Records |
Author |
Miyata, H.; Gajdon, G.K.; Huber, L.; Fujita, K. |
Title |
How do keas (Nestor notabilis) solve artificial-fruit problems with multiple locks? |
Type |
Journal Article |
Year |
2011 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
14 |
Issue |
1 |
Pages |
45-58 |
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Abstract |
Keas, a species of parrots from New Zealand, are an interesting species for comparative studies of problem solving and cognition because they are known not only for efficient capacities for object manipulation but also for explorative and playful behaviors. To what extent are they efficient or explorative, and what cognitive abilities do they use? We examined how keas would solve several versions of artificial-fruit box problems having multiple locks. After training keas to remove a metal rod from over a Plexiglas lid that had to be opened, we exposed the birds to a variety of tasks having two or more locks. We also introduced a preview phase during which the keas had extended opportunity to look at the tasks before the experimenter allowed the birds to solve them, to examine whether the preview phase would facilitate the birds' performance on the tasks. In a large number of tests, the keas showed a strong trend to solve the tasks with no positive effect of previewing the tasks. When the tasks became complex, however, the keas corrected inappropriate responses more quickly when they had had chance to preview the problems than when they had not. The results suggest that the keas primarily used explorative strategies in solving the lock problems but might have obtained some information about the tasks before starting to solve them. This may reflect a good compromise of keas' trial-and-error tendency and their good cognitive ability that result from a selection pressure they have faced in their natural habitat. |
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1435-9456 |
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Equine Behaviour @ team @ Miyata2011 |
Serial |
6549 |
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Author |
Pérez-Barbería, F.J.; Gordon, I.J. |
Title |
Gregariousness increases brain size in ungulates |
Type |
Journal Article |
Year |
2005 |
Publication |
Oecologia |
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Volume |
145 |
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Equine Behaviour @ team @ Pérez-Barbería2005 |
Serial |
6258 |
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Author |
Henry, S.; Fureix, C.; Rowberry, R.; Bateson, M.; Hausberger, M. |
Title |
Do horses with poor welfare show 'pessimistic' cognitive biases? |
Type |
Journal Article |
Year |
2017 |
Publication |
The Science of Nature |
Abbreviated Journal |
Sci. Nat. |
Volume |
104 |
Issue |
1 |
Pages |
8 |
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Abstract |
This field study tested the hypothesis that domestic horses living under putatively challenging-to-welfare conditions (for example involving social, spatial, feeding constraints) would present signs of poor welfare and co-occurring pessimistic judgement biases. Our subjects were 34 horses who had been housed for over 3 years in either restricted riding school situations (e.g. kept in single boxes, with limited roughage, ridden by inexperienced riders; N = 25) or under more naturalistic conditions (e.g. access to free-range, kept in stable social groups, leisure riding; N = 9). The horses' welfare was assessed by recording health-related, behavioural and postural indicators. Additionally, after learning a location task to discriminate a bucket containing either edible food ('positive' location) or unpalatable food ('negative' location), the horses were presented with a bucket located near the positive position, near the negative position and halfway between the positive and negative positions to assess their judgement biases. The riding school horses displayed the highest levels of behavioural and health-related problems and a pessimistic judgment bias, whereas the horses living under more naturalistic conditions displayed indications of good welfare and an optimistic bias. Moreover, pessimistic bias data strongly correlated with poor welfare data. This suggests that a lowered mood impacts a non-human species' perception of its environment and highlights cognitive biases as an appropriate tool to assess the impact of chronic living conditions on horse welfare. |
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1432-1904 |
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Equine Behaviour @ team @ Henry2017 |
Serial |
6665 |
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Author |
Iliopoulos, Y.; Sgardelis, S.; Koutis, V.; Savaris, D. |
Title |
Wolf depredation on livestock in central Greece |
Type |
Journal Article |
Year |
2009 |
Publication |
Mammal Research |
Abbreviated Journal |
Mamm. Reas. |
Volume |
54 |
Issue |
1 |
Pages |
11-22 |
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Abstract |
We studied wolfCanis lupus Linnaeus, 1758 -- livestock conflict in central Greece by investigating patterns of 267 verified wolf attacks on livestock for 21 months. Wolves attacked adult goats 43% and cattle 218% more than expected, whereas sheep 41% less than expected from their availability. Wolves killed less than four sheep or goats in 79%, and one cow or calf in 74% of depredation events, respectively. We recorded higher attack rates during wolf post-weaning season. Wolf attacks on strayed, or kept inside non predator-proof enclosures, sheep and goats, were on average two to four times respectively more destructive than those when livestock was guarded by a shepherd. Sheepdog use reduced losses per attack. Optimal sheepdog number ranged from 3 to 9 animals depending on flock size. Losses per attack were positively related to the number of wolves involved. Total losses per farm were positively correlated with the size of livestock unit but percentage losses per capita increased with decreasing flock size. Management implications to mitigate livestock depredation are discussed. |
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2199-241x |
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Equine Behaviour @ team @ Iliopoulos2009 |
Serial |
6576 |
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Author |
Genov, P.W.; Kostava, V. |
Title |
Untersuchungen zur zahlenmäßigen Stärke des Wolfes und seiner Einwirkung auf die Haustierbestände in Bulgarien |
Type |
Journal Article |
Year |
1993 |
Publication |
Zeitschrift für Jagdwissenschaft |
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Volume |
39 |
Issue |
4 |
Pages |
217-223 |
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Abstract |
Die Untersuchung wurde in der Zeitspanne von 1984 bis 1988 durchgeführt. Es wurden die Protokolle des Staatlichen Versicherungsinstituts benutzt, die Angaben für Raubüberfälle von Wölfen auf Haustiere beinhalten (Tabelle 1). Außerdem wurden Angaben über die während dieser Zeitspanne erlegten Wölfe zusammengefaßt. Die Abschußzahlen lauten: 1984 – 163, 1985 – 147, 1986 – 179, 1987 – 211 und 1988 – 220 Tiere. Die Anzahl der in den einzelnen Gebirgen lebenden Wölfe wurde nach einer Umfrage festgestellt. Für die in Betracht kommenden Gebirge werden folgende Bestandszahlen angenommen: Rhodopen -- 60-80 Individuen, 189 bis 264 km2 pro Tier, Rila- und Piringebirge -- 60-80 Tiere, 109 bis 145 km2 pro Tier, Ossogowo-Belassiza Gebirgssystem -- 40-50 Individuen, 57-70 km2 pro Tier, West- und Mittelbalkan -- 35-38 Wölfe, 200 km2 pro Tier. Dazu kommen noch 10-15 Wölfe im Flußbecken von Beli Lom und etwa 20 Exemplare in Strandscha- und Sakargebirge. Insgesamt lebten in Bulgarien im Jahre 1988 etwa 260-330 Wölfe (Abb. 1). |
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1439-0574 |
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Equine Behaviour @ team @ Genov1993 |
Serial |
6686 |
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Author |
Kruska, D. |
Title |
Mammalian domestication and its effect on brain structure and behavior |
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Book Chapter |
Year |
1988 |
Publication |
Intelligence and Evolutionary Biology |
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Springer-Verlag |
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New York |
Editor |
Jerison, H.J.; Jerison, I. |
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Equine Behaviour @ team @ Kruska1988 |
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6232 |
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Ruid, D.B.; Paul, W.J.; Roell, B.J.; Wydeven, A.P.; Willging, R.C.; Jurewicz, R.L.; Lonsway, D.H. |
Title |
Wolf-Human Conflicts and Management in Minnesota, Wisconsin, and Michigan |
Type |
Book Chapter |
Year |
2009 |
Publication |
Recovery of Gray Wolves in the Great Lakes Region of the United States: An Endangered Species Success Story |
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279-295 |
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Springer New York |
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New York, NY |
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Wydeven, A.P.; Van Deelen, T.R.; Heske, E.J. |
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978-0-387-85952-1 |
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Equine Behaviour @ team @ Ruid2009 |
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6577 |
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Author |
Irving-Pease, E.K.; Ryan, H.; Jamieson, A.; Dimopoulos, E.A.; Larson, G.; Frantz, L.A.F. |
Title |
Paleogenomics of Animal Domestication |
Type |
Book Chapter |
Year |
2019 |
Publication |
Paleogenomics: Genome-Scale Analysis of Ancient DNA |
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Pages |
225-272 |
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Starting with dogs, over 15,000 years ago, the domestication of animals has been central in the development of modern societies. Because of its importance for a range of disciplines – including archaeology, biology and the humanities – domestication has been studied extensively. This chapter reviews how the field of paleogenomics has revolutionised, and will continue to revolutionise, our understanding of animal domestication. We discuss how the recovery of ancient DNA from archaeological remains is allowing researchers to overcome inherent shortcomings arising from the analysis of modern DNA alone. In particular, we show how DNA, extracted from ancient substrates, has proven to be a crucial source of information to reconstruct the geographic and temporal origin of domestic species. We also discuss how ancient DNA is being used by geneticists and archaeologists to directly observe evolutionary changes linked to artificial and natural selection to generate a richer understanding of this fascinating process. |
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Springer International Publishing |
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Cham |
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Lindqvist, C.; Rajora, O.P. |
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978-3-030-04753-5 |
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Equine Behaviour @ team @ Irving-Pease2019 |
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6583 |
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Author |
Aldezabal, A.; Garin, I. |
Title |
Browsing preference of feral goats (Capra hircus L.) in a Mediterranean mountain scrubland |
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Journal Article |
Year |
2000 |
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J Arid Env |
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44 |
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Equine Behaviour @ team @ Aldezabal2000 |
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6256 |
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Author |
McComb, K.; Moss, C.; Sayialel, S.; Baker, L. |
Title |
Unusually extensive networks of vocal recognition in African elephants |
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Journal Article |
Year |
2000 |
Publication |
Anim Behav |
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59 |
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Equine Behaviour @ team @ McComb2000 |
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6281 |
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