| Records |
| Author |
Fiset, S.; Beaulieu, C.; Landry, F. |
| Title |
Duration of dogs' (Canis familiaris) working memory in search for disappearing objects |
Type |
Journal Article |
| Year |
2003 |
Publication  |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
6 |
Issue |
1 |
Pages |
1-10 |
| Keywords |
Animals; Dogs/*psychology; *Exploratory Behavior; Female; Male; *Memory; Visual Perception |
| Abstract |
Two experiments explored the duration of dogs' working memory in an object permanence task: a delay was introduced between the disappearance of a moving object behind a box and the beginning of the search by the animal. In experiment 1, the dogs were tested with retention intervals of 0, 10, 30, and 60 s. Results revealed that the dogs' accuracy declined as a function of the length of the retention interval but remained above chance for each retention interval. In experiment 2, with new subjects, longer retention intervals (0, 30, 60, 120, and 240 s) were presented to the dogs. Results replicated findings from experiment 1 and revealed that the dogs' accuracy remained higher than chance level with delays up to 240 s. In both experiments, the analysis of errors also showed that the dogs searched as a function of the proximity of the target box and were not subject to intertrial proactive interference. In the discussion, we explore different alternatives to explain why dogs' search behaviour for hidden objects decreased as a function of the retention intervals. |
| Address |
Secteur Sciences Humaines, Universite de Moncton, Campus d'Edmundston, E3V 2S8, Edmundston, New Brunswick, Canada. sfiset@umce.ca |
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English |
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| ISSN |
1435-9448 |
ISBN |
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| Notes |
PMID:12658530 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2586 |
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| Author |
Kubinyi, E.; Miklósi, Á.; Topál, J.; Csányi, V. |
| Title |
Social mimetic behaviour and social anticipation in dogs: preliminary results |
Type |
Journal Article |
| Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
6 |
Issue |
1 |
Pages |
57-63 |
| Keywords |
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| Abstract |
Learning contributes to the development of mutual mimicry in group mates. The aim of our study was to investigate whether dogs would initiate walking a detour if they were repeatedly exposed to the detouring behaviour of their owner. Eight dog owners were asked to modify their usual way of approaching their home at the end of their daily walks, namely, to make a short detour before the entrance. Owners performed the detour at least 180 times, over a period of 3-6 months. During the first 30 detours (trials 1-30) all dogs followed the owner on the new route. Between trials 151 and 180, four dogs started to walk the detour before the owner displayed any intention to walk in that direction in 50-93% of the cases. Further observations that were carried out on one dog showed that the initialisation of the detours manifested sooner if a second familiar person started to walk the detours. Interestingly, the dog persisted in initialising detours long after the owners stopped detouring. We describe the observed phenomenon in the framework of social anticipation that manifests when an animal learns the proper sequence of an act performed by another animal, so that it can (1) predict the action in this sequence, and (2) as a result start either a similar or a complementary action as a response. These observations suggest that the dogs' social anticipation ability contributes to behavioural synchronisation and cooperative processes between dog and owner. |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3260 |
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| Author |
Wallner, B.; Brem, G.; Muller, M.; Achmann, R. |
| Title |
Fixed nucleotide differences on the Y chromosome indicate clear divergence between Equus przewalskii and Equus caballus |
Type |
Journal Article |
| Year |
2003 |
Publication |
Animal Genetics |
Abbreviated Journal |
Anim Genet |
| Volume |
34 |
Issue |
6 |
Pages |
453-456 |
| Keywords |
Animals; Base Sequence; DNA, Mitochondrial/genetics; Genetic Variation/*genetics; Horses/classification/*genetics; Male; Molecular Sequence Data; Phylogeny; Probability; Species Specificity; Y Chromosome/*genetics |
| Abstract |
The phylogenetic relationship between Equus przewalskii and E. caballus is often a matter of debate. Although these taxa have different chromosome numbers, they do not form monophyletic clades in a phylogenetic tree based on mtDNA sequences. Here we report sequence variation from five newly identified Y chromosome regions of the horse. Two fixed nucleotide differences on the Y chromosome clearly display Przewalski's horse and domestic horse as sister taxa. At both positions the Przewalski's horse haplotype shows the ancestral state, in common with the members of the zebra/ass lineage. We discuss the factors that may have led to the differences in mtDNA and Y-chromosomal observations. |
| Address |
Institut fur Tierzucht und Genetik, Veterinarmedizinische Universitat Wien, Veterinarplatz, Wien, Austria. wallner@i122server.vu-wien.ac.at |
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English |
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Edition |
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| ISSN |
0268-9146 |
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| Notes |
PMID:14687077 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5038 |
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| Author |
Lee, P.C. |
| Title |
Innovation as a behavioural response to environmental challenges |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal Innovation |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
261-279 |
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| Publisher |
Oxford University Press |
Place of Publication |
Oxford |
Editor |
S. M. Reader and K. N. Laland |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6534 |
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| Author |
Laland, K. N.; van Bergen, Y |
| Title |
Experimental studies of innovation in the guppy |
Type |
Journal Article |
| Year |
2003 |
Publication |
Animal Innovation |
Abbreviated Journal |
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Issue |
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Pages |
155-174 |
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Oxford University Press |
Place of Publication |
Ox |
Editor |
S. M. Reader and K. N. Laland |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6537 |
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| Author |
Greenberg, R. |
| Title |
The role of neophobia and neophilia in the development of innovative behavour in birds |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal Innovation |
Abbreviated Journal |
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Issue |
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Pages |
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Oxford University Press |
Place of Publication |
Oxford |
Editor |
S. M. Reader and K. N. Laland |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6547 |
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| Author |
Reader, S. M.; MacDonald, K. |
| Title |
Environmental variability and primate behavioural flexibiity |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal Innovation |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
83-116 |
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| Publisher |
Oxford University Press |
Place of Publication |
Oxford |
Editor |
Reader, S. M.; Laland, K. L. |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6548 |
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| Author |
Sol, D. |
| Title |
Behavioural flexibility: a neglected issue in the ecological and evolutionary literature |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal innovation. |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
63-82 |
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| Publisher |
Oxford University Press |
Place of Publication |
Oxford |
Editor |
S. M. Reader and K. N. Laland |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6532 |
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| Author |
Galef, G.G. Jr. |
| Title |
Social learning: promotor or inhibitor of innovation? |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal Intelligence |
Abbreviated Journal |
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Issue |
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Pages |
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Oxford University Press |
Place of Publication |
Oxford |
Editor |
Reader, S.M.; Laland, K. N. |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5750 |
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| Author |
Seyfarth, R.M.; Cheney, D.L. |
| Title |
The Structure of Social Knowledge in Monkeys |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Animal Social Complexity: Intelligence, Culture, and Individualized Societies |
Abbreviated Journal |
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Pages |
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| Publisher |
Harvard University Press |
Place of Publication |
Cambridge, Massachusetts |
Editor |
F. B. M. de Waal; P. L. Tyack |
| Language |
English |
Summary Language |
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Original Title |
Animal Social Complexity: Intelligence, Culture, and Individualized Societies |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
978-0674009295 |
Medium |
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| Notes |
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Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
464 |
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