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Author |
Powell, D. |
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Title |
Female–female competition or male mate choice? Patterns of courtship and breeding behavior among feral horses (Equus caballus) on Assateague Island |
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Journal Article |
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Year |
2008 |
Publication |
Journal of Ethology |
Abbreviated Journal  |
J. Ethol. |
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Volume |
26 |
Issue |
1 |
Pages |
137-144-144 |
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Keywords |
Biomedical and Life Sciences |
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Abstract |
Previous research on the Assateague horses found that high-ranking females had more surviving offspring than low-ranking females. Variance in reproductive success may be the result of a variety of proximate processes that affect sexual behavior such as mate choice and mate competition. A study was done to determine whether patterns of courtship, social, and sexual behavior could be identified that would suggest mate choice and/or mate competition. Behavioral data were collected from approximately 40 sexually mature mares living in harem bands. Stallions showed more interest in the eliminations of dominant mares than subordinate mares. Males also engaged in significantly more high-intensity (e.g., mounts and copulations) sexual behavior with dominant mares than subordinate mares, and there was a trend for males to engage in more low-intensity (e.g., flehmen and ano-genital sniffing) sexual behavior with dominant mares than subordinate mares. There was no effect of mare rank on spatial relationships with the stallion; however, dominant mares did attempt to restrict reproductive access to the stallion by harassing and disrupting copulations. Higher foaling rates among dominant mares on Assateague Island could therefore be the result of rank-related mate choice by stallions and direct female competition for mating opportunities. |
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Springer Japan |
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0289-0771 |
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Call Number |
Equine Behaviour @ team @ |
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5412 |
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Author |
Baragli, P.; Vitale, V.; Paoletti, E.; Sighieri, C.; Reddon, A.R. |
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Title |
Detour behaviour in horses (Equus caballus) |
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Journal Article |
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Year |
2011 |
Publication |
Journal of Ethology |
Abbreviated Journal |
J. Ethol. |
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29 |
Issue |
2 |
Pages |
227-234 |
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Keywords |
Detour behaviour; Equus caballus; Horses; Lateralization; Spatial reasoning |
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Abstract |
The objective of this study was to investigate the ability of horses (Equus caballus) to detour around symmetric and asymmetric obstacles. Ten female Italian saddle horses were each used in three detour tasks. In the first task, the ability to detour around a symmetrical obstacle was evaluated; in the second and third tasks subjects were required to perform a detour around an asymmetrical obstacle with two different degrees of asymmetry. The direction chosen to move around the obstacle and time required to make the detour were recorded. The results suggest that horses have the spatial abilities required to perform detour tasks with both symmetric and asymmetric obstacles. The strategy used to perform the task varied between subjects. For five horses, lateralized behaviour was observed when detouring the obstacle; this was consistently in one direction (three on the left and two on the right). For these horses, no evidence of spatial learning or reasoning was found. The other five horses did not solve this task in a lateralized manner, and a trend towards decreasing lateralization was observed as asymmetry, and hence task difficulty, increased. These non-lateralized horses may have higher spatial reasoning abilities. |
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Springer Japan |
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English |
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0289-0771 |
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Call Number |
Equine Behaviour @ team @ |
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5686 |
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Author |
Wolter, R.; Krueger, K. |
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Title |
Einflussfaktoren auf das Grooming-Verhalten bei wilden und verwilderten Pferden [Influencing factors on grooming behaviour in wild living horses] |
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Book Chapter |
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Year |
2015 |
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Current research in applied ethology [Aktuelle Arbeiten zur artgemäßen Tierhaltung] KTBL Schrift 510 |
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KTBL Schrift 510 |
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Die soziale Fellpflege wurde bei Equiden intensiv erforscht. Es stellte sich heraus, dass diverse Faktoren das Grooming-Verhalten beeinflussen können. Neben saisonalen Gegebenheiten sind dies vor allem soziale Faktoren, wie das Alter und Geschlecht der Tiere, die Hierarchie und Gruppenzusammensetzung sowie die Verwandtschaftsverhältnisse der Tiere untereinander. Diese Faktoren können sowohl bei der Häufigkeit der sozialen Fellpflege, als auch bei der Wahl des Partners eine entscheidende Rolle spielen. Zudem konnte gezeigt werden, dass auch das Aggressivitätslevel in einer Gruppe Einfluss auf das soziale Verhalten und die soziale Fellpflege nehmen kann. Inwiefern zwei Individuen, die sich häufig groomen, auch bevorzugt beieinander stehen, konnte bislang noch nicht eindeutig gezeigt werden, da es hierzu diverse Studien mit konträren Ergebnisse gibt. Dieser Aspekt sollte zukünftig dringend untersucht werden, da die beiden Datensätze häufig gemeinsam verwendet werden, um soziale Bindungen zu berechnen, ohne dass bislang ein eindeutiger Zusammenhang zwischen ihnen ermittelt werden konnte.
[Summary
Social grooming has been investigated intensively in Equids during the last years and several factors are known to influence the grooming behaviour. Beside seasonal conditions these are especially social factors as age and sex, hierarchy and group composition as well as kinship. These factors can affect the grooming frequencies and influence the choice of the grooming partner. Moreover, it could be demonstrated that the groups’
aggression level can influence the social behaviour and the grooming intensity. If individuals which show an increased grooming frequency often stand in close proximity as well, has not been affirmed, as, so far, no distinct correlation has been demonstrated. This aspect has to be investigated urgently, as both data sets are often used in combination for calculating social bonds.] |
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KTBL-Schrift 510 |
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Darmstadt |
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978-3-945088-13-5 |
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Equine Behaviour @ team @ |
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5928 |
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Author |
Rubenstein D. I., |
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Title |
Reproductive value and behavioral strategies: coming of age in monkeys and horses |
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Journal Article |
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Year |
1982 |
Publication |
Perspectives in Ethology |
Abbreviated Journal |
Perspect Ethol |
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5 |
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Pages |
469-487 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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1525 |
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