| Records |
Author  |
Kasuya,Eiiti |
| Title |
A randomization test for linearity of dominance hierarchies |
Type |
Journal Article |
| Year |
1995 |
Publication |
Journal of Ethology |
Abbreviated Journal |
J. Ethol. |
| Volume |
13 |
Issue |
1 |
Pages |
137-140 |
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Equine Behaviour @ team @ |
Serial |
4288 |
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| Author |
Humphrey, N. K. |
| Title |
The social function of intellect. |
Type |
Book Chapter |
| Year |
1976 |
Publication |
Growing Points in Ethology |
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Pages |
303-317 |
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Cambridge University Press |
Place of Publication |
Cambridge |
Editor |
Bateson, P. P. G.; Hinde, R. A. |
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Equine Behaviour @ team @ |
Serial |
5459 |
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| Author |
Huang, S.-P.; Yang, S.-Y.; Hsu, Y. |
| Title |
Persistence of Winner and Loser Effects Depends on the Behaviour Measured |
Type |
Journal Article |
| Year |
2011 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
117 |
Issue |
2 |
Pages |
171-180 |
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| Abstract |
Abstract Recent contest experience can influence an individual’s behaviour in subsequent contests. When the probability of winning a subsequent contest is used to quantify experience effects, a loser effect usually lasts longer than a winner effect. This conclusion, however, may be caused by this probability understating the persistence of the influence of a winning experience on contest decisions. Using Kryptolebias marmoratus, a mangrove killifish, as the study organism, we investigated whether different conclusions about the relative persistence of winning and losing experiences would be reached when different aspects of contest behaviour (probability of initiating attacks, probability of winning non-escalated and escalated contests, escalation rate and contest duration) were measured. The results indicated that the apparent persistence of the effect of winning or losing experiences varied with the behaviour studied. When the likelihood to initiate attacks was used, no winner effect was detected while the loser effect lasted for <1 d. When escalation rate was used, the winner effect lasted for 2–4 d, while the loser effect lasted for 1–2 d. When the probability of winning non-escalated contests was used, the winner effect was detectable for <1 d, while the loser effect lasted for 2–4 d. And, when contest duration was used, the winner effect was detectable for 2–4 d, but no loser effect was detectable. These results show that (1) the probability of winning a subsequent contest understated the persistence of the influence of a winning experience on the fish’s contest decisions, (2) the measures most effective at detecting winner effects are different from those most effective at detecting loser effects and (3) in K. marmoratus, both effects can be detected 2 d after the completion of experience training but both dissipate in 4 d. |
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Blackwell Publishing Ltd |
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1439-0310 |
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Equine Behaviour @ team @ |
Serial |
5317 |
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| Author |
Houpt, K.A.; Law, K.; Martinisi, V. |
| Title |
Dominance hierarchies in domestic horses |
Type |
Journal Article |
| Year |
1978 |
Publication |
Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
| Volume |
4 |
Issue |
3 |
Pages |
273-283 |
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| Abstract |
Dominance hierarchies were studied in 11 herds of domestic horses and ponies (Equus caballus). A paired feeding test was utilized to establish the dominance--subordination relationship between each pair of animals in a herd. Aggressive actions, threats, bites, kicks and chases were also recorded. In small herds linear hierarchies were formed, but in large herds triangular relationships were observed. Aggression was correlated with dominance rank. Body weight, but not age, appear to affect rank in the equine hierarchy. Juvenile horses were more likely to share feed with each other than were adult horses and were usually subordinate to adult horses. The daughters of a dominant mare were dominant within their own herds. |
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refbase @ user @ |
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682 |
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| Author |
Houpt, K.A. |
| Title |
Review of some research areas of applied and theoretical interest in domestic animal behavior |
Type |
Journal Article |
| Year |
1980 |
Publication |
Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
| Volume |
6 |
Issue |
2 |
Pages |
111-119 |
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| Abstract |
There are numerous areas worthy of study in the field of domestic animal behavior or applied ethology. In this paper a few areas are offerred as particularly worthy of attention. These areas are worthwhile either because they have received little or no study and are of basic interest or because they have application to current problems of livestock production. The study of cat behavior falls in the former category. Neither the food and water sources, the reproductive success rate nor even the social interactions of cats in the large populations found in both rural and urban environments are known. Pigs as a species have already been the subjects of many behavior studies; nevertheless, there are still gaps in our knowledge of the underlying principles of swine behavior. The physiological basis of maternal behavior, for example, has not been studied in swine or in any domestic species. The sensory basis of udder location by the neonatal piglet deserves study also. Some aspects of olfactory and vocal communication of pigs have been studied, but only one of what may be a large number of pheromones of pigs has been chemically identified. The message conveyed by the vocal interactions between adult swine of the same sex is unknown, as is the role of facial and postural expressions in porcine communication. The two major problems of pig behavior under conditions of intensive livestock management are tail biting and reproductive failure. The application of behavioral techniques to these problems might help to attenuate those problems as well as broaden our understanding of normal pig behavior. Horse behavior has also been a relatively neglected field of study. Of particular interest is the significance of the flehmen gesture used by both mares and stallions in a variety of situations. Flehmen may be related to the function of the vomeronasal organ, but both observational and physiological studies should be performed to verify the hypothesis. |
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refbase @ user @ |
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508 |
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Hinz, K.; Sennet, S.; Maros, K.; Krueger, K. |
| Title |
Waiting behaviour in front of a computerized feeding system in an active stable – Effects on heart rate, heart rate variability and sensory laterality in horses |
Type |
Book Chapter |
| Year |
2015 |
Publication |
Current research in applied ethology [Aktuelle Arbeiten zur artgemäßen Tierhaltung |
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computerized feeding, waiting situation, stress, horse |
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KTBL-Schrift 510 |
Place of Publication |
Darmstadt |
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978-3-945088-13-5 |
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no |
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Equine Behaviour @ team @ |
Serial |
5927 |
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| Author |
Hemelrijk, C.K.; Hildenbrandt, H. |
| Title |
Self-Organized Shape and Frontal Density of Fish Schools |
Type |
Journal Article |
| Year |
2008 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
114 |
Issue |
3 |
Pages |
245-254 |
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Abstract Models of swarming (based on avoidance, alignment and attraction) produce patterns of behaviour also seen in schools of fish. However, the significance of such similarities has been questioned, because some model assumptions are unrealistic [e.g. speed in most models is constant with random error, the perception is global and the size of the schools that have been studied is small (up to 128 individuals)]. This criticism also applies to our former model, in which we demonstrated the emergence of two patterns of spatial organization, i.e. oblong school form and high frontal density, which are supposed to function as protection against predators. In our new model we respond to this criticism by making the following improvements: individuals have a preferred ‘cruise speed’ from which they can deviate in order to avoid others or to catch up with them. Their range of perception is inversely related to density, with which we take into account that high density limits the perception of others that are further away. Swarm sizes range from 10 to 2000 individuals. The model is three-dimensional. Further, we show that the two spatial patterns (oblong shape and high frontal density) emerge by self-organization as a side-effect of coordination at two speeds (of two or four body lengths per second) for schools of sizes above 20. Our analysis of the model leads to the development of a new set of hypotheses. If empirical data confirm these hypotheses, then in a school of real fish these patterns may arise as a side-effect of their coordination in the same way as in the model. |
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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 |
5202 |
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| Author |
Hemelrijk, C.K. |
| Title |
Understanding Social Behaviour with the Help of Complexity Science (Invited Article) |
Type |
Journal Article |
| Year |
2002 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
108 |
Issue |
8 |
Pages |
655-671 |
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Abstract In the study of complexity, a new kind of explanation has been developed for social behaviour. It shows how patterns of social behaviour can arise as a side-effect of the interaction of individuals with their social or physical environment (e.g. by self-organization). This development may influence our ideas about the direct causation and evolution of social behaviour. Furthermore, it may influence our theories about the integration of different traits. This new method has been made possible by the increase in computing power. It is now applied in many areas of science, such as physics, chemistry, sociology and economics. However, in zoology and anthropology it is still rare. The major aim of this paper is to make this method more generally accepted among behavioural scientists. |
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Blackwell Verlag, GmbH |
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1439-0310 |
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no |
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Equine Behaviour @ team @ |
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5200 |
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| Author |
Heitor, F.; Vicente, L. |
| Title |
Dominance relationships and patterns of aggression in a bachelor group of Sorraia horses (Equus caballus) |
Type |
Journal Article |
| Year |
2010 |
Publication |
Journal of Ethology |
Abbreviated Journal |
J. Ethol. |
| Volume |
28 |
Issue |
1 |
Pages |
35-44 |
| Keywords |
Horse – Equus – Dominance relationship – Rank – Agonistic interaction |
| Abstract |
Abstract The influence of individual factors on dominance rank and the relationship between rank distance and patterns of aggression predicted by models of evolutionarily stable strategies (ESS) of animal conflict were investigated in a managed bachelor group of Sorraia horses, Equus caballus. The group was composed of four to six stallions 3- to 12-years-old during the study period. The dominance hierarchy was significantly linear and rank was not related to age, weight, height or aggressiveness. Frequency and intensity of agonistic interactions were low, but higher-ranking stallions did not receive lower aggressiveness than lower-ranking stallions. There was some evidence that dominance relationships were more contested among close-ranking stallions, as predicted. Agonistic-related interactions among close-ranking stallions served similar functions to those among distant-ranking stallions, but the latter interacted more frequently than expected for access to resting sites and/or resting partners. Therefore, we found some evidence that agonistic-related interactions among distant-ranking stallions play a larger role in providing access to valuable and defendable resources than those among close-ranking stallions. Nevertheless, the fact that space to escape from aggression was limited and breeding access was independent from dominance rank may have reduced the benefits relative to costs of aggression and therefore limited the occurrence of contests over dominance and resources. |
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Equine Behaviour @ team @ |
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5099 |
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| Author |
Heitor, F.; Vicente, L. |
| Title |
Affiliative relationships among Sorraia mares: influence of age, dominance, kinship and reproductive state |
Type |
Journal Article |
| Year |
2010 |
Publication |
Journal of Ethology |
Abbreviated Journal |
J. Ethol. |
| Volume |
28 |
Issue |
1 |
Pages |
133-140 |
| Keywords |
Sorraia horse – Affiliative relationship – Dominance – Kinship – Reproductive state |
| Abstract |
Abstract Affiliative relationships among mares were examined in a managed group of Sorraia horses, Equus caballus, over a 3-year period. We assessed the influence of age, dominance, kinship and reproductive state on the strength of affiliative relationships and diversity of partners. The herd comprised 9–11 mares that had known each other since birth, their foals and a stallion that remained in the group exclusively during the breeding season. In contrast to a previous study, kinship did not significantly affect bonds. Mares tended to spend more time in proximity to those in the same reproductive state. Affiliative relationships among mares were relatively stable but their strength decreased after foaling, possibly as a function of foal protection and bonding between dam and foal. There was no consistent evidence that mares disengaged from affiliative relationships with increasing age. As expected, dominant mares and barren mares contributed the most to affiliative relationships. Dominance rank increased with age, but dominance relationships were stable and did not change after foaling. Overall, reproductive state was the factor that had the most consistent influence on affiliative relationships among Sorraia mares. |
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Equine Behaviour @ team @ |
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5100 |
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