Records |
Author |
Tebbich, S.; Bshary, R.; Grutter, A.S. |
Title |
Cleaner fish Labroides dimidiatus recognise familiar clients |
Type |
Journal Article |
Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
5 |
Issue |
3 |
Pages |
139-145 |
Keywords |
Adaptation, Physiological; Animals; *Evolution; *Fishes; Motivation; *Recognition (Psychology); Social Behavior; Visual Perception |
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. |
Address |
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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no |
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Equine Behaviour @ team @ |
Serial |
2599 |
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Author |
Call, J. |
Title |
A fish-eye lens for comparative studies: broadening the scope of animal cognition |
Type |
Journal Article |
Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
5 |
Issue |
1 |
Pages |
15-16 |
Keywords |
Animals; Behavior, Animal/physiology; Cognition/*physiology; Fishes/*physiology; Species Specificity |
Abstract |
? is the article no longer available? |
Address |
call@eva.mpg.de |
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1435-9448 |
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PMID:11957396 |
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no |
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Equine Behaviour @ team @ |
Serial |
2616 |
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Author |
Bshary, R.; Wickler, W.; Fricke, H. |
Title |
Fish cognition: a primate's eye view |
Type |
Journal Article |
Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
5 |
Issue |
1 |
Pages |
1-13 |
Keywords |
Animals; Cognition/*physiology; Evolution; Fishes/*physiology; Intelligence; Learning; Primates/*physiology; Social Behavior |
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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Equine Behaviour @ team @ |
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2617 |
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Author |
Grosenick, L.; Clement, T.S.; Fernald, R.D. |
Title |
Fish can infer social rank by observation alone |
Type |
Journal Article |
Year |
2007 |
Publication |
Nature |
Abbreviated Journal |
Nature |
Volume |
445 |
Issue |
7126 |
Pages |
429-432 |
Keywords |
Aggression/physiology; Animals; Cognition/*physiology; Female; Fishes/*physiology; Learning/*physiology; Male; Models, Biological; *Social Dominance; Territoriality |
Abstract |
Transitive inference (TI) involves using known relationships to deduce unknown ones (for example, using A > B and B > C to infer A > C), and is thus essential to logical reasoning. First described as a developmental milestone in children, TI has since been reported in nonhuman primates, rats and birds. Still, how animals acquire and represent transitive relationships and why such abilities might have evolved remain open problems. Here we show that male fish (Astatotilapia burtoni) can successfully make inferences on a hierarchy implied by pairwise fights between rival males. These fish learned the implied hierarchy vicariously (as 'bystanders'), by watching fights between rivals arranged around them in separate tank units. Our findings show that fish use TI when trained on socially relevant stimuli, and that they can make such inferences by using indirect information alone. Further, these bystanders seem to have both spatial and featural representations related to rival abilities, which they can use to make correct inferences depending on what kind of information is available to them. Beyond extending TI to fish and experimentally demonstrating indirect TI learning in animals, these results indicate that a universal mechanism underlying TI is unlikely. Rather, animals probably use multiple domain-specific representations adapted to different social and ecological pressures that they encounter during the course of their natural lives. |
Address |
Department of Biological Sciences, Stanford University, Stanford, California, 94305, USA. logang@stanford.edu |
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1476-4687 |
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PMID:17251980 |
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refbase @ user @ |
Serial |
600 |
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