Short-term responses of wolf feeding habits to changes of wild and domestic ungulate abundance in Northern Italy |
Type |
Journal Article |
Year |
2014 |
Publication |
Ethology Ecology & Evolution |
Abbreviated Journal |
Ethology Ecology & Evolution |
Volume |
27 |
Issue |
4 |
Pages |
389-411 |
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Taylor & Francis |
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0394-9370 |
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doi: 10.1080/03949370.2014.986768 |
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Equine Behaviour @ team @ |
Serial |
6688 |
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Author |
Seferta, A.; Guay, P.-J.; Marzinotto, E.; Lefebvre, L. |
Title |
Learning Differences between Feral Pigeons and Zenaida Doves: The Role of Neophobia and Human Proximity |
Type |
Journal Article |
Year |
2001 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
Volume |
107 |
Issue |
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Pages |
281-293 |
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Abstract |
Learning differences predicted from ecological variables can be confounded with differences in wariness of novel stimuli (neophobia). Previous work on feral pigeons (Columba livia), as well as on group-feeding and territorial zenaida doves (Zenaida aurita), reported individual and social learning differences predicted from social foraging mode. In the present study, we show that speed of learning a foraging task covaries with neophobia and latency to feed from a familiar dish in the three types of columbids. Pigeons were much faster than either territorial or group-feeding zenaida doves on all tests conducted in captivity, but showed unexpectedly strong neophobia in some urban flocks during field tests. Human proximity strongly affected performance in group-feeding doves both in the field and in captivity. They were slightly faster at learning than their territorial conspecifics in cage tests. In multiple regressions, species identity, but not social foraging mode, significantly predicted individual variation in learning, as did individual variation in neophobia. Wariness of novel stimuli and species differences associated with artificial selection appear to be more important than foraging mode and wariness of humans in accounting for learning differences between these columbids. |
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Equine Behaviour @ team @ |
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2184 |
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Author |
Sakura O; Matsuzawa T |
Title |
Flexibility of wild chimpanzees nut-cracking behavior using stone hammers and anvils: an experimental analysis |
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Journal Article |
Year |
1991 |
Publication |
Ethology |
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Ethology |
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87 |
Issue |
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237 |
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Equine Behaviour @ team @ |
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3038 |
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Author |
Hampton, R.R. |
Title |
Animal Minds: Beyond Cognition to Consciousness |
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Journal Article |
Year |
2001 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
Volume |
107 |
Issue |
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Pages |
1055-1056 |
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refbase @ user @ |
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3487 |
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Author |
Rendall, D. |
Title |
Review of Machiavellian Intelligence II: Extensions and Evaluations |
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Journal Article |
Year |
1999 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
Volume |
105 |
Issue |
2 |
Pages |
178-182 |
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Equine Behaviour @ team @ |
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3998 |
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Author |
Koops, M.A.; Abrahams, M.V. |
Title |
Assessing the Ideal Free Distribution: Do Guppies Use Aggression as Public Information about Patch Quality? |
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Journal Article |
Year |
1999 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
Volume |
105 |
Issue |
9 |
Pages |
737-746 |
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Aggression can be costly to foragers, yet some recent research suggests that foragers should use aggression as a cue to patch quality (the attractive aggression hypothesis). If aggression is predictive of patch quality, then the attractive aggression hypothesis predicts that the distribution of foragers should follow the distribution of aggression. If, instead, aggression is repulsive because it is costly, then the distribution of foragers should diverge from the distribution of aggression. We tested the attractive aggression hypothesis using female guppies, Poecilia reticulata, and found that the distribution of foragers followed the distribution of food, but was unaffected by the distribution of aggression. These data do not support the attractive aggression hypothesis, but instead suggest that the distribution of aggression is a consequence of the distribution of foragers, and that aggression is not used as public information about patch quality. |
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Equine Behaviour @ team @ |
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4271 |
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Ceacero, F.; Landete-Castillejos, T.; Garcia, A.J.; Estevez, J.A.; Gallego, L. |
Title |
Kinship Discrimination and Effects on Social Rank and Aggressiveness Levels in Iberian Red Deer Hinds |
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Journal Article |
Year |
2007 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
Volume |
113 |
Issue |
12 |
Pages |
1133-1140 |
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Abstract Kin recognition is a widespread phenomenon that allows individuals to benefit by enhancing their inclusive fitness, and one of its most common forms is reducing aggressiveness towards relatives. We carried out an experiment with Iberian red deer hinds (Cervus elaphus hispanicus) in order to examine kin biases in dominance behaviour and its consequences on social rank. Three enclosed groups (n = 36, 23 and 21, respectively) were monitored during two lactation seasons and social rank hierarchies were assessed by analysing aggressive interactions matrices with Matman 1.1 software. Aggressive interactions between related hinds was significantly smaller than expected (chi2 = 5.02, df = 1, p = 0.025), not only between mother and daughter but also in second and third kinship degrees. Although rates of aggressiveness were similar to data published relating free-ranging C. e. scoticus, aggressive interactions with relatives were significantly smaller (chi2 = 39.0, df = 1, p < 0.001). This reduction of aggressiveness between related hinds was not the result of these hinds having a lower social rank: social rank was only related to age and weight, but not to kinship degree, calf sex or calving date. The decrease of aggressiveness towards first-, second- and third-degree relatives shows a complex kin recognition system in deer. Possible nepotistic roles in lactation include preventing milk thefts by non-kin and disturbing feeding of unrelated hinds. |
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Equine Behaviour @ team @ |
Serial |
4311 |
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Author |
Pannozzo, P.L.; Phillips, K.A.; Haas, M.E.; Mintz, E.M. |
Title |
Social Monitoring Reflects Dominance Relationships in a Small Captive Group of Brown Capuchin Monkeys (Cebus apella) |
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Journal Article |
Year |
2007 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
Volume |
113 |
Issue |
9 |
Pages |
881-888 |
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Abstract In several studies of social monitoring in primates, subordinate animals directed more visual attention toward dominant animals than vice versa. This behavior is thought to enable subordinate animals to avoid conflict. We sought to clarify whether visual attention behavior functions in this manner in a small captive group of brown capuchin monkeys, Cebus apella. We tested the hypothesis that social monitoring is related to dominance status. Dominance status was determined based on the directionality of aggressive behavior, and visual attention was quantified by using focal animal sampling. Subordinate animals directed significantly more visual attention toward others than dominant animals. Subordinate animals also looked more frequently at the animals that attacked them and others the most. The results indicate that social monitoring behavior in this captive group was driven by conflict-avoidance. |
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Equine Behaviour @ team @ |
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4312 |
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Author |
Blumstein, D. T.; Barrow, L.; Luterra, M. |
Title |
Olfactory Predator Discrimination in Yellow-Bellied Marmots |
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Journal Article |
Year |
2008 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
Volume |
114 |
Issue |
11 |
Pages |
1135 - 1143 |
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The mechanism underlying olfactory predator identification may be relatively experience-independent, or it may rely on specific experience with predators. A mechanism by which prey might identify novel predators relies on the inevitable creation of sulfurous metabolites that are then excreted in the urine of carnivorous mammals. We tested whether free-living, yellow-bellied marmots (Marmota flaviventris) and mid-sized herbivores that fall prey to a variety of carnivorous mammals could discriminate herbivore (elk-Cervus elephas) urine from predator (red fox-Vulpes vulpes, coyote-Canis latrans, mountain lion-Felis concolor, wolf-Canis lupus) urine, a novel herbivore (moose-Alces alces), and a distilled water control. We further asked how specific this assessment was by testing whether marmots responded differently to predators representing different levels of risk and to familiar vs. unfamiliar predators. We found that marmots responded more to urine from coyotes (a familiar predator on adults), mountain lions (a potentially unfamiliar predator that could kill adults) and wolves (a locally extinct predator that could kill adults) than to elk urine (a non-predator). Red fox (a predator that poses a risk only to recently emerged marmot pups) urine elicited a less substantial (but not significantly so) response than coyote urine. Marmots can identify predators, even novel ones, using olfactory cues, suggesting that experience with a specific predator is not required to identify potential threats. |
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Equine Behaviour @ team @ |
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4641 |
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