| Records |
| 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 |
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Davis |
Editor |
Damania, A.; Gepts, P. |
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Equine Behaviour @ team @ Zeder2011 |
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6316 |
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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 |
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| Volume |
92 |
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no |
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Equine Behaviour @ team @ Stenglein2011 |
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6476 |
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| Author |
Core Development Team, R. |
| Title |
R: a language and environment for statistical computing |
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Book Whole |
| Year |
2011 |
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R foundation for statistical computing |
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Vienna, Austria |
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Equine Behaviour @ team @ Core Development Team2011 |
Serial |
6489 |
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| Author |
Marescot, L.; Pradel, R.; Duchamp, C.; Cubaynes, S.; Mrboutin, E.; Choquet, R. |
| Title |
Capture – recapture population growth rate as a robust tool against detection heterogeneity for population management |
Type |
Journal Article |
| Year |
2011 |
Publication |
Ecol Appl |
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21 |
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Equine Behaviour @ team @ Marescot2011 |
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6491 |
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| Author |
Morgan, T.W.; Elliott, C.L. |
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Comparison of remotely-triggered cameras vs. howling surveys for estimating coyote (Canis latrans) Abundance in central Kentucky |
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Journal Article |
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2011 |
Publication |
J Ky Acad Science |
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72 |
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no |
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Equine Behaviour @ team @ Morgan2011 |
Serial |
6492 |
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| Author |
de Boyer des Roches, A.; Durier, V.; Richard-Yris, M.-A.; Blois-Heulin, C.; Ezzaouïa, M.; Hausberger, M.; Henry, S. |
| Title |
Differential outcomes of unilateral interferences at birth |
Type |
Journal Article |
| Year |
2011 |
Publication |
Biology Letters |
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| Volume |
7 |
Issue |
2 |
Pages |
177-180 |
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| Abstract |
Behavioural modifications, including modifications of emotional reactivity, can occur following early experience such as handling (manual rubbing). Here, we investigated the effects of unilateral tactile stimulation at an early stage on emotional reactions later on. We handled newborn foals intensively on one side of their body. This early unilateral tactile experience had medium-term effects: the reactions of foals to a human approach, when they were 10 days old, differed according to the side stimulated at birth. Fewer right-handled foals accepted contact with humans, they delayed first contact longer and they evaded approaching humans sooner than did non-handled and left-handled foals. These results raise questions concerning the organization of neonatal care in animals and humans. |
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10.1098/rsbl.2010.0979 |
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Equine Behaviour @ team @ |
Serial |
5414 |
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| Author |
McFarland, R.; Majolo, B. |
| Title |
Reconciliation and the Costs of Aggression in Wild Barbary Macaques (Macaca sylvanus): A Test of the Integrated Hypothesis |
Type |
Journal Article |
| Year |
2011 |
Publication |
Ethology |
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no-no |
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The ‘integrated hypothesis’ predicts that reconciliation (the post-conflict friendly interaction between former opponents observed in various group-living species) functions to reduce anxiety and the risk of aggression from the former opponent or a bystander in the aftermath of a conflict. It also predicts that relationship quality between opponents affects the occurrence of reconciliation and modulates the anxious response of the opponents after a conflict. Because of the asymmetric nature of aggressive interactions, the cost of aggression is likely to differ between the victim and the aggressor. The aim of this study was to test the predictions of the ‘integrated hypothesis’ independently for the victim and the aggressor of a conflict. We collected data on two wild groups of Barbary macaques. This study represents, to our knowledge, the first systematic test of the integrated hypothesis on wild, non-provisioned animals. Victims of aggression were at a greater risk of receiving aggression from the former opponent or a bystander after a conflict and showed elevated anxiety. We found no such costs for the aggressor. Reconciliation reduced anxiety in the victim but did not reduce their risk of receiving aggression. Finally, relationship quality affected the occurrence of reconciliation but did not modulate post-conflict anxiety. The results of our study show that the costs of aggression are asymmetrically distributed between the victim and the aggressor. Such differences are likely to lead to different social tactics used by the victim and the aggressor in the aftermath of a conflict. |
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Blackwell Publishing Ltd |
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1439-0310 |
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no |
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Equine Behaviour @ team @ |
Serial |
5416 |
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Schmidt, J.; Scheid, C.; Kotrschal, K.; Bugnyar, T.; Schloegl, C. |
| Title |
Gaze direction – A cue for hidden food in rooks (Corvus frugilegus)? |
Type |
Journal Article |
| Year |
2011 |
Publication |
Behavioural Processes |
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| Volume |
88 |
Issue |
2 |
Pages |
88-93 |
| Keywords |
Gaze; Object choice; Corvids; Effort; Rooks |
| Abstract |
Other individual's head- and eye-directions can be used as social cues indicating the presence of important events. Among birds, ravens and rooks have been shown to co-orient with conspecifics and with humans by following their gaze direction into distant space and behind visual screens. Both species use screens to cache food in private; also, it had been suggested that they may rely on gaze cues to detect hidden food. However, in an object-choice task, ravens failed to do so, and their competitive lifestyle may have prevented them from relying on these cues. Here we tested closely related and cooperative rooks. Food was hidden in one of two cups and the experimenter gazed at the baited cup. In a second experiment, we aimed to increase the birds’ motivation to choose correctly by increasing the investment needed to obtain the reward. To do so, the birds had to pull on a string to obtain the cup. Here, the birds as a group tended to rely on gaze cues. In addition, individual birds quickly learned to use the cue in both experiments. Although rooks may not use gaze cues to find hidden food spontaneously, they may quickly learn to do so. |
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0376-6357 |
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no |
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Equine Behaviour @ team @ |
Serial |
5420 |
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| Author |
Cain, K.E.; Rich, M.S.; Ainsworth, K.; Ketterson, E.D. |
| Title |
Two Sides of the Same Coin? Consistency in Aggression to Conspecifics and Predators in a Female Songbird |
Type |
Journal Article |
| Year |
2011 |
Publication |
Ethology |
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| Volume |
117 |
Issue |
9 |
Pages |
786-795 |
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| Abstract |
Different forms of aggression have traditionally been treated separately according to function or context (e.g., aggression towards a conspecific vs. a predator). However, recent work on individual consistency in behavior predicts that different forms of aggression may be correlated across contexts, suggesting a lack of independence. For nesting birds, aggression towards both conspecifics and nest predators can affect reproductive success, yet the relationship between these behaviors, especially in females, is not known. Here, we examine free-living female dark-eyed juncos (Junco hyemalis) and compare their aggressive responses towards three types of simulated intruders near the nest: a same-sex conspecific, an opposite-sex conspecific, and a nest predator. We also examine differences in the strength of response that might relate to the immediacy of the perceived threat the intruder poses for the female or her offspring. We found greater aggression directed towards a predator than a same-sex intruder and towards a same-sex than an opposite-sex intruder, consistent with a predator being a more immediate threat than a same-sex intruder, followed by an opposite-sex intruder. We also found positive relationships across individuals between responses to a same-sex intruder and a simulated predator, and between responses to a same-sex and an opposite-sex intruder, indicating that individual females are consistent in their relative level of aggression across contexts. If correlated behaviors are mediated by related mechanisms, then different forms of aggression may be expressions of the same behavioral tendency and constrained from evolving independently. |
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Blackwell Publishing Ltd |
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1439-0310 |
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no |
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Equine Behaviour @ team @ |
Serial |
5421 |
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| Author |
Pays, O.; Sirot, E.; Fritz, H. |
| Title |
Collective Vigilance in the Greater Kudu: Towards a Better Understanding of Synchronization Patterns |
Type |
Journal Article |
| Year |
2011 |
Publication |
Ethology |
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no-no |
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Collective detection of predators is one of the main advantages of living in groups in prey species. However, the mechanisms linking individual and collective vigilance remain largely unknown. Here, we investigated individual and collective vigilance in a natural population of greater kudu (Tragelaphus strepsiceros), a gregarious ruminant living under high predation risk. Controlling for environmental, individual and group factors, we show that the proportion of time during which at least one individual was vigilant increased with group size, whereas individual investment in vigilance decreased. We also show that individuals tended to synchronize both vigilance and feeding activities. More generally, and whatever the considered group size, we demonstrate how the independent scanning assumption underestimated both the proportion of time during which no individual was vigilant and the proportion of time during which all individuals were simultaneously vigilant, but overestimated the proportion of time during which one vigilant individual only was present. Our results thus contrast with the point of view that the alternative to independent vigilance is coordinated vigilance and plead for a better description of the processes whereby reciprocal influences between individuals shape collective patterns of vigilance. |
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Blackwell Publishing Ltd |
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1439-0310 |
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no |
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Equine Behaviour @ team @ |
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5425 |
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