| Records |
Author  |
Heitkamp, H.C.; Horstmann, T.; Hillgeris, D. |
| Title |
[Riding injuries and injuries due to handling horses in experienced riders] |
Type |
Journal Article |
| Year |
1998 |
Publication |
Der Unfallchirurg |
Abbreviated Journal |
Unfallchirurg |
| Volume |
101 |
Issue |
2 |
Pages |
122-128 |
| Keywords |
Adult; Animals; Athletic Injuries/*epidemiology/etiology/surgery; Cross-Sectional Studies; Female; Fractures, Bone/epidemiology/etiology/surgery; Germany/epidemiology; *Horses; Humans; Incidence; Male; Multiple Trauma/epidemiology/etiology/surgery; Risk Factors |
| Abstract |
A group of experienced riders who qualified for the German riding badge 9.5 years ago answered a questionnaire pertaining to injuries during jumping, dressage and cross-country riding, as well as handling the horse. During riding 69% of the persons had had 187 injuries and while handling the horse 52% had had 124 injuries. Fractures and contusions were the most-frequent injuries; most riding injuries were located in the upper extremities and shoulder while handling mainly in the hands and feet. The number of injuries was comparable in jumping, dressage or cross-country riding. The time engaged in jumping was about one-third of the other types of riding, but the injuries were more severe. While handling the horse the number of injuries relative to the time spent during the activity were higher but less complicated. No change in safety precautions had been implemented by 67% of the persons injured. The injury rate for equestrians is relatively low both in handling the horse and during riding. The frequent fractures and contusions may be reduced by following the required safety regulations. |
| Address |
Abteilung Sportmedizin, Universitat Tubingen |
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Place of Publication |
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| Language |
German |
Summary Language |
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Original Title |
Reitverletzungen und Verletzungen beim Umgang mit Pferden bei erfahrenen Reitern |
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Edition |
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| ISSN |
0177-5537 |
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| Notes |
PMID:9553480 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3735 |
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| Author |
Henzi, S.P.; Lycett, J.E.; Weingrill, T. |
| Title |
Mate guarding and risk assessment by male mountain baboons during inter-troop encounters |
Type |
Journal Article |
| Year |
1998 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
55 |
Issue |
6 |
Pages |
1421-1428 |
| Keywords |
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| Abstract |
Aggressive herding of females is a frequent but not invariant response by male savannah baboons,Papio cynocephalus, to encounters with other troops. While males in some troops are consistently more likely to herd than those in others, not all inter-troop encounters result in herding, even within particular troops. This suggests that males assess the risk of male invasion posed by each encounter and respond accordingly. We used data from baboon troops in the Drakensberg mountains to determine the rules males follow in deciding whether to herd. Consistent differences between troops were explained only by the adult sex ratio. Males were more likely to herd if the sex ratio of their own troop was female biased, a finding that is concordant with the observation that males are more likely to immigrate into troops where the sex ratio is more female biased than the population average. Differences within troops were a consequence only of encounter distance, with herding being more likely at closer distances. We found a negative correlation between the angle of approach to the other troop and the subsequent angle of deflection. We interpret this to mean that herding functions to increase the distance between the interacting troops, thereby curtailing opportunities for strange males to inspect the troop and determine its sex ratio. In this way, possibly unlike those in other populations, the decision rules of these male baboons are geared to protecting longer-term reproductive prospects. |
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| ISSN |
0003-3472 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5311 |
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| Author |
Honeyman, M.S.; Miller, G.S. |
| Title |
The effect of teaching approaches on achievement and satisfaction of field-dependent and field-independent learners in animal science |
Type |
Journal Article |
| Year |
1998 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
76 |
Issue |
6 |
Pages |
1710-1715 |
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no |
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Equine Behaviour @ team @ |
Serial |
2941 |
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| Author |
Hoover, T.S.; Marshall, T.T. |
| Title |
A comparison of learning styles and demographic characteristics of students enrolled in selected animal science courses |
Type |
Journal Article |
| Year |
1998 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
76 |
Issue |
12 |
Pages |
3169-3173 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2939 |
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| Author |
Hopkins, W.D.; Parr, L.A. |
| Title |
Lateralized behavior and lymphocyte counts in chimpanzees (pan troglodytes): A cross-sectional and longitudinal assessment |
Type |
Journal Article |
| Year |
1998 |
Publication |
Developmental Neuropsychology |
Abbreviated Journal |
Developmental Neuropsychology |
| Volume |
14 |
Issue |
4 |
Pages |
519-533 |
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| Abstract |
Cross?sectional and longitudinal assessment of lymphocyte count and behavioral laterality was examined in a sample of captive chimpanzees (Pan troglodytes) to assess the validity of the Geschwind?Behan?Galaburda (GBG) theory of cerebral lateralization. For the cross?sectional analysis, chimpanzees classified as right?handed for feeding exhibited lower lymphocyte counts than chimpanzees classified as either ambiguously handed or left?handed. Longitudinal analysis indicated that some measures of laterality within the first 3 months of life predicted (a) direction of hand preference at 2 to 5 years of age and (b) lymphocyte counts for the first 3 years of life. The association between lymphocyte count and behavioral laterality was more evident in males than females. Taken together, the results support some aspects of the GBG theory. |
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Routledge |
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8756-5641 |
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| Notes |
doi: 10.1080/87565649809540726 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5780 |
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| Author |
Johnsson, J.I.; Akerman, A. |
| Title |
Watch and learn: preview of the fighting ability of opponents alters contest behaviour in rainbow trout |
Type |
Journal Article |
| Year |
1998 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
56 |
Issue |
3 |
Pages |
771-776 |
| Keywords |
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| Abstract |
The costs associated with initial conflicts could be reduced if animals can assess the fighting ability of possible future opponents by watching their contest success against other individuals. We tested this hypothesis by conducting repeated dyadic dominance trials on size-matched juvenile rainbow trout,Oncorhynchus mykiss. In the first trial a dyadic contest was `observed' by a single fish separated by a transparent divider. In the second trial, the observer was paired against either the `familiar' dominant fish or an unfamiliar dominant fish from the first trial. We predicted that observers should settle conflicts with previewed opponents faster and with less aggression than those with unfamiliar fish. This prediction was supported for observers that lost against a previewed competitor, since these fish reduced their aggression more rapidly than did unfamiliar observers. Familiar observers that won, however, showed a more rapid increase in aggression compared with unfamiliar winning observers. This suggests that, regardless of whether an observer challenges the initial dominant, this `decision' is taken more rapidly in conflicts with preassessed contestants, because of the a priori information about their fighting ability. Since preassessment could save energy and allow effort to be concentrated on contests with a high payoff/probability of winning, selection may favour preview strategies when contest competition over resources is important for fitness. |
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no |
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Equine Behaviour @ team @ |
Serial |
2869 |
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| Author |
Jolly, A. |
| Title |
Pair-bonding, female aggression and the evolution of lemur societies |
Type |
Journal Article |
| Year |
1998 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
| Volume |
69 Suppl 1 |
Issue |
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Pages |
1-13 |
| Keywords |
*Aggression; Animals; Evolution; Female; Intelligence; Lemur/*psychology; Male; *Pair Bond; Sex Factors; Social Dominance; Strepsirhini/psychology |
| Abstract |
Lemur societies have been described as convergent with those of anthropoids, including Papio-like female-bonded multi-male groups. Recent research, however, shows at least 5 pair-bonded species among the Lemuridae and Indriidae. Three more, Eulemur mongoz, Eulemur fulvus and Varecia variegata, have societies combining aspects of pairing with aspects of troop life. The best-known female-bonded societies, those of Lemur catta, Propithecus diadema edwardsi and Propithecus verreauxi, may be assemblages of mother-daughter dyads, capable of high aggression towards other females, but derived from more solitary female ancestors, perhaps also living as pairs. The internal structure of such lemur groups differs from the more extensive kin groups of catarrhines. This in turn may relate to the lemurs' level of social intelligence and to lemur female dominance over males. |
| Address |
Department of Ecology and Evolutionary Biology, Princeton University, N.J. 08544, USA. ajolly@princeton.edu |
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| Language |
English |
Summary Language |
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Original Title |
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Series Issue |
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Edition |
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| ISSN |
0015-5713 |
ISBN |
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Medium |
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| Notes |
PMID:9595685 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4179 |
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| Author |
Kamil, A.C. |
| Title |
On the Proper Definition of Cognitive Ethology |
Type |
Book Chapter |
| Year |
1998 |
Publication |
Animal Cognition in Nature |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
1-28 |
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| Abstract |
Summary The last 20-30 years have seen two `scientific revolutions' in the study of animal behavior: the cognitive revolution that originated in psychology, and the Darwinian, behavioral ecology revolution that originated in biology. Among psychologists, the cognitive revolution has had enormous impact. Similarly, among biologists, the Darwinian revolution has had enormous impact. The major theme of this chapter is that these two scientific research programs need to be combined into a single approach, simultaneously cognitive and Darwinian, and that this single approach is most appropriately called cognitive ethology. |
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Academic Press |
Place of Publication |
London |
Editor |
Russell P. Balda; Irene M. Pepperberg; Alan C. Kamil |
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Original Title |
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Edition |
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ISBN |
9780120770304 |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4202 |
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| Author |
Karavanich, C.; Atema, J. |
| Title |
Individual recognition and memory in lobster dominance |
Type |
Journal Article |
| Year |
1998 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
56 |
Issue |
6 |
Pages |
1553-1560 |
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| Abstract |
American lobsters,Homarus americanus, form stable dominance relationships in captivity. Size, sex and stage in the moult cycle are important determinants for dominance. Other factors, such as recent agonistic experience play a role. This paper investigates how lobsters maintain their stable dominance relationships: they may recognize individuals or alternatively, recognize overall dominance status. We paired lobsters in two consecutive `boxing matches'. Results indicate that lobsters remember familiar opponents when kept either in isolation or in communal tanks for 24 h between their first and second fights. Subordinates immediately backed away from familiar dominants, avoiding a second fight. In some animals, this memory lasted between 1-2 weeks if pairs were kept separate between the first and second fights. When paired for the second fight against unfamiliar dominant lobsters, subordinate lobsters from first fights actively fought and won the encounter. These results suggest that lobsters are capable of `individual recognition'. In nature, the observed social organization of lobsters may be maintained by individual recognition of a small number of residents inhabiting separate, nearby shelters. |
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no |
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refbase @ user @ |
Serial |
866 |
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| Author |
Keil, N.M., Sambraus, H.H. |
| Title |
“Intervenors” in agonistic interactions amongst domesticated goats |
Type |
Journal Article |
| Year |
1998 |
Publication |
Zeitschrift fur Säugetierkunde |
Abbreviated Journal |
Z. Säugetierk. |
| Volume |
63 |
Issue |
5 |
Pages |
266-272 |
| Keywords |
Behaviour; Domestication; Goat; Intervention; Rank order |
| Abstract |
Social behaviour was observed in individually marked goats in two herds. The goats from one herd (n = 98) were horned, those of the other herd (n = 83) were polled. By recording agonistic interactions within the herds, a dominance index was determined for each animal. In both herds, intervention took place. Intervention is defined as one animal pushing in between two fighters, and thus ending the fight. More cases of intervention took place per individual animal amongst the horned goats than amongst the polled ones. Goats which intervened in fights on several occasions usually had a high dominance index. Members of the herd which were observed intervening only once had an average dominance index in both herds of almost 0.5. In some cases, goats very low in the rank order intervened a fight. Only rarely did the intervenors have a lower dominance index than the two fighters. In 103 cases, the direct dominance relationship between a fighting animal and the intervenor was known. In 95 cases (92.2%), the intervenor was dominant to the herd member in this fight and in just eight cases (7.8%), it was subordinate. It could not be determined what advantage the intervenor gained from its activity. It is possible that, at least in certain cases, a particularly relationship existed between the intervenor and one of the fighters. |
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Equine Behaviour @ team @ |
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5236 |
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