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Author Rutberg, A.T.
Title Horse Fly Harassment and the Social Behavior of Feral Ponies Type Journal Article
Year (up) 1987 Publication Ethology Abbreviated Journal Ethology
Volume 75 Issue 2 Pages 145-154
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Abstract Abstract Horse flies (Tabanidae) on and around feral ponies in harem groups were counted at Assateague Island National Seashore, Maryland, U.S.A., between June and August 1985. Harem stallions attracted the most flies; adult mares showed intermediate fly numbers, while few flies landed on foals under any circumstances. The use of thermal and chemical cues by flies selecting a host may have helped create this disparity. When flies were abundant, ponies reduced spacing within the group. Ponies in larger groups suffered from fewer flies than ponies in smaller groups. There was, however, no evidence that ponies merged into larger groups in response to fly harassment, suggesting that biting flies play little role in structuring pony social organization.
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Publisher Wiley/Blackwell (10.1111) Place of Publication Editor
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ISSN 0179-1613 ISBN Medium
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Notes doi: 10.1111/j.1439-0310.1987.tb00648.x Approved no
Call Number Equine Behaviour @ team @ Serial 6417
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Author Black, J.M.
Title Preflight Signalling in Swans: A Mechanism for Group Cohesion and Flock Formation Type Journal Article
Year (up) 1988 Publication Ethology Abbreviated Journal Ethology
Volume 79 Issue 2 Pages 143-157
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Abstract Abstract The preflight behaviour of whooper swans Cygnus cygnus and Bewick's swans Cygnus columbianus bewickii was examined to determine the adaptive significance of the ritual. Analysis of the preflight sequence revealed that the rate of signalling became significantly faster as the time of takeoff approached. This provides the first quantitative evidence that a threshold of excitability is responsible for triggering synchronised flight in social units. Two ultimate and two proximate factors that affect this threshold were uncovered. They are: 1) Maintaining proximity to partners—flight was delayed by birds with non-attentive mates and signalling lasted on average four times longer than those whose mates showed more interest. 2) Maintaining flock cohesiveness—birds which performed signals for longer periods while swimming among uninterested birds were successful in attracting followers 61% of the time. 3) The bird's feeding performance related to dominance status—less successful feeders (potentially hungry birds), flew after little time and few signals. 4) The type of feeding opportunity at the eventual destination—birds which flew to provided feeds (nutritious barley) spent less time performing preflight signals than when they flew to forage on grass fields.
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Corporate Author Thesis
Publisher Blackwell Publishing Ltd Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1439-0310 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5315
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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 Type Journal Article
Year (up) 1991 Publication Ethology Abbreviated Journal Ethology
Volume 87 Issue Pages 237
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Call Number Equine Behaviour @ team @ Serial 3038
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Author Noë, R.; van Schaik, C.P.; van Hooff, J.A.R.A.M.
Title The Market Effect: an Explanation for Pay-off Asymmetries among Collaborating Animals Type Journal Article
Year (up) 1991 Publication Ethology Abbreviated Journal Ethology
Volume 87 Issue 1-2 Pages 97-118
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Abstract Abstract * 1Animals can derive leverage over others from (a) resource holding power, based for instance on fighting ability or dominance, and (b) the possession of commodities, such as special skills and resources that cannot be taken away by force. * 2We contend that power based on the possession of commodities strongly depends on the level of supply and demand for that commodity, a phenomenon we call the ‘market effect’. * 3Several theoretical and empirical examples are given of social systems in which animals belong to two distinct classes that offer two different kinds of commodities. * 4The relative frequency of occurrence of the two classes is shown to determine the relative power of their members. * 5We consider the theoretical properties of bargaining processes by which relative power is converted into corresponding pay-off distributions. * 6We propose coalition games, a class of games with more than two players and in which bargaining is possible, as suitable paradigms for collaboration among members of social units.
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Publisher Blackwell Publishing Ltd Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1439-0310 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5413
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Author Wolff, A.; Hausberger, M.
Title Behaviour of foals before weaning may have some genetic basis Type Journal Article
Year (up) 1994 Publication Ethology Abbreviated Journal Ethology
Volume 96 Issue 1 Pages 1-10
Keywords Locomotion; Suckling; Social behavior; Foraging behavior; Exploratory behavior; Interindividual comparison; Young animal; Genetic inheritance; Captivity; Social interaction; Feeding behavior; Perissodactyla; Ungulata; Mammalia; Vertebrata
Abstract In this preliminary study on foal behaviour, 13 French saddlebred foals (2-3 mo old) and their dams were observed on pasture. The most important findings are the interindividual quantitative differences in foal behaviour patterns as well as in the amount of mainly foal-initiated time spent at given distances from their mares. Interindividual differences seem in part due to a sire effect
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Call Number Equine Behaviour @ team @ Serial 5022
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Author Dunbar, R. I. M.; Bever, J.
Title Neocortex size predicts group size in carnivores and some insectivores Type Journal Article
Year (up) 1998 Publication Ethology Abbreviated Journal Ethology
Volume 108 Issue 8 Pages 695-708
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Abstract Neocortex size has been shown to correlate with group size in primates. Data for carnivores and insectivores are used to test the generality of this relationship. The data suggest that carnivores lie on the same grade as the primates, but that insectivores lie on a separate grade to the left of these two orders. Among the insectivores, there appears to be a distinction between the 'advanced' genera (which show a relationship between group size and neocortex size) and the 'basal' genera (which do not).
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Call Number Equine Behaviour @ team @ Serial 4734
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Author Rendall, D.
Title Review of Machiavellian Intelligence II: Extensions and Evaluations Type Journal Article
Year (up) 1999 Publication Ethology Abbreviated Journal Ethology
Volume 105 Issue 2 Pages 178-182
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Call Number Equine Behaviour @ team @ Serial 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? Type Journal Article
Year (up) 1999 Publication Ethology Abbreviated Journal Ethology
Volume 105 Issue 9 Pages 737-746
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Abstract 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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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4271
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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 (up) 2001 Publication Ethology Abbreviated Journal Ethology
Volume 107 Issue 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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Call Number Equine Behaviour @ team @ Serial 2184
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Author Hampton, R.R.
Title Animal Minds: Beyond Cognition to Consciousness Type Journal Article
Year (up) 2001 Publication Ethology Abbreviated Journal Ethology
Volume 107 Issue Pages 1055-1056
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Call Number refbase @ user @ Serial 3487
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