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| Author |
Marinier, S.L.; Alexander, A.J. |
Title  |
Coprophagy as an avenue for foals of the domestic horse to learn food preferences from their dams |
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Journal Article |
| Year |
1995 |
Publication |
Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
| Volume |
173 |
Issue |
2 |
Pages |
121-124 |
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| Abstract |
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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| Author |
Gärdenfors P. |
| Title |
Cued and detached representations in animal cognition |
Type |
Journal Article |
| Year |
1995 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
35 |
Issue |
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Pages |
263-273 |
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3454 |
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Duncan, I.J.H. |
| Title |
D.G.M. Wood-Gush Memorial Lecture: An applied ethologist looks at the question “Why?” |
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Journal Article |
| Year |
1995 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
44 |
Issue |
2-4 |
Pages |
205-217 |
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Causation; Cognition; Function; Future research; Ontogeny; Phylogeny; States of suffering; Welfare |
| Abstract |
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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Dugatkin, L.A.; Hoglund, J. |
| Title |
Delayed breeding and the evolution of mate copying in lekking species |
Type |
Journal Article |
| Year |
1995 |
Publication |
Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
| Volume |
174 |
Issue |
3 |
Pages |
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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| Author |
Anderson B. |
| Title |
Dendrites and cognition: A negative pilot study in the rat |
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Journal Article |
| Year |
1995 |
Publication |
Intelligence |
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20 |
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291-308 |
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3453 |
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PITRA, C.H.; STREICH, W.J.; REINSCH, A.; FICKEL, J. |
| Title |
Die Population des Somali-Wildesels (Equus africanus somalicus Sclater) in menschlicher Obhut: Demographische und genetische Aspekte |
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Journal Article |
| Year |
1995 |
Publication |
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 |
Byrnl, R.W.; Tomasello, M. |
| Title |
Do rats ape? |
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Journal Article |
| Year |
1995 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
50 |
Issue |
5 |
Pages |
1417-1420 |
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refbase @ user @ |
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589 |
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| Author |
Ellis, L. |
| Title |
Dominance and reproductive success among nonhuman animals: A cross-species comparison |
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Journal Article |
| Year |
1995 |
Publication |
Ethology and Sociobiology |
Abbreviated Journal |
Ethol. a. Sociob. |
| Volume |
16 |
Issue |
4 |
Pages |
257-333 |
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This paper updates and extends Dewsbury's (1982) review of the literature on dominance and reproductive success (RS). The findings from approximately 700 studies are included, over two thirds of which were unavailable to Dewsbury. In order to give a highly condensed and yet meaningful overview, the main findings are represented in four tables, one for male nonprimates, one for female nonprimates, one for male primates, and one for female primates. In the tables for males, findings are analyzed in terms of six different indicators of RS, and in the tables for females, in terms of eight RS indicators. Outside the primate order, evidence largely supported the hypothesis that high-ranking males enjoy greater RS than do subordinate males. For females, studies are more evenly divided between those supporting the hypothesis that high rank and RS are positively correlated and those indicating no significant rank-RS relationship. This may reflect both the lower saliency of hierarchical relationships among females, as well as the lower variability in RS among females, relative to males. Among primates, a complex picture has emerged, especially in the case of males. Much of the complexity appears due to the importance of age and seniority in affecting dominance rank. Also, in some primate species, female preferences for sex partners seem to have little to do with the male's dominance rank, at least at the time mating takes place. Nevertheless, the majority of studies suggest that high- to middle-ranking males have at least a slight lifetime reproductive advantage over the lowest ranking males. |
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722 |
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| Author |
Laughlin N.K.; Lasky R.E.; Luck M.L.; Kluender K.R.; Hecox K.E. |
| Title |
Early lead exposure alters behavioral and electrophysiological indices of auditory processing in the rhesus monkey |
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Journal Article |
| Year |
1995 |
Publication |
Neurotoxicology and Teratology |
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17 |
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374-374 |
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3456 |
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| Author |
Lefebvre, L. |
| Title |
Ecological correlates of social learning: problems and solutions for the comparative method |
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Journal Article |
| Year |
1995 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
35 |
Issue |
1-3 |
Pages |
163-171 |
| Keywords |
Adaptive specialization; Social learning; Comparative method |
| Abstract |
Interspecific variation in learning and cognition is often accounted for by adaptive specialization, an ecological framework where variation between species in the environmental problems they face is thought to select for quantitatively and/or qualitatively different abilities. Adaptive specialization theory relies on the comparative method for testing its hypotheses and assumes a naturally selected basis for the predicted differences. This review examines social learning as a specialization to group-living and scramble feeding competition. It points out one important problem with current studies in the area, the lack of quantitative controls for confounding variables that may cause type 1 or 2 error in comparative tests. A linear regression technique is proposed to measure and remove interspecific differences on control tests for which there is no predicted adaptive specialization; as in other areas of comparative biology, the adaptive prediction is then made on the residual deviation from the regression of these confounding variables. Examples are given from research on opportunistic Columbids, the group-living feral pigeon Columbia livia, and the territorial Zenaida dove, Zenaida aurita. |
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843 |
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