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PITRA, C.H.; STREICH, W.J.; REINSCH, A.; FICKEL, J. |
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Die Population des Somali-Wildesels (Equus africanus somalicus Sclater) in menschlicher Obhut: Demographische und genetische Aspekte |
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1995 |
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Zoologische Garten |
Abbreviated Journal |
Zool. Garten. |
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N.F. 65 |
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4 |
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245-257 |
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1472 |
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Author |
Anderson B. |
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Title |
Dendrites and cognition: A negative pilot study in the rat |
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1995 |
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Intelligence |
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20 |
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291-308 |
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refbase @ user @ |
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3453 |
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Dugatkin, L.A.; Hoglund, J. |
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Title |
Delayed breeding and the evolution of mate copying in lekking species |
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Journal Article |
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Year |
1995 |
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Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
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174 |
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3 |
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261-267 |
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Recent experimental evidence indicates that females may copy the mate choice of others. Here, we present a model for the evolution of mate copying strategies in lekking species. In the model, all females (copiers and non-copiers) assess male quality, but a copier's assessment of a male's quality increases after males have mated with other females. The model demonstrates that mate copying is favored when breeding late in the season has a relatively high cost. We hope that our results will spur empirical work quantifying the time constraints associated with breeding, thus allowing more direct tests of the model's predictions. |
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refbase @ user @ |
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482 |
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Duncan, I.J.H. |
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Title |
D.G.M. Wood-Gush Memorial Lecture: An applied ethologist looks at the question “Why?” |
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Journal Article |
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1995 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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44 |
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2-4 |
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205-217 |
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Causation; Cognition; Function; Future research; Ontogeny; Phylogeny; States of suffering; Welfare |
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The question “Why does an animal behave as it does?” can be answered in terms of ontogeny, function, phylogeny and causation. The achievements of applied ethology relative to those four approaches are reviewed, gaps in our knowledge are identified and predictions for fruitful avenues of future research are made. Ontogenic studies have been useful in the past and it is suggested that studies of the effects of early experience on the sexual behaviour of animals used in artificial breeding schemes might pay dividends. It is proposed that functional studies should be approached cautiously. More information is required on the process of domestication in order to increase the chances of success in the trend to farm exotic species. Studies on causation are likely to continue to be the mainstay of applied ethological research. It is suggested that within this category, studies on states of suffering, motivation and cognition are urgently required to answer the most pressing questions on animal welfare. |
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Equine Behaviour @ team @ |
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2919 |
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Author |
Gärdenfors P. |
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Title |
Cued and detached representations in animal cognition |
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Journal Article |
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Year |
1995 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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35 |
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263-273 |
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no |
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refbase @ user @ |
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3454 |
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Marinier, S.L.; Alexander, A.J. |
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Title |
Coprophagy as an avenue for foals of the domestic horse to learn food preferences from their dams |
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Journal Article |
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1995 |
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Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
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173 |
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2 |
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121-124 |
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Observation of foal development shows that the appearance of adult-type motor grazing behaviour, selection of grass vs. non-grass and the avoidance of poisonous plants occur concurrently between the ages of 4 and 6 weeks. Suckling behaviour and close association of foal with dam change with time but show no particular coincidence with grazing behavioural changes. Coprophagy of the foal on maternal faeces does, however, correspond chronologically with the foal learning to graze selectively. This correspondence suggests that, as well as other uses, in domestic horses coprophagy may function to imprint on the foal the food-selective values of its dam. |
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Equine Behaviour @ team @ |
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3626 |
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Chalmeau, R.; Gallo, A. |
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Title |
Cooperation in primates: Critical analysis of behavioural criteria |
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1995 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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35 |
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1-3 |
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101-111 |
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Cognition; Communication; Cooperation; Evolution; Primates |
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Concerning hunting in chimpanzees, cooperation has generally been attributed to the behaviour of two or more individuals acting together to achieve a common goal (Boesch and Boesch, 1989). The common goal is often considered as the concrete result of a common action by two or several individuals. Although this result could be used as a criterion for cooperation, it could also be an outcome due to chance. We suggest that the goal, viewed as a concrete benefit shared by the partners, is not a requisite of cooperation but rather a possible consequence of a common action largely submitted to social constraints. Individuals engaged in a cooperative task in order to solve a problem have to exchange information to adjust to each other's behaviour. However, evidence of communication between partners during simultaneous cooperation is rare. An experiment in which two chimpanzees each had to simultaneously pull a handle to get a fruit was performed. We analysed not only the concrete result of the partners' activity but also what the individuals took into account before pulling a handle. We tried to specify what the chimpanzees learned by means of a series of logical propositions which we were able to confront the experimental results. |
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570 |
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Author |
Russon, A.E.; Galdikas, B.M.F. |
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Title |
Constraints on great apes' imitation: Model and action selectivity in rehabilitant orangutan (Pongo pygmaeus) imitation |
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Journal Article |
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1995 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J. Comp. Psychol. |
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109 |
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1 |
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5-17 |
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*Imitation (Learning); Primates (Nonhuman) |
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We discuss selectivity in great ape imitation, on the basis of an observational study of spontaneous imitation in free-ranging rehabilitant orangutans (Pongo pygmaeus). Research on great ape imitation has neglected selectivity, although comparative evidence suggests it may be important. We observed orangutans in central Indonesian Borneo and assessed patterns in the models and actions they spontaneously imitated. The patterns we found resembled those reported in humans. Orangutans preferred models with whom they had positive affective relationships (e.g., important caregiver or older sibling) and actions that reflected their current competence, were receptively familiar, and were relevant to tasks that faced them. Both developmental and individual variability were found. We discuss the probable functions of imitation for great apes and the role of selectivity in directing it. We also make suggestions for more effective elicitation of imitation. (PsycINFO Database Record (c) 2012 APA, all rights reserved) |
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American Psychological Association |
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1939-2087(Electronic);0735-7036(Print) |
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Equine Behaviour @ team @ 1995-20268-001 |
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5690 |
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Author |
Russon AE; Galdikas BMF |
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Constraints on great apes' imitation: model and action selectivity in rehabilitant orangutan (Pongo pygmaeus) imitation |
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1995 |
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J. Comp. Psychol. |
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109 |
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5 |
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Equine Behaviour @ team @ |
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3037 |
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Limongelli L; Boysen ST; Visalberghi E |
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Comprehension of cause-effect relations in a tool-using task by chimpanzees (Pan troglodytes) |
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1995 |
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J. Comp. Psychol. |
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109 |
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18 |
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Equine Behaviour @ team @ |
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3015 |
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