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Author |
Cooper, J.J. |
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Title |
Equine learning behaviour: Common knowledge and systematic research |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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24-26 |
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no |
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refbase @ user @ |
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630 |
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Author |
Ladewig, J. |
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Title |
Clever Hans is still whinnying with us |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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1 |
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20-21 |
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no |
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refbase @ user @ |
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631 |
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Author |
Hothersall, B.; Nicol, C. |
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Title |
Equine learning behaviour: accounting for ecological constraints and relationships with humans in experimental design |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
76 |
Issue |
1 |
Pages |
45-48 |
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no |
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refbase @ user @ |
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632 |
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Author |
Creighton, E. |
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Title |
Equine learning behaviour: Limits of ability and ability limits of trainers |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
76 |
Issue |
1 |
Pages |
43-44 |
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refbase @ user @ |
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633 |
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Author |
Goodwin, D. |
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Title |
Equine learning behaviour: What we know, what we don't and future research priorities |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
76 |
Issue |
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Pages |
17-19 |
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no |
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refbase @ user @ |
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634 |
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Author |
Linklater, W.L. |
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Title |
Equine learning in a wider context--Opportunities for integrative pluralism |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
76 |
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53-56 |
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no |
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refbase @ user @ |
Serial |
635 |
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Author |
Murphy, J.; Arkins, S. |
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Title |
Synthesizing what we know of equine learning behaviour |
Type |
Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
76 |
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Pages |
57-60 |
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no |
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Serial |
876 |
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Author |
Kulikova, E.E; Isaeva, A.S.; Rotkina, A.S.; Manykin, A.A.; Letarov, A.V. |
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Title |
Diversity and dynamics of bacteriophages in horse feces |
Type |
Journal Article |
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Year |
2007 |
Publication |
Microbiology |
Abbreviated Journal |
Microbiology |
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Volume |
76 |
Issue |
2 |
Pages |
271-278 |
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Abstract |
The complex cellulolytic microbial community of the horse intestines is a convenient model for studying the ecology of bacteriophages in natural habitats. Unlike the rumen of the ruminants, this community of the equine large intestine is not subjected to digestion. The inner conditions of the horse gut are much more stable in comparison to other mammals, due to the fact that the horse diet remains almost unchanged and the intervals between food consumption and defecation are much shorter than the whole digestive cycle. The results of preliminary analysis of the structure and dynamics of the viral community of horse feces, which combines direct and culture methods, are presented. In horse fecal samples, we detected more than 60 morphologically distinct phage types, the majority of which were present as a single phage particle. This indicates that the community includes no less than several hundreds of phage types. Some phage types dominated and constituted 5-11% of the total particle count each. The most numerous phage type had an unusual morphology: the tails of its members were extremely long (about 700 nm), flexible, and irretractable, while their heads were 100 nm in diameter. Several other phage types with similar but not identical properties were detected. The total coliphage plaque count of the samples taken from three animals revealed significant fluctuations in the phage titers. During the observation time, the maximum titer ranged within four orders of magnitude (10(3)-10(7) plaque forming units (PFU)/g); the minimum titer ranged within two orders of magnitude. The samples contained two to five morphologically distinct and potentially competitive coliphage types, specific to a single Escherichia coli strain. |
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Russian |
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0026-3656 |
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PMID:17583225 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2618 |
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Author |
Schmidt, R.; Amrhein, V.; Kunc, H.P.; Naguib, M. |
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Title |
The day after: effects of vocal interactions on territory defence in nightingales |
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Journal Article |
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Year |
2007 |
Publication |
The Journal of Animal Ecology |
Abbreviated Journal |
T. J. Anim. Ecol. |
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Volume |
76 |
Issue |
1 |
Pages |
168-173 |
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Keywords |
Aggression; Animals; Male; Songbirds/*physiology; *Territoriality; Time Factors; Vocalization, Animal/*physiology |
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Abstract |
1. Models on territory acquisition and tenure predict that territorial animals benefit by adjusting territorial defence behaviour to previous challenges they had experienced within the socially complex environment of communication networks. 2. Here, we addressed such issues of social cognition by investigating persisting effects of vocal contests on territory defence behaviour in nightingales Luscinia megarhynchos (Brehm). 3. Using interactive playback during nocturnal song of subjects, a rival was simulated to countersing either aggressively (by song overlapping) or moderately (by song alternating) from outside the subjects' territory. Thereby, the time-specific singing strategy provided an experimentally controlled source of information on the motivation of an unfamiliar rival. 4. Expecting that nightingales integrate information with time, the same rival was simulated to return as a moderately singing intruder on the following morning. 5. The results show that the vigour with which male nightingales responded to the simulated intrusion of an opponent during the day depended on the nature of the nocturnal vocal interaction experienced several hours before. 6. Males that had received the song overlapping playback the preceding night approached the simulated intruder more quickly and closer and sang more songs near the loudspeaker than did males that had received a song alternating playback. 7. This adjustment of territory defence strategies depending on information from prior signalling experience suggests that integrating information with time plays an important part in territory defence by affecting a male's decision making in a communication network. |
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Address |
Department of Animal Behaviour, Bielefeld University, PO Box 100 131, D-33501 Bielefeld, Germany. rouven.schmidt@uni-bielefeld.de |
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English |
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0021-8790 |
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PMID:17184365 |
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Equine Behaviour @ team @ |
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2749 |
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Author |
Hirsch, B.T. |
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Title |
Costs and benefits of within-group spatial position: a feeding competition model |
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Journal Article |
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Year |
2007 |
Publication |
The Quarterly review of biology |
Abbreviated Journal |
Q Rev Biol |
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82 |
Issue |
1 |
Pages |
9-27 |
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Animals; Competitive Behavior/*physiology; Dominance-Subordination; Feeding Behavior/*physiology/*psychology; Population Dynamics; Predatory Behavior/*physiology |
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Abstract |
An animal's within-group spatial position has several important fitness consequences. Risk of predation, time spent engaging in antipredatory behavior and feeding competition can all vary with respect to spatial position. Previous research has found evidence that feeding rates are higher at the group edge in many species, but these studies have not represented the entire breadth of dietary diversity and ecological situations faced by many animals. In particular the presence of concentrated, defendable food patches can lead to increased feeding rates by dominants in the center of the group that are able to monopolize or defend these areas. To fully understand the tradeoffs of within-group spatial position in relation to a variety of factors, it is important to be able to predict where individuals should preferably position themselves in relation to feeding rates and food competition. A qualitative model is presented here to predict how food depletion time, abundance of food patches within a group, and the presence of prior knowledge of feeding sites affect the payoffs of different within-group spatial positions for dominant and subordinate animals. In general, when feeding on small abundant food items, individuals at the front edge of the group should have higher foraging success. When feeding on slowly depleted, rare food items, dominants will often have the highest feeding rates in the center of the group. Between these two extreme points of a continuum, an individual's optimal spatial position is predicted to be influenced by an additional combination of factors, such as group size, group spread, satiation rates, and the presence of producer-scrounger tactics. |
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Address |
Department of Anthropology, Stony Brook University Stony Brook, New York 11794, USA. BTHIRSCH@IC.SUNYSB.EDU |
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0033-5770 |
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PMID:17354992 |
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refbase @ user @ |
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803 |
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