| Records |
Author  |
Matsuzawa, T. |
| Title |
Use of numbers by a chimpanzee |
Type |
Journal Article |
| Year |
1985 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
315 |
Issue |
6014 |
Pages |
57-59 |
| Keywords |
Animals; Behavior, Animal/physiology; Cognition; Female; Mathematics; Pan troglodytes/*physiology |
| Abstract |
Recent studies have examined linguistic abilities in apes. However, although human mathematical abilities seem to be derived from the same foundation as those in language, we have little evidence for mathematical abilities in apes (but for exceptions see refs 7-10). In the present study, a 5-yr-old female chimpanzee (Pan troglodytes), 'Ai', was trained to use Arabic numerals to name the number of items in a display. Ai mastered numerical naming from one to six and was able to name the number, colour and object of 300 types of samples. Although no particular sequence of describing samples was required, the chimpanzee favoured two sequences (colour/object/number and object/colour/number). The present study demonstrates that the chimpanzee was able to describe the three attributes of the sample items and spontaneously organized the 'word order'. |
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| Language |
English |
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| ISSN |
0028-0836 |
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Conference |
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| Notes |
PMID:3990808 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2793 |
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| Author |
Maynard Smith, J.; Price, G.R. |
| Title |
The Logic of Animal Conflict |
Type |
Journal Article |
| Year |
1973 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
246 |
Issue |
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Pages |
15-18 |
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Conference |
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| Notes |
10.1038/246015a0 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4844 |
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| Author |
McElreath, R.; Luttbeg, B.; Fogarty, S.P.; Brodin, T.; Sih, A. |
| Title |
Evolution of animal personalities |
Type |
Journal Article |
| Year |
2007 |
Publication |
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Abbreviated Journal |
Nature |
| Volume |
450 |
Issue |
7167 |
Pages |
E5-E5 |
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| Publisher |
Nature Publishing Group |
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| ISSN |
0028-0836 |
ISBN |
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| Notes |
10.1038/nature06326 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4295 |
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| Author |
McGonigle, B. |
| Title |
Can apes learn to count? |
Type |
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| Year |
1985 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
315 |
Issue |
6014 |
Pages |
16-17 |
| Keywords |
Animals; Behavior, Animal/physiology; Cognition; Pan troglodytes/*physiology |
| Abstract |
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English |
Summary Language |
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| ISSN |
0028-0836 |
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| Notes |
PMID:3990806 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2794 |
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| Author |
Milinski, M.; Rockenbach, B. |
| Title |
Human behaviour: Punisher pays |
Type |
Journal Article |
| Year |
2008 |
Publication |
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Abbreviated Journal |
Nature |
| Volume |
452 |
Issue |
7185 |
Pages |
297-298 |
| Keywords |
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| Abstract |
The tendency of humans to punish perceived free-loaders, even at a cost to themselves, is an evolutionary puzzle: punishers perish, and those who benefit the most are those who have never punished at all.
Humans are champions of cooperation. Reciprocity – the idea that, if I help you this time, you'll help me next time1 – is a secret of our success. |
| Address |
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| Publisher |
Nature Publishing Group |
Place of Publication |
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Edition |
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| ISSN |
0028-0836 |
ISBN |
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Conference |
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| Notes |
10.1038/452297a |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4405 |
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| Author |
Moon, C.; Baldridge, M.T.; Wallace, M.A.; Burnham, C.-A.D.; Virgin, H.W.; Stappenbeck, T.S. |
| Title |
Vertically transmitted faecal IgA levels determine extra-chromosomal phenotypic variation |
Type |
Journal Article |
| Year |
2015 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
521 |
Issue |
7550 |
Pages |
90-93 |
| Keywords |
Phenotype |
| Abstract |
The proliferation of genetically modified mouse models has exposed phenotypic variation between investigators and institutions that has been challenging to control1-5. In many cases, the microbiota is the presumed culprit of the variation. Current solutions to account for phenotypic variability include littermate and maternal controls or defined microbial consortia in gnotobiotic mice6,7. In conventionally raised mice, the microbiome is transmitted from the dam2,8,9. Here we show that microbially–driven dichotomous fecal IgA levels in WT mice within the same facility mimic the effects of chromosomal mutations. We observed in multiple facilities that vertically-transmissible bacteria in IgA-Low mice dominantly lowered fecal IgA levels in IgA-High mice after cohousing or fecal transplantation. In response to injury, IgA-Low mice showed increased damage that was transferable by fecal transplantation and driven by fecal IgA differences. We found that bacteria from IgA-Low mice degraded the secretory component (SC) of SIgA as well as IgA itself. These data indicate that phenotypic comparisons between mice must take into account the non-chromosomal hereditary variation between different breeders. We propose fecal IgA as one marker of microbial variability and conclude that cohousing and/or fecal transplantation enables analysis of progeny from different dams. |
| Address |
Department of Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri 63110, USA. |
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| Language |
eng |
Summary Language |
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Original Title |
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0028-0836 |
ISBN |
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| Notes |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6005 |
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| Author |
Nagy, M.; Akos, Z.; Biro, D.; Vicsek, T. |
| Title |
Hierarchical group dynamics in pigeon flocks |
Type |
Journal Article |
| Year |
2010 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
464 |
Issue |
7290 |
Pages |
890-893 |
| Keywords |
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| Abstract |
Animals that travel together in groups display a variety of fascinating motion patterns thought to be the result of delicate local interactions among group members1, 2, 3. Although the most informative way of investigating and interpreting collective movement phenomena would be afforded by the collection of high-resolution spatiotemporal data from moving individuals, such data are scarce4, 5, 6, 7 and are virtually non-existent for long-distance group motion within a natural setting because of the associated technological difficulties8. Here we present results of experiments in which track logs of homing pigeons flying in flocks of up to 10 individuals have been obtained by high-resolution lightweight GPS devices and analysed using a variety of correlation functions inspired by approaches common in statistical physics. We find a well-defined hierarchy among flock members from data concerning leading roles in pairwise interactions, defined on the basis of characteristic delay times between birds’ directional choices. The average spatial position of a pigeon within the flock strongly correlates with its place in the hierarchy, and birds respond more quickly to conspecifics perceived primarily through the left eye—both results revealing differential roles for birds that assume different positions with respect to flock-mates. From an evolutionary perspective, our results suggest that hierarchical organization of group flight may be more efficient than an egalitarian one, at least for those flock sizes that permit regular pairwise interactions among group members, during which leader–follower relationships are consistently manifested. |
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| Publisher |
Macmillan Publishers Limited. All rights reserved |
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0028-0836 |
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| Notes |
10.1038/nature08891 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5111 |
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| Author |
Novacek, M.J. |
| Title |
Mammalian phylogeny: shaking the tree |
Type |
Journal Article |
| Year |
1992 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
356 |
Issue |
6365 |
Pages |
121-125 |
| Keywords |
Animals; Evolution; Fossils; Mammals/classification/*genetics; *Phylogeny |
| Abstract |
Recent palaeontological discoveries and the correspondence between molecular and morphological results provide fresh insight on the deep structure of mammalian phylogeny. This new wave of research, however, has yet to resolve some important issues. |
| Address |
American Museum of Natural History, New York 10024 |
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English |
Summary Language |
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Original Title |
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Edition |
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0028-0836 |
ISBN |
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| Notes |
PMID:1545862 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3546 |
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| Author |
Nowak, M.A.; Sigmund, K. |
| Title |
Tit for tat in heterogeneous populations |
Type |
Journal Article |
| Year |
1992 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
355 |
Issue |
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Pages |
250-253 |
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Expedition |
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Conference |
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| Notes |
10.1038/355250a0 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4842 |
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| Author |
Ohtsuki, H.; Iwasa, Y.; Nowak, M.A. |
| Title |
Indirect reciprocity provides only a narrow margin of efficiency for costly punishment |
Type |
Journal Article |
| Year |
2009 |
Publication |
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Abbreviated Journal |
Nature |
| Volume |
457 |
Issue |
7225 |
Pages |
79-82 |
| Keywords |
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| Abstract |
Indirect reciprocity1, 2, 3, 4, 5 is a key mechanism for the evolution of human cooperation. Our behaviour towards other people depends not only on what they have done to us but also on what they have done to others. Indirect reciprocity works through reputation5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17. The standard model of indirect reciprocity offers a binary choice: people can either cooperate or defect. Cooperation implies a cost for the donor and a benefit for the recipient. Defection has no cost and yields no benefit. Currently there is considerable interest in studying the effect of costly (or altruistic) punishment on human behaviour18, 19, 20, 21, 22, 23, 24, 25. Punishment implies a cost for the punished person. Costly punishment means that the punisher also pays a cost. It has been suggested that costly punishment between individuals can promote cooperation. Here we study the role of costly punishment in an explicit model of indirect reciprocity. We analyse all social norms, which depend on the action of the donor and the reputation of the recipient. We allow errors in assigning reputation and study gossip as a mechanism for establishing coherence. We characterize all strategies that allow the evolutionary stability of cooperation. Some of those strategies use costly punishment; others do not. We find that punishment strategies typically reduce the average payoff of the population. Consequently, there is only a small parameter region where costly punishment leads to an efficient equilibrium. In most cases the population does better by not using costly punishment. The efficient strategy for indirect reciprocity is to withhold help for defectors rather than punishing them. |
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| Publisher |
Macmillan Publishers Limited. All rights reserved |
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Edition |
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| ISSN |
0028-0836 |
ISBN |
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Conference |
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| Notes |
10.1038/nature07601 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4705 |
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