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Author |
Gilbert, B.K.; Hailman, J.P. |
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Title  |
Uncertainty of leadership-rank in fallow deer |
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Journal Article |
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Year |
1966 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
209 |
Issue |
5027 |
Pages |
1041-1042 |
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Keywords |
Animals; Artiodactyla; *Behavior, Animal; Female; *Leadership; Pregnancy |
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0028-0836 |
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PMID:5927524 |
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2057 |
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Author |
OUSTALET E |
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Title |
Une nouvelle espèce de zèbre, |
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Journal Article |
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Year |
1882 |
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La Nature |
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Volume |
10 |
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12-14 |
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from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1444 |
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Author |
Matsuzawa, T. |
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Title |
Use of numbers by a chimpanzee |
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Journal Article |
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Year |
1985 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
315 |
Issue |
6014 |
Pages |
57-59 |
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Keywords |
Animals; Behavior, Animal/physiology; Cognition; Female; Mathematics; Pan troglodytes/*physiology |
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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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0028-0836 |
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Notes |
PMID:3990808 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2793 |
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Author |
Ramsden, S.; Richardson, F.M.; Josse, G.; Thomas, M.S.C.; Ellis, C.; Shakeshaft, C.; Seghier, M.L.; Price, C.J. |
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Title |
Verbal and non-verbal intelligence changes in the teenage brain |
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Journal Article |
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2011 |
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Nature |
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Volume |
advance online publication |
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Abstract |
Intelligence quotient (IQ) is a standardized measure of human intellectual capacity that takes into account a wide range of cognitive skills1. IQ is generally considered to be stable across the lifespan, with scores at one time point used to predict educational achievement and employment prospects in later years1. Neuroimaging allows us to test whether unexpected longitudinal fluctuations in measured IQ are related to brain development. Here we show that verbal and non-verbal IQ can rise or fall in the teenage years, with these changes in performance validated by their close correlation with changes in local brain structure. A combination of structural and functional imaging showed that verbal IQ changed with grey matter in a region that was activated by speech, whereas non-verbal IQ changed with grey matter in a region that was activated by finger movements. By using longitudinal assessments of the same individuals, we obviated the many sources of variation in brain structure that confound cross-sectional studies. This allowed us to dissociate neural markers for the two types of IQ and to show that general verbal and non-verbal abilities are closely linked to the sensorimotor skills involved in learning. More generally, our results emphasize the possibility that an individual’s intellectual capacity relative to their peers can decrease or increase in the teenage years. This would be encouraging to those whose intellectual potential may improve, and would be a warning that early achievers may not maintain their potential. |
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Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. |
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1476-4687 |
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10.1038/nature10514 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5422 |
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Author |
Moon, C.; Baldridge, M.T.; Wallace, M.A.; Burnham, C.-A.D.; Virgin, H.W.; Stappenbeck, T.S. |
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Title |
Vertically transmitted faecal IgA levels determine extra-chromosomal phenotypic variation |
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Journal Article |
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Year |
2015 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
521 |
Issue |
7550 |
Pages |
90-93 |
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Keywords |
Phenotype |
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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. |
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Department of Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri 63110, USA. |
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eng |
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0028-0836 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
6005 |
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Author |
Parr, L.A.; de Waal, F.B. |
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Title |
Visual kin recognition in chimpanzees |
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Year |
1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
399 |
Issue |
6737 |
Pages |
647-648 |
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Keywords |
Animals; *Behavior, Animal; Face; Female; Male; Pan troglodytes/*physiology |
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0028-0836 |
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Notes |
PMID:10385114 |
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no |
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Call Number |
refbase @ user @ |
Serial |
195 |
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Author |
Dreber, A.; Rand, D.G.; Fudenberg, D.; Nowak, M.A. |
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Title |
Winners don/'t punish |
Type |
Journal Article |
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Year |
2008 |
Publication |
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Abbreviated Journal |
Nature |
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Volume |
452 |
Issue |
7185 |
Pages |
348-351 |
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Abstract |
A key aspect of human behaviour is cooperation1, 2, 3, 4, 5, 6, 7. We tend to help others even if costs are involved. We are more likely to help when the costs are small and the benefits for the other person significant. Cooperation leads to a tension between what is best for the individual and what is best for the group. A group does better if everyone cooperates, but each individual is tempted to defect. Recently there has been much interest in exploring the effect of costly punishment on human cooperation8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23. Costly punishment means paying a cost for another individual to incur a cost. It has been suggested that costly punishment promotes cooperation even in non-repeated games and without any possibility of reputation effects10. But most of our interactions are repeated and reputation is always at stake. Thus, if costly punishment is important in promoting cooperation, it must do so in a repeated setting. We have performed experiments in which, in each round of a repeated game, people choose between cooperation, defection and costly punishment. In control experiments, people could only cooperate or defect. Here we show that the option of costly punishment increases the amount of cooperation but not the average payoff of the group. Furthermore, there is a strong negative correlation between total payoff and use of costly punishment. Those people who gain the highest total payoff tend not to use costly punishment: winners don't punish. This suggests that costly punishment behaviour is maladaptive in cooperation games and might have evolved for other reasons. |
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Nature Publishing Group |
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0028-0836 |
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10.1038/nature06723 |
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Equine Behaviour @ team @ |
Serial |
4406 |
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Author |
Wolf, M.; van Doorn, G.S.; Leimar, O.; Weissing, F.J. |
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Title |
Wolf et al. reply |
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Journal Article |
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Year |
2007 |
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Nature |
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Volume |
450 |
Issue |
7167 |
Pages |
E5-E6 |
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Nature Publishing Group |
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0028-0836 |
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10.1038/nature06327 |
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Equine Behaviour @ team @ |
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4297 |
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