| Records |
| Author |
Barton, N. |
| Title |
Evolutionary biology: The geometry of adaptation |
Type |
Journal Article |
| Year |
1998 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
395 |
Issue |
6704 |
Pages |
751-752 |
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| ISSN |
0028-0836 |
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Notes  |
10.1038/27338 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5469 |
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| Author |
Watts, D.J.; Strogatz, S.H. |
| Title |
Collective dynamics of /`small-world/' networks |
Type |
Journal Article |
| Year |
1998 |
Publication |
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Abbreviated Journal |
Nature |
| Volume |
393 |
Issue |
6684 |
Pages |
440-442 |
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| Abstract |
Networks of coupled dynamical systems have been used to model biological oscillators Josephson junction arrays excitable media, neural networks spatial games11, genetic control networks12 and many other self-organizing systems. Ordinarily, the connection topology is assumed to be either completely regular or completely random. But many biological, technological and social networks lie somewhere between these two extremes. Here we explore simple models of networks that can be tuned through this middle ground: regular networks 'rewired' to introduce increasing amounts of disorder. We find that these systems can be highly clustered, like regular lattices, yet have small characteristic path lengths, like random graphs. We call them 'small-world' networks, by analogy with the small-world phenomenon (popularly known as six degrees of separation). The neural network of the worm Caenorhabditis elegans, the power grid of the western United States, and the collaboration graph of film actors are shown to be small-world networks. Models of dynamical systems with small-world coupling display enhanced signal-propagation speed, computational power, and synchronizability. In particular, infectious diseases spread more easily in small-world networks than in regular lattices. |
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0028-0836 |
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| Notes |
10.1038/30918 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4989 |
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| Author |
Foster, K.R.; Ratnieks, F.L.W. |
| Title |
Social insects: Facultative worker policing in a wasp |
Type |
Journal Article |
| Year |
2000 |
Publication |
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Abbreviated Journal |
Nature |
| Volume |
407 |
Issue |
6805 |
Pages |
692-693 |
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| Abstract |
Kin-selection theory predicts that in social-insect colonies where the queen has mated multiple times, the workers will enforce cooperation by policing each other's reproduction1, 2, 3, 4. We have discovered a species, the wasp Dolichovespula saxonica, in which some queens mate once and others mate many times, and in which workers frequently attempt reproduction, allowing this prediction to be tested directly. We find that multiple mating by the queen leads to mutual policing by workers, whereas single mating does not. |
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Macmillan Magazines Ltd. |
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0028-0836 |
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10.1038/35037665 |
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no |
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Equine Behaviour @ team @ |
Serial |
4940 |
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| Author |
Marean, C.W.; Gifford-Gonzalez, D. |
| Title |
Late Quaternary extinct ungulates of East Africa and palaeoenvironmental implications |
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Journal Article |
| Year |
1991 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
350 |
Issue |
6317 |
Pages |
418-420 |
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| Abstract |
UNGULATE communities of two East African savannas, the Serengeti and Athi-Kapiti Plains, are dominated by wildebeest (Connochaetes taurinus) supplemented by zebra (Equus burchelli), topi (Damaliscus lunatus), hartebeest (Alcelaphus buselaphus), buffalo (Syncerus caffer) eland (Taurotragus oryx) and gazelles (Gazella grand and G. thomsoni)1-3. Before this research, little was known of East African large mammal communities in the Late Pleistocene and early to middle Holocene. We document an extinct impala-sized alcelaphine antelope that is numerically dominant in Late Pleistocene archaeofaunal assemblages from the Athi-Kapiti Plains. The extinct giant buffalo Pelorovis antiquus is present, and a number of arid-adapted regionally extinct species are common. The small alcelaphine is rare in northern Tanzania, but regionally extinct arid-adapted species are present in Late Pleistocene deposits. These data indicate that as recently as 12,000 years ago, the large mammal community structure of East African savannas was very different and dry grasslands and arid-adapted ungulates expanded at least as far south as northern Tanzania during the Last Glacial Maximum. |
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10.1038/350418a0 |
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no |
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Equine Behaviour @ team @ |
Serial |
2345 |
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| Author |
Potts, W.K.; Manning, C.J.; Wakeland, E.K. |
| Title |
Mating patterns in seminatural populations of mice influenced by MHC genotype |
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Journal Article |
| Year |
1991 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
352 |
Issue |
6336 |
Pages |
619-621 |
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| Notes |
10.1038/352619a0 |
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no |
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Equine Behaviour @ team @ |
Serial |
5424 |
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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 |
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Pages |
250-253 |
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| Notes |
10.1038/355250a0 |
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no |
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Equine Behaviour @ team @ |
Serial |
4842 |
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| Author |
Reeve, H.K. |
| Title |
Queen activation of lazy workers in colonies of the eusocial naked mole-rat |
Type |
Journal Article |
| Year |
1992 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
358 |
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Pages |
147-149 |
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10.1038/358147a0 |
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no |
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Equine Behaviour @ team @ |
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4921 |
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| Author |
Clutton-Brock, T.H.; Parker, G.A. |
| Title |
Punishment in animal societies |
Type |
Journal Article |
| Year |
1995 |
Publication |
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Nature |
| Volume |
373 |
Issue |
6511 |
Pages |
209-216 |
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Although positive reciprocity (reciprocal altruism) has been a focus of interest in evolutionary biology, negative reciprocity (retaliatory infliction of fitness reduction) has been largely ignored. In social animals, retaliatory aggression is common, individuals often punish other group members that infringe their interests, and punishment can cause subordinates to desist from behaviour likely to reduce the fitness of dominant animals. Punishing strategies are used to establish and maintain dominance relationships, to discourage parasites and cheats, to discipline offspring or prospective sexual partners and to maintain cooperative behaviour. |
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10.1038/373209a0 |
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no |
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Equine Behaviour @ team @ |
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4838 |
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| Author |
Milinski, M.; Rockenbach, B. |
| Title |
Human behaviour: Punisher pays |
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Journal Article |
| Year |
2008 |
Publication |
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Nature |
| Volume |
452 |
Issue |
7185 |
Pages |
297-298 |
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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. |
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Nature Publishing Group |
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0028-0836 |
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10.1038/452297a |
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no |
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Equine Behaviour @ team @ |
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4405 |
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| Author |
Weissing, F.J. |
| Title |
Animal behaviour: Born leaders |
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Journal Article |
| Year |
2011 |
Publication |
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Abbreviated Journal |
Nature |
| Volume |
474 |
Issue |
7351 |
Pages |
288-289 |
| Keywords |
* Animal behaviour * Evolution * Psychology |
| Abstract |
Social animals face a dilemma. To reap the benefits of group living, they have to stay together. However, individuals differ in their preferences as to where to go and what to do next. If all individuals follow their own preferences, group coherence is undermined, resulting in an outcome that is unfavourable for everyone. Neglecting one's own preferences and following a leader is one way to resolve this coordination problem. But what attributes make an individual a 'leader'? A modelling study by Johnstone and Manica1 illuminates this question. |
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Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. |
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0028-0836 |
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10.1038/474288a |
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no |
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Equine Behaviour @ team @ |
Serial |
5396 |
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