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Author | Rutberg, A.T. | ||||
Title | Horse Fly Harassment and the Social Behavior of Feral Ponies | Type | Journal Article | ||
Year | 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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Series Volume | Series Issue | Edition | |||
ISSN | 0179-1613 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | doi: 10.1111/j.1439-0310.1987.tb00648.x | Approved | no | ||
Call Number | Equine Behaviour @ team @ | Serial | 6417 | ||
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Author | Baragli, P.; Paoletti, E.; Vitale, V.; Sighieri, C. | ||||
Title | Looking in the correct location for a hidden object: brief note about the memory of donkeys (Equus asinus) | Type | Journal Article | ||
Year | 2011 | Publication | Ethology Ecology & Evolution | Abbreviated Journal | Ethology Ecology & Evolution |
Volume | 23 | Issue | 2 | Pages | 187-192 |
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Abstract | In recent years, considerable literature has been published on cognition in horses; however, much less is known about the cognitive abilities of domestic donkey (Equus asinus). This study aimed to expand our knowledge of donkey cognition by assessing their short-term memory capacity. We employed a detour problem combined with the classic delayed-response task, which has been extensively used to compare working memory duration in a variety of different species. A two-point choice apparatus was used to investigate location recall and search behaviour for a food target, after a short delay following its disappearance. Four donkeys completed the task with a 10 sec delay, while four others were tested with a 30 sec delay. Overall, each group performed above chance level on the test, showing that subjects had successfully encoded, maintained, and retrieved the existence and location of the target despite the loss of visual contact. | ||||
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Publisher | Taylor & Francis | Place of Publication | Editor | ||
Language | Summary Language | Original Title | |||
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Series Volume | Series Issue | Edition | |||
ISSN | 0394-9370 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | doi: 10.1080/03949370.2011.554885 | Approved | no | ||
Call Number | Equine Behaviour @ team @ | Serial | 6177 | ||
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Author | Meriggi, A.; Dagradi, V.; Dondina, O.; Perversi, M.; Milanesi, P.; Lombardini, M.; Raviglione, S.; Repossi, A. | ||||
Title | Short-term responses of wolf feeding habits to changes of wild and domestic ungulate abundance in Northern Italy | Type | Journal Article | ||
Year | 2014 | Publication | Ethology Ecology & Evolution | Abbreviated Journal | Ethology Ecology & Evolution |
Volume | 27 | Issue | 4 | Pages | 389-411 |
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Publisher | Taylor & Francis | Place of Publication | Editor | ||
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ISSN | 0394-9370 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | doi: 10.1080/03949370.2014.986768 | Approved | no | ||
Call Number | Equine Behaviour @ team @ | Serial | 6688 | ||
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Author | Powell, D. | ||||
Title | Female–female competition or male mate choice? Patterns of courtship and breeding behavior among feral horses (Equus caballus) on Assateague Island | Type | Journal Article | ||
Year | 2008 | Publication | Journal of Ethology | Abbreviated Journal | J. Ethol. |
Volume | 26 | Issue | 1 | Pages | 137-144-144 |
Keywords | Biomedical and Life Sciences | ||||
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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Publisher | Springer Japan | Place of Publication | Editor | ||
Language | Summary Language | Original Title | |||
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ISSN | 0289-0771 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Equine Behaviour @ team @ | Serial | 5412 | ||
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Author | Baragli, P.; Vitale, V.; Paoletti, E.; Sighieri, C.; Reddon, A.R. | ||||
Title | Detour behaviour in horses (Equus caballus) | Type | Journal Article | ||
Year | 2011 | Publication | Journal of Ethology | Abbreviated Journal | J. Ethol. |
Volume | 29 | Issue | 2 | Pages | 227-234 |
Keywords | Detour behaviour; Equus caballus; Horses; Lateralization; Spatial reasoning | ||||
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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Publisher | Springer Japan | Place of Publication | Editor | ||
Language | English | Summary Language | Original Title | ||
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ISSN | 0289-0771 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Equine Behaviour @ team @ | Serial | 5686 | ||
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Author | 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 | Abbreviated Journal | |
Volume | Issue | Pages | |||
Keywords | computerized feeding, waiting situation, stress, horse | ||||
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Publisher | KTBL-Schrift 510 | Place of Publication | Darmstadt | Editor | |
Language | Summary Language | Original Title | |||
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Series Volume | Series Issue | Edition | |||
ISSN | ISBN | 978-3-945088-13-5 | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Equine Behaviour @ team @ | Serial | 5927 | ||
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Author | Wolter, R.; Krueger, K. | ||||
Title | Einflussfaktoren auf das Grooming-Verhalten bei wilden und verwilderten Pferden [Influencing factors on grooming behaviour in wild living horses] | Type | Book Chapter | ||
Year | 2015 | Publication | Current research in applied ethology [Aktuelle Arbeiten zur artgemäßen Tierhaltung] KTBL Schrift 510 | Abbreviated Journal | KTBL Schrift 510 |
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Abstract | 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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Publisher | KTBL-Schrift 510 | Place of Publication | Darmstadt | Editor | |
Language | Summary Language | Original Title | |||
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ISSN | ISBN | 978-3-945088-13-5 | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Equine Behaviour @ team @ | Serial | 5928 | ||
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Author | Krueger K., Farmer K., Byrne R. | ||||
Title | The use of sensory laterality for indicating emotional and cognitive reactions on environmental stimuli in animals [Die sensorische Lateralität als Indikator für emotionale und kognitive Reaktionen auf Umweltreize beim Tier]. | Type | Book Chapter | ||
Year | 2011 | Publication | Current research in applied ethology [Aktuelle Arbeiten zur artgemäßen Tierhaltung | Abbreviated Journal | |
Volume | Issue | Pages | 13-23 | ||
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Abstract | Summary Many animals are lateralized when using sensory organs such as the eyes, ears or nostrils. Sensory laterality is not, as previously believed, caused by adjustment to motor laterality, but rather by one sided information processing in the particular brain hemi-spheres. While the right hemisphere predominantly analyses emotional information, the left hemisphere governs controlled rational, cognitive decisions. Since the brain hemi-spheres are largely connected with contralateral sensory organs, it is possible to infer how the information may be being interpreted by the side of preferred eye, ear or nostril used. The left eye usually dominates in emotional situations, i.e. fear or positive ex-citement, and the right eye in rational situations. Moreover, laterality increases when animals are stressed, e.g. when animals are confronted with anthropogenic or natural factors they can not handle, such as unsuitable housing or training conditions or un-avoidable predation pressure and social competition. A strong or increasing laterality could therefore potentially indicate welfare issues. Zusammenfassung Viele Tiere zeigen eine eindeutige sensorische Lateralität, sprich sie benutzen bevor-zugt ein Auge, ein Ohr, oder eine Nüster zur Aufnahme von Sinneseindrücken. Dies korreliert in den meisten Fällen nicht mit der motorischen Lateralität, sondern wird viel mehr durch die einseitige Verarbeitung von Informationen in den jeweiligen Gehirnhe-misphären bedingt. So werden emotionale Reaktionen von der rechten, reaktiven Ge-hirnhemisphäre und rationale Reaktionen von der linken, kognitiven Gehirnhemisphäre gesteuert. Da die Gehirnhälften zum Großen Teil mit den kontrolateralen Sinnesorga-nen verbunden sind lässt die Seite mit welcher Sinneseindrücke aufgenommen werden Schlüsse auf deren Informationsgehalt zu. So zeigen Tiere bei linksseitiger Aufnahme von Sinneseindrücken vermehrt reaktive, emotionalen Reaktionen, wie etwa bei Angst oder freudige Erregung, und bei rechtsseitig aufgenommene Sinneseindrücke eher rationales, gesteuertes Verhalten. Zudem verstärkt sich die sensorische Lateralität wenn Tiere Stress erfahren, sprich wenn sie wiederholt mit Situationen anthropogenen oder natürlichen Ursprungs konfrontiert werden denen sie nicht gewachsen sind, wie etwa bei unpassenden Haltungs- und Trainingsbedingungen, oder bei unausweichli-chem Raubtierdruck und sozialer Konkurrenz. Eine stark ausgeprägte, zunehmende sensorische Lateralität kann daher auf ein beeinträchtigtes Wohlergehen der Tiere hinweisen. |
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Publisher | KTBL | Place of Publication | Darmstadt | Editor | Erhard,M. ; Pollmann, U.; Puppe, B.; Reiter,K.; Waiblinger , S. |
Language | Greman | Summary Language | Original Title | ||
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ISSN | ISBN | 978-3-941583-58-0 | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Equine Behaviour @ team @ | Serial | 5445 | ||
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Author | Humphrey, N. K. | ||||
Title | The social function of intellect. | Type | Book Chapter | ||
Year | 1976 | Publication | Growing Points in Ethology | Abbreviated Journal | |
Volume | Issue | Pages | 303-317 | ||
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Publisher | Cambridge University Press | Place of Publication | Cambridge | Editor | Bateson, P. P. G.; Hinde, R. A. |
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Notes | Approved | no | |||
Call Number | Equine Behaviour @ team @ | Serial | 5459 | ||
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Author | Mettke-Hofmann, C.; Winkler, H.; Leisler, B. | ||||
Title | The Significance of Ecological Factors for Exploration and Neophobia in Parrots | Type | Journal Article | ||
Year | 2002 | Publication | Ethology | Abbreviated Journal | |
Volume | 108 | Issue | 3 | Pages | 249-272 |
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Abstract | Exploratory behaviour plays an important role in most animals for gathering information about their environment. If it constitutes an adaptation to different environmental conditions exploratory behaviour should differ between species. This has been tested with several hypotheses. Sixty-one parrot species (Psittacidae) from eight tribes with different diets and habitat preferences were investigated in aviaries. Two tests were carried out. First, a novel object (wooden ring) in the familiar aviary was presented on two test days in the exploration test. Latencies until first contact with the object and the duration of exploration were recorded. Secondly, in the neophobia test, novel objects were placed beside the feeding dish and latencies until first food intake were recorded. The exploration and neophobia data were related to 12 (13) ecological variables using multiple regression analyses. Phylogenetic relationships were considered. Species that inhabit complex habitats, such as forest edges, or that feed on buds or species from islands showed the shortest latencies in the exploration test. In contrast, long latencies were related to a diet including a great amount of seeds and/or flowers. The longest duration of exploration occurred in species eating nuts or originating from islands, whereas short durations were related to feeding on seeds. Neophobia was positively related to a diet consisting of insects, and negatively to a diet of leaves. There was no relationship between measures of exploration and neophobia. Exploration and neophobia seem to be tightly related to the ecology of a species. | ||||
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Publisher | Blackwell Wissenschafts-Verlag | Place of Publication | Editor | ||
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Series Volume | Series Issue | Edition | |||
ISSN | 1439-0310 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Equine Behaviour @ team @ | Serial | 5617 | ||
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