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Author |
Reluga, T.C.; Viscido, S. |
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Title |
Simulated evolution of selfish herd behavior |
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Journal Article |
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Year |
2005 |
Publication |
Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
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Volume |
234 |
Issue |
2 |
Pages |
213-225 |
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Keywords |
Selfish herd; Behavior; Evolution; Predation risk |
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Abstract |
Single species aggregations are a commonly observed phenomenon. One potential explanation for these aggregations is provided by the selfish herd hypothesis, which states that aggregations result from individual efforts to reduce personnel predation risk at the expense of group-mates. Not all movement rules based on the selfish herd hypothesis are consistent with observed animal behavior. Previous work has shown that herd-like aggregations are not generated by movement rules limited to local interactions between nearest neighbors. Instead, rules generating realistic herds appear to require delocalized interactions. To date, it has been an open question whether or not the necessary delocalization can emerge from local interactions under natural selection. To address this question, we study an individual-based model with a single quantitative genetic trait that controls the influence of neighbors as a function of distance. The results indicate that predation-based selection can increase the influence of distant neighbors relative to near neighbors. Our results lend support for the idea that selfish herd behavior can arise from localized movement rules under natural selection. |
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refbase @ user @ |
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553 |
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Author |
Tebbich, S.; Bshary, R.; Grutter, A.S. |
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Title |
Cleaner fish Labroides dimidiatus recognise familiar clients |
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Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
3 |
Pages |
139-145 |
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Keywords |
Adaptation, Physiological; Animals; *Evolution; *Fishes; Motivation; *Recognition (Psychology); Social Behavior; Visual Perception |
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Abstract |
Individual recognition has been attributed a crucial role in the evolution of complex social systems such as helping behaviour and cooperation. A classical example for interspecific cooperation is the mutualism between the cleaner fish Labroides dimidiatus and its client reef fish species. For stable cooperation to evolve, it is generally assumed that partners interact repeatedly and remember each other's past behaviour. Repeated interactions may be achieved by site fidelity or individual recognition. However, as some cleaner fish have more than 2,300 interactions per day with various individuals per species and various species of clients, basic assumptions of cooperation theory might be violated in this mutualism. We tested the cleaner L. dimidiatus and its herbivorous client, the surgeon fish Ctenochaetus striatus, for their ability to distinguish between a familiar and an unfamiliar partner in a choice experiment. Under natural conditions, cleaners and clients have to build up their relationship, which is probably costly for both. We therefore predicted that both clients and cleaners should prefer the familiar partner in our choice experiment. We found that cleaners spent significantly more time near the familiar than the unfamiliar clients in the first 2 minutes of the experiment. This indicates the ability for individual recognition in cleaners. In contrast, the client C. striatus showed no significant preference. This could be due to a sampling artefact, possibly due to a lack of sufficient motivation. Alternatively, clients may not need to recognise their cleaners but instead remember the defined territories of L. dimidiatus to achieve repeated interactions with the same individual. |
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Max Planck Institute for Behaviour and Physiology, 82319 Seewiesen, Germany. tebbich@ss20.mpi-seewiesen.mpg.de |
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1435-9448 |
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PMID:12357286 |
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Equine Behaviour @ team @ |
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2599 |
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Call, J. |
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Title |
A fish-eye lens for comparative studies: broadening the scope of animal cognition |
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Journal Article |
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2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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5 |
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1 |
Pages |
15-16 |
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Keywords |
Animals; Behavior, Animal/physiology; Cognition/*physiology; Fishes/*physiology; Species Specificity |
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Abstract |
? is the article no longer available? |
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call@eva.mpg.de |
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1435-9448 |
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PMID:11957396 |
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Equine Behaviour @ team @ |
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2616 |
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Author |
Bshary, R.; Wickler, W.; Fricke, H. |
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Title |
Fish cognition: a primate's eye view |
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Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
1 |
Pages |
1-13 |
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Keywords |
Animals; Cognition/*physiology; Evolution; Fishes/*physiology; Intelligence; Learning; Primates/*physiology; Social Behavior |
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Abstract |
We provide selected examples from the fish literature of phenomena found in fish that are currently being examined in discussions of cognitive abilities and evolution of neocortex size in primates. In the context of social intelligence, we looked at living in individualized groups and corresponding social strategies, social learning and tradition, and co-operative hunting. Regarding environmental intelligence, we searched for examples concerning special foraging skills, tool use, cognitive maps, memory, anti-predator behaviour, and the manipulation of the environment. Most phenomena of interest for primatologists are found in fish as well. We therefore conclude that more detailed studies on decision rules and mechanisms are necessary to test for differences between the cognitive abilities of primates and other taxa. Cognitive research can benefit from future fish studies in three ways: first, as fish are highly variable in their ecology, they can be used to determine the specific ecological factors that select for the evolution of specific cognitive abilities. Second, for the same reason they can be used to investigate the link between cognitive abilities and the enlargement of specific brain areas. Third, decision rules used by fish could be used as 'null-hypotheses' for primatologists looking at how monkeys might make their decisions. Finally, we propose a variety of fish species that we think are most promising as study objects. |
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University of Cambridge, Department of Zoology, Downing Street, Cambridge CB2 3EJ, UK. rb286@cam.ac.uk |
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1435-9448 |
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PMID:11957395 |
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no |
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Equine Behaviour @ team @ |
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2617 |
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Author |
Dugatkin, L.A.; Godin, G.J. |
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Title |
Predator inspection, shoaling and foraging under predation hazard in the Trinidadian guppy,Poecilia reticulata |
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Journal Article |
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Year |
1992 |
Publication |
Environmental Biology of Fishes |
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Volume |
34 |
Issue |
3 |
Pages |
265-276 |
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Keywords |
Antipredation – Social group – Feeding – Predation risk – Trade-off – Fish |
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Abstract |
Guppies,Poecilia reticulata, living in stream pools in Trinidad, West Indies, approached a potential fish predator (a cichlid fish model) in a tentative, saltatory manner, mainly as singletons or in pairs. Such behavior is referred to as predator inspection behavior. Inspectors approached the trunk and tail of the predator model more frequently, more closely and in larger groups than they approached the predator's head, which is presumably the most dangerous area around the predator. However, guppies were not observed in significantly larger shoals in the stream when the predator model was present. In a stream enclosure, guppies inspected the predator model more frequently when it was stationary compared to when it was moving, and made closer inspections to the posterior regions of the predator than to its head. Therefore, the guppies apparently regarded the predator model as a potential threat and modified their behavior accordingly when inspecting it. Guppies exhibited a lower feeding rate in the presence of the predator, suggesting a trade-off between foraging gains and safety against predation. Our results further suggest that predator inspection behavior may account for some of this reduction in foraging. These findings are discussed in the context of the benefits and costs of predator inspection behavior. |
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Equine Behaviour @ team @ |
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2176 |
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Author |
Levin, L.E.; Grillet, M.E. |
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Title |
[Diversified leadership: a social solution of problems in schools of fish] |
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Journal Article |
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Year |
1988 |
Publication |
Acta Cientifica Venezolana |
Abbreviated Journal |
Acta Cient Venez |
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39 |
Issue |
2 |
Pages |
175-180 |
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Keywords |
Animals; Fishes; *Leadership; Reversal Learning/*physiology; *Social Behavior |
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Spanish |
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Liderazgo diversificado: una solucion social de problemas en el cardumen |
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0001-5504 |
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PMID:3251383 |
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2045 |
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Author |
Connor, R.C.; Wells, R.S.; Mann, J.; Read,A.J. |
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Title |
The bottlenose dolphin: Social relationships in a fission-fusion society. |
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Book Chapter |
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2000 |
Publication |
Cetacean Societies: Field Studies of Dolphins and Whales. |
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91-126 |
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cetacean social behavior, male alliance formation, most cetacean species, platanistid river dolphins, cetacean sociality, strategies and social bonds, female cetaceans, many cetologists, most mysticetes, sperm whale calves, passive fishing nets, variant whistles, historical whaling records, cetacean systematics, stable matrilineal groups, peak calving season, suction cup tags, mutualistic groups, cetacean vocalizations, focal animal studies, larger odontocetes, predictive signaling, individual cetaceans, sperm whale clicks, resident killer whales |
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Book Description
“Part review, part testament to extraordinary dedication, and part call to get involved, Cetacean Societies highlights the achievements of behavioral ecologists inspired by the challenges of cetaceans and committed to the exploration of a new world.”-from the preface by Richard Wrangham
Long-lived, slow to reproduce, and often hidden beneath the water's surface, whales and dolphins (cetaceans) have remained elusive subjects for scientific study even though they have fascinated humans for centuries. Until recently, much of what we knew about cetaceans came from commercial sources such as whalers and trainers for dolphin acts. Innovative research methods and persistent efforts, however, have begun to penetrate the depths to reveal tantalizing glimpses of the lives of these mammals in their natural habitats.
Cetacean Societies presents the first comprehensive synthesis and review of these new studies. Groups of chapters focus on the history of cetacean behavioral research and methodology; state-of-the-art reviews of information on four of the most-studied species: bottlenose dolphins, killer whales, sperm whales, and humpback whales; and summaries of major topics, including group living, male and female reproductive strategies, communication, and conservation drawn from comparative research on a wide range of species.
Written by some of the world's leading cetacean scientists, this landmark volume will benefit not just students of cetology but also researchers in other areas of behavioral and conservation ecology as well as anyone with a serious interest in the world of whales and dolphins.
Contributors are Robin Baird, Phillip Clapham, Jenny Christal, Richard Connor, Janet Mann, Andrew Read, Randall Reeves, Amy Samuels, Peter Tyack, Linda Weilgart, Hal Whitehead, Randall S. Wells, and Richard Wrangham. |
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University of Chicago Press |
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Chicago |
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Mann, J.;Connor, R.C.; Tyack, P.L.;Whitehead, H. |
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978-0226503417 |
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Equine Behaviour @ team @ |
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4427 |
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Author |
Nettle, D. |
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Title |
The evolution of personality variation in humans and other animals |
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Journal Article |
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Year |
2006 |
Publication |
The American Psychologist |
Abbreviated Journal |
Am Psychol |
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61 |
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6 |
Pages |
622-631 |
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Animals; Birds; *Evolution; Female; Fishes; Humans; Insects; Male; Personality/*genetics/*physiology |
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A comprehensive evolutionary framework for understanding the maintenance of heritable behavioral variation in humans is yet to be developed. Some evolutionary psychologists have argued that heritable variation will not be found in important, fitness-relevant characteristics because of the winnowing effect of natural selection. This article propounds the opposite view. Heritable variation is ubiquitous in all species, and there are a number of frameworks for understanding its persistence. The author argues that each of the Big Five dimensions of human personality can be seen as the result of a trade-off between different fitness costs and benefits. As there is no unconditionally optimal value of these trade-offs, it is to be expected that genetic diversity will be retained in the population. |
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University of Newcastle, Newcastle, United Kingdom. daniel.nettle@ncl.ac.uk |
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0003-066X |
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PMID:16953749 |
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Equine Behaviour @ team @ |
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4105 |
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Author |
Sovrano, V.A.; Bisazza, A.; Vallortigara, G. |
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Title |
How fish do geometry in large and in small spaces |
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Journal Article |
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Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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10 |
Issue |
1 |
Pages |
47-54 |
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Animals; *Association Learning; Color Perception; Cues; *Discrimination Learning; *Distance Perception; *Fishes; Male; Pattern Recognition, Visual; Social Environment; *Space Perception; Visual Perception |
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It has been shown that children and non-human animals seem to integrate geometric and featural information to different extents in order to reorient themselves in environments of different spatial scales. We trained fish (redtail splitfins, Xenotoca eiseni) to reorient to find a corner in a rectangular tank with a distinctive featural cue (a blue wall). Then we tested fish after displacement of the feature on another adjacent wall. In the large enclosure, fish chose the two corners with the feature, and also tended to choose among them the one that maintained the correct arrangement of the featural cue with respect to geometric sense (i.e. left-right position). In contrast, in the small enclosure, fish chose both the two corners with the features and the corner, without any feature, that maintained the correct metric arrangement of the walls with respect to geometric sense. Possible reasons for species differences in the use of geometric and non-geometric information are discussed. |
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Department of General Psychology, University of Padua, Via Venezia, 8, 35131, Padova, Italy. valeriaanna.sovrano@unipd.it |
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1435-9448 |
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PMID:16794851 |
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Equine Behaviour @ team @ |
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2462 |
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Author |
de Waal, F.B.M. |
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Title |
How animals do business |
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Journal Article |
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2005 |
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Scientific American |
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Sci Am |
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292 |
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4 |
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54-61 |
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Animals; Attitude; *Behavior, Animal; Cebus; Cooperative Behavior; *Economics; Emotions; Fishes; Food; Humans; Pan troglodytes; Papio; Social Behavior |
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Emory University, USA |
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0036-8733 |
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PMID:15915815 |
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refbase @ user @ |
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166 |
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