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Author |
Krause, J.; Bumann, D.; Todt, D. |
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Title |
Relationship between the position preference and nutritional state of individuals in schools of juvenile roach (Rutilus rutilus) |
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Journal Article |
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Year |
1992 |
Publication |
Behavioral Ecology and Sociobiology |
Abbreviated Journal |
Behav. Ecol. Sociobiol. |
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Volume |
30 |
Issue |
3 |
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177-180 |
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Abstract |
Position preferences of well-fed and food-deprived juvenile roach were investigated in schools of 2 and 4 fish in the laboratory. Food-deprived fish appeared significantly more often in the front position than their well-fed conspecifics. For fish at the same hunger level, individuals at the front of the school had the highest feeding rate. These results represent the first evidence for a relationship between the nutritional state of individual fish and their positions in a school and suggest a functional advantage of the preference. |
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Equine Behaviour @ team @ |
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5140 |
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Author |
Keiper Rr, |
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Title |
Population dynamics of feral ponies. |
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Year |
1979 |
Publication |
Symposium on the Ecology and Behavior of wild and feral Equids |
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175-184 |
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Symposium on the Ecology and Behavior of wild and feral Equids |
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Laramie |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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1252 |
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Author |
Wolfe Ml, |
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Title |
Feral horse demography: A preliminary report (Abstract) |
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Conference Volume |
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1979 |
Publication |
Symposium on the Ecology and Behavior of wild and feral Equids, Laramie |
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173-174 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1715 |
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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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76 |
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1 |
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168-173 |
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Keywords |
Aggression; Animals; Male; Songbirds/*physiology; *Territoriality; Time Factors; Vocalization, Animal/*physiology |
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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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Department of Animal Behaviour, Bielefeld University, PO Box 100 131, D-33501 Bielefeld, Germany. rouven.schmidt@uni-bielefeld.de |
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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 |
List, C. |
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Title |
Democracy in animal groups: a political science perspective |
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2004 |
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Trends in Ecology & Evolution (Personal Edition) |
Abbreviated Journal |
Trends Ecol Evol |
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19 |
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4 |
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168-169 |
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0169-5347 |
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PMID:16701250 |
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Equine Behaviour @ team @ |
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5137 |
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Author |
Barton, R. |
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Title |
The evolutionary ecolgy of the primate brain |
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Book Chapter |
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Year |
2002 |
Publication |
Comparative Primate Socioecology |
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167-204 |
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Cambridge University Press |
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Cambridge |
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Lee, P. C. |
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ISBN-13: 9780521004244 | ISBN-10: 0521004241 |
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Equine Behaviour @ team @ |
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5450 |
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Author |
Shettleworth, S.J. |
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Title |
Cognitive ecology: field or label? |
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Journal Article |
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Year |
2000 |
Publication |
Trends in Ecology & Evolution |
Abbreviated Journal |
Trends. Ecol. Evol |
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15 |
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4 |
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161 |
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Depts of Psychology and Zoology, University of Toronto, Toronto, Ontario, Canada M5S 3G3 |
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0169-5347 |
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Notes |
PMID:10717686 |
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refbase @ user @ |
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373 |
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Author |
Mirabet, V.; Fréon, P.; Lett, C. |
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Title |
Factors affecting information transfer from knowledgeable to naive individuals in groups |
Type |
Journal Article |
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Year |
2008 |
Publication |
Behavioral Ecology and Sociobiology |
Abbreviated Journal |
Behav. Ecol. Sociobiol. |
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Volume |
63 |
Issue |
2 |
Pages |
159-171-171 |
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Biomedical and Life Sciences |
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There is evidence that individuals in animal groups benefit from the presence of knowledgeable group members in different ways. Experiments and computer simulations have shown that a few individuals within a group can lead others, for a precise task and at a specific moment. As a group travels, different individuals possessing a particular knowledge may act as temporary leaders, so that the group will, as a whole, follow their behaviour. In this paper, we use a model to study different factors influencing group response to temporary leadership. The model is based on four individual behaviours. Three of those, attraction, repulsion, and alignment, are shared by all individuals. The last one, attraction toward the source of a stimulus, concerns only a fraction of the group members. We explore the influence of group size, proportion of stimulated individuals, number of influential neighbours, and intensity of the attraction to the source of the stimulus, on the proportion of the group reaching this source. Special attention is given to the simulation of large group size, close to those observed in nature. Groups of 100, 400 and 900 individuals are currently simulated, and up to 8,000 in one experiment. We show that more stimulated individuals and a larger group size both induce the arrival of a larger fraction of the group. The number of influential neighbours and the intensity of the stimulus have a non-linear influence on the proportion of the group arrival, displaying first a positive relationship and then, above a given threshold, a negative one. We conclude that an intermediate level of group cohesion provides optimal transfer information from knowledgeable to naive individuals. |
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Springer Berlin / Heidelberg |
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0340-5443 |
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Equine Behaviour @ team @ |
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5295 |
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Author |
Berger, J, |
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Title |
Social systems, resources, and phylogenetic inertia: an experimental test and its limitations |
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1988 |
Publication |
Ecology of Social Behavior |
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157-186 |
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Academic Press |
Place of Publication |
San Diego |
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Slobochikoff, C.N. |
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Ecology of Social Behavior |
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Equine Behaviour @ team @ |
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2234 |
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Author |
FitzGibbon, C. D. |
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Title |
The costs and benefits of predator inspection behaviour in Thomson's gazelles |
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Year |
1994 |
Publication |
Behavioral Ecology and Sociobiology |
Abbreviated Journal |
Behav. Ecol. Sociobiol. |
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Volume |
34 |
Issue |
2 |
Pages |
139-148 |
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refbase @ user @ |
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524 |
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