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| Author |
Koops, M.A.; Abrahams, M.V. |
| Title |
Assessing the Ideal Free Distribution: Do Guppies Use Aggression as Public Information about Patch Quality? |
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Journal Article |
| Year |
1999 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
105 |
Issue |
9 |
Pages  |
737-746 |
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| Abstract |
Aggression can be costly to foragers, yet some recent research suggests that foragers should use aggression as a cue to patch quality (the attractive aggression hypothesis). If aggression is predictive of patch quality, then the attractive aggression hypothesis predicts that the distribution of foragers should follow the distribution of aggression. If, instead, aggression is repulsive because it is costly, then the distribution of foragers should diverge from the distribution of aggression. We tested the attractive aggression hypothesis using female guppies, Poecilia reticulata, and found that the distribution of foragers followed the distribution of food, but was unaffected by the distribution of aggression. These data do not support the attractive aggression hypothesis, but instead suggest that the distribution of aggression is a consequence of the distribution of foragers, and that aggression is not used as public information about patch quality. |
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Equine Behaviour @ team @ |
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4271 |
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Bonabeau, E.; Theraulaz, G.; Deneubourg, J-L. |
| Title |
Dominance orders in animal societies: the selforganization |
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Journal Article |
| Year |
1999 |
Publication |
Bulletin of Mathematical Biology |
Abbreviated Journal |
Bull Math Biol |
| Volume |
61 |
Issue |
4 |
Pages |
727-757 |
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In previous papers (Theraulaz et al. 1995, Bonabeau et al. 1996) we suggested, following Hogeweg and Hesper (1983, 1985), that the formation of dominance orders in animal societies could result from a selforganizing process involving a double reinforcement mechanism: winners reinforce their probability of winning and losers reinforce their probability of losing. This assumption, and subsequent models, were based on empirical data on primitively eusocial wasps (Polistes dominulus). By... |
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Equine Behaviour @ team @ |
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2172 |
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Hopster, H.; van der Werf, J.T.; Erkens, J.H.; Blokhuis, H.J. |
| Title |
Effects of repeated jugular puncture on plasma cortisol concentrations in loose-housed dairy cows |
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Journal Article |
| Year |
1999 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J Anim. Sci |
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77 |
Issue |
3 |
Pages |
708-714 |
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Equine Behaviour @ team @ |
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5486 |
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Feh, C. |
| Title |
Alliances and reproductive success in Camargue stallions |
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Journal Article |
| Year |
1999 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
57 |
Issue |
3 |
Pages |
705-713 |
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A study of a herd of Camargue horsesEquus caballus, showed that while the majority of high-ranking stallions held single-male harems, some sons of low-ranking mares, being low ranking themselves, formed alliances that could last a lifetime. The two stallions were each other's closest associate and preferential grooming partner. Alliances were based on coalitions in which either both partners confronted an intruder synchronously or the dominant of the pair tended the female(s) while the subordinate simultaneously displayed towards the rival. Alliance partners were of similar age but were not more closely related to each other than to other stallions in the herd. Long-term paternity data revealed that subordinates sired close to a quarter of the foals born into the alliance group, and significantly more foals than low-ranking stallions in the herd adopting a `sneak'-mating strategy. The dominant appeared to benefit from the presence of his subordinate partner. Fights occurred all year round, and the subordinate stallion of each alliance pair fought outside competitors more than twice as often as the dominant. Forming short-term alliances before defending mares on their own may enhance long-term reproductive success for both partners. Other benefits to both partners include higher survivorship of their foals and increased access to proven reproductive mares. These results suggest that the relationship between alliance partners is based on mutualism, but several conditions for reciprocity seem to be fulfilled: the benefit to the dominant (assistance in fights), and the benefit to the subordinate (access to reproduction), are both costly to the other partner and delayed in time. |
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refbase @ user @ |
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469 |
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Boysen, S.T.; Himes, G.T. |
| Title |
Current Issues And Emerging Theories In Animal Cognition |
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Journal Article |
| Year |
1999 |
Publication |
Annual Review of Psychology |
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50 |
Issue |
1 |
Pages |
683-705 |
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Comparative cognition is an emerging interdisciplinary field with contributions from comparative psychology, cognitive/experimental and developmental psychology, animal learning, and ethology, and is poised to move toward greater understanding of animal and human information-processing, reasoning, memory, and the phylogenetic emergence of mind. This chapter highlights some current issues and discusses four areas within comparative cognition that are yielding new approaches and hypotheses for studying basic conceptual capacities in nonhuman species. These include studies of imitation, tool use, mirror self-recognition, and the potential for attribution of mental states by nonhuman animals. Though a very old question in psychology, the study of imitation continues to provide new avenues for examining the complex relationships among and between the levels of imitative behaviors exhibited by many species. Similarly, recent work in animal tool use, mirror self-recognition (with all its contentious issues), and recent attempts to empirically study the potential for attributional capacities in nonhumans, all continue to provide fresh insights and novel paradigms for addressing the defining characteristics of these complex phenomena. |
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Equine Behaviour @ team @ Boysen1999 |
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2973 |
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Whiten, A.; Goodall, J.; McGrew, W.C.; Nishida, T.; Reynolds, V.; Sugiyama, Y.; Tutin, C.E.; Wrangham, R.W.; Boesch, C. |
| Title |
Cultures in chimpanzees |
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Journal Article |
| Year |
1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
399 |
Issue |
6737 |
Pages |
682-685 |
| Keywords |
Animals; *Behavior, Animal; Cognition; *Culture; Humans; Pan troglodytes/*physiology; Species Specificity |
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As an increasing number of field studies of chimpanzees (Pan troglodytes) have achieved long-term status across Africa, differences in the behavioural repertoires described have become apparent that suggest there is significant cultural variation. Here we present a systematic synthesis of this information from the seven most long-term studies, which together have accumulated 151 years of chimpanzee observation. This comprehensive analysis reveals patterns of variation that are far more extensive than have previously been documented for any animal species except humans. We find that 39 different behaviour patterns, including tool usage, grooming and courtship behaviours, are customary or habitual in some communities but are absent in others where ecological explanations have been discounted. Among mammalian and avian species, cultural variation has previously been identified only for single behaviour patterns, such as the local dialects of song-birds. The extensive, multiple variations now documented for chimpanzees are thus without parallel. Moreover, the combined repertoire of these behaviour patterns in each chimpanzee community is itself highly distinctive, a phenomenon characteristic of human cultures but previously unrecognised in non-human species. |
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Scottish Primate Research Group, School of Psychology, University of St Andrews, UK |
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0028-0836 |
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PMID:10385119 |
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refbase @ user @ |
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742 |
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Slagsvold, T.; Viljugrein, H. |
| Title |
Mate choice copying versus preference for actively displaying males by female pied flycatchers |
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Journal Article |
| Year |
1999 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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57 |
Issue |
3 |
Pages |
679-686 |
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no |
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1810 |
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Pell, S.M.; McGreevy, P.D. |
| Title |
Prevalence of stereotypic and other problem behaviours in thoroughbred horses |
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Journal Article |
| Year |
1999 |
Publication |
Australian Veterinary Journal |
Abbreviated Journal |
Aust Vet J |
| Volume |
77 |
Issue |
10 |
Pages |
678-679 |
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Animals; *Behavior, Animal; Breeding; Horse Diseases/*epidemiology; Horses/*psychology; New South Wales/epidemiology; Odds Ratio; Prevalence; *Stereotyped Behavior |
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Department of Animal Science, University of Sydney, New South Wales |
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0005-0423 |
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PMID:10590799 |
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no |
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refbase @ user @ |
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1927 |
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Cameron, E.Z.; Stafford, K.J.; Linklater, W.L.; Veltman, C.J. |
| Title |
Suckling behaviour does not measure milk intake in horses, Equus caballus |
Type |
Journal Article |
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1999 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
57 |
Issue |
3 |
Pages |
673-678 |
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Studies of parental investment in mammals have frequently used suckling behaviour to estimate energy transfer from mother to offspring, and consequently to measure maternal input. Such studies assume that the more an offspring sucks, the more milk it will receive. This assumption has been questioned, and a review of the literature found little support for it. To test if suckling behaviour provided an accurate index of milk or energy intake we used a radioactive isotope technique to label the milk of thoroughbred mares and to measure milk transfer to foals. We found no significant linear relationship between usual measures of suckling behaviour and milk or energy intake. No behaviours associated with suckling nor with characteristics of mares and foals improved the relationship; only the number of butts associated with each suck episode even approached significance. If we had used suckling behaviour to test theories on differential maternal investment our conclusions would have been in error. For example, female foals tended to suck for longer than males did but there was no difference in the amount of milk transferred. Consequently, we show that measures of suckling behaviour do not adequately predict milk intake in the domestic horse and we suggest that conclusions about differential maternal investment in mammals based on suckling behaviour are likely to be in error. Copyright 1999 The Association for the Study of Animal Behaviour. |
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Ecology Group, Institute of Natural Resources, Massey University |
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0003-3472 |
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PMID:10196058 |
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no |
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refbase @ user @ |
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418 |
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Parr, L.A.; de Waal, F.B. |
| Title |
Visual kin recognition in chimpanzees |
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1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
399 |
Issue |
6737 |
Pages |
647-648 |
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Animals; *Behavior, Animal; Face; Female; Male; Pan troglodytes/*physiology |
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0028-0836 |
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PMID:10385114 |
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no |
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refbase @ user @ |
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195 |
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