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| Author |
Powell, G.V.N. |
| Title |
Experimental analysis of the social value of flocking by starlings (Sturnus vulgaris) in relation to predation and foraging |
Type |
Journal Article |
| Year |
1974 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
22 |
Issue |
2 |
Pages |
501-505 |
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| Abstract |
In groups of ten, indidual starlings, Sturnus vulgaris, spent significantly less time in surveillance than did individuals in smaller groups and responded more quickly than single birds to a flying model hawk. Captive starlings in flocks reduce their individual surveillance efforts, but their combined efforts still enable them to be more effective than single birds in the detection of predators. Foraging behaviour of flocks was observed by placing single starlings with groups of tricoloured blackbirds, Agelaius tricolor; the starlings reduced the time they devoted to surveillance at the same rate as if they were with other starlings. |
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2147 |
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| Author |
Bonabeau, E.; Theraulaz, G.; Deneubourg, J-L. |
| Title |
Dominance orders in animal societies: the selforganization |
Type |
Journal Article |
| Year |
1999 |
Publication |
Bulletin of Mathematical Biology |
Abbreviated Journal |
Bull Math Biol |
| Volume |
61 |
Issue |
4 |
Pages |
727-757 |
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In previous papers (Theraulaz et al. 1995, Bonabeau et al. 1996) we suggested, following Hogeweg and Hesper (1983, 1985), that the formation of dominance orders in animal societies could result from a selforganizing process involving a double reinforcement mechanism: winners reinforce their probability of winning and losers reinforce their probability of losing. This assumption, and subsequent models, were based on empirical data on primitively eusocial wasps (Polistes dominulus). By... |
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Equine Behaviour @ team @ |
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2172 |
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| Author |
Heyes, C.; Galef, B.G. (eds) |
| Title |
Social learning in animals: the roots of culture |
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Book Whole |
| Year |
1996 |
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Academic Press, Inc. |
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San Diego, CA |
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Heyes, C. ; Galef, B.G. |
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978-0122739651 |
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Equine Behaviour @ team @ home |
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2174 |
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Dugatkin, L.A.; Godin, G.J. |
| Title |
Predator inspection, shoaling and foraging under predation hazard in the Trinidadian guppy,Poecilia reticulata |
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Journal Article |
| Year |
1992 |
Publication |
Environmental Biology of Fishes |
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34 |
Issue |
3 |
Pages |
265-276 |
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Antipredation – Social group – Feeding – Predation risk – Trade-off – Fish |
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Guppies,Poecilia reticulata, living in stream pools in Trinidad, West Indies, approached a potential fish predator (a cichlid fish model) in a tentative, saltatory manner, mainly as singletons or in pairs. Such behavior is referred to as predator inspection behavior. Inspectors approached the trunk and tail of the predator model more frequently, more closely and in larger groups than they approached the predator's head, which is presumably the most dangerous area around the predator. However, guppies were not observed in significantly larger shoals in the stream when the predator model was present. In a stream enclosure, guppies inspected the predator model more frequently when it was stationary compared to when it was moving, and made closer inspections to the posterior regions of the predator than to its head. Therefore, the guppies apparently regarded the predator model as a potential threat and modified their behavior accordingly when inspecting it. Guppies exhibited a lower feeding rate in the presence of the predator, suggesting a trade-off between foraging gains and safety against predation. Our results further suggest that predator inspection behavior may account for some of this reduction in foraging. These findings are discussed in the context of the benefits and costs of predator inspection behavior. |
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Equine Behaviour @ team @ |
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2176 |
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| Author |
Dugatkin, L.A.; Godin, J.-G.J. |
| Title |
Female mate copying in the guppy (Poecilia reticulata): age-dependent effects |
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Journal Article |
| Year |
1993 |
Publication |
Behavioral Ecology |
Abbreviated Journal |
Behav. Ecol. |
| Volume |
4 |
Issue |
4 |
Pages |
289-292 |
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mate choice, copying, guppy, Poecilia reticulata |
| Abstract |
Virtually all studies of mate choice to date have assumed that females choose mates independent of one another. Social cues, however, such as the mate choice of conspecifics, may also play an important role in such decisions. Previous work has shown that female guppies of similar age copy each other's choice of mates. Here we examine the effect of relative age on mate choice copying in the guppy, Poecilia reticulata, and examine whether younger individuals are more likely to copy the mate choice of older conspecifics than vice versa. Results indicate that younger females copy the mate choice of older females, but older individuals do not appear to be influenced by the mate choice of younger individuals. |
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Equine Behaviour @ team @ |
Serial |
2181 |
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Syme, G.J.; Pollard, J.S.; Syme, L.A.; Reid, R.M. |
| Title |
An analysis of the limited access measure of social dominance in rats |
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Journal Article |
| Year |
1974 |
Publication |
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22 |
Issue |
2 |
Pages |
486-500 |
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The limited access situation in which only one of two or more subjects can gain access to a reward during a restricted time-period is an accepted measure of dominance in the rat. This study attempts to validate the technique by establishing the relationship between individual and competitive performance in order to determine whether `priority of access' has been measured. The generality of the competitive orders is examined by altering the competitive response while retaining the same reward. In view of the data collected for both time and weight-gain measures in food and water competition it is doubtful whether the limited access competitive technique can be considered a valid measure of dominance for the laboratory rat. |
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no |
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Equine Behaviour @ team @ |
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2187 |
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| Author |
Syme, G.J. |
| Title |
Competitive orders as measures of social dominance |
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Journal Article |
| Year |
1974 |
Publication |
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22 |
Issue |
Part 4 |
Pages |
931-940 |
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The use of competitive orders as measures of social dominance is examined, the conclusion being that such use is based on the assumption of the unidimensionality of social dominance. Evidence is presented to show that this is not always the case. Consequently it is suggested that each competitive order must be validated in terms of its measurement of priority of access and response requirements (internal validity) as well as its generality (external validity) before it can be regarded as a dominance measure. Problems of the validity of aggression orders as measures of social dominance are also examined along with their relationship to competitive orders. |
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Equine Behaviour @ team @ |
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2188 |
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Anderson, G.D.; Talbot, L.M. |
| Title |
Soil factors affecting distribution of the grassland types and their utilization by wild animals on the Serengeti Plains |
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Journal Article |
| Year |
1965 |
Publication |
Journal of Ecology |
Abbreviated Journal |
J Ecol |
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53 |
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1 |
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Equine Behaviour @ team @ |
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2216 |
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Anderson, G.D.; Herlocker,D.J. |
| Title |
Soil factors affecting the distribution of the vegetation types and their utilization by wild animals in Ngorongoro Crater, Tanzania. |
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Journal Article |
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1973 |
Publication |
Journal of Ecology |
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J Ecol |
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61 |
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627-651 |
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Equine Behaviour @ team @ |
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2217 |
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| Author |
Bannikov, A.G. |
| Title |
Recent status of the wild ass in Mongolia |
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Journal Article |
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1975 |
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IUCN Bulletin |
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6 |
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4 |
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16 |
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Equine Behaviour @ team @ |
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2219 |
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