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Amodio, P.; Boeckle, M.; Schnell, A.K.; Ostojic, L.; Fiorito, G.; Clayton, N.S. |
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Title |
Grow Smart and Die Young: Why Did Cephalopods Evolve Intelligence? |
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2018 |
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Trends in Ecology & Evolution |
Abbreviated Journal |
Trends. Ecol. Evol. |
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Intelligence in large-brained vertebrates might have evolved through independent, yet similar processes based on comparable socioecological pressures and slow life histories. This convergent evolutionary route, however, cannot explain why cephalopods developed large brains and flexible behavioural repertoires: cephalopods have fast life histories and live in simple social environments. Here, we suggest that the loss of the external shell in cephalopods (i) caused a dramatic increase in predatory pressure, which in turn prevented the emergence of slow life histories, and (ii) allowed the exploitation of novel challenging niches, thus favouring the emergence of intelligence. By highlighting convergent and divergent aspects between cephalopods and large-brained vertebrates we illustrate how the evolution of intelligence might not be constrained to a single evolutionary route. |
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Elsevier |
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0169-5347 |
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doi: 10.1016/j.tree.2018.10.010 |
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Equine Behaviour @ team @ |
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6508 |
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Author |
Fiorito, G.; Biederman, G.B.; Davey, V.A.; Gherardi, F. |
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Title |
The role of stimulus preexposure in problem solving by Octopus vulgaris |
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Journal Article |
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Year |
1998 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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1 |
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2 |
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107-112 |
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Octopus vulgaris is able to open transparent glass jars closed with plastic plugs and containing live crabs. The decrease in performance times for removing the plug and seizing the prey with increasing experience of the task has been taken to indicate learning. However, octopuses' attack behaviors are typically slow and variable in novel environmental situations. In this study the role of preexposure to selected features of the problem-solving context was investigated. Although octopuses failed to benefit from greater familiarity with the training context or with selected elements of the task of solving the jar problem, the methodological strategies used are instructive in potentially clarifying the role of complex problem-solving behaviors in this species including stimulus preexposure and social learning. |
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Equine Behaviour @ team @ |
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3198 |
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Author |
Webster, S.; Fiorito, G. |
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Title |
Socially guided behaviour in non-insect invertebrates |
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2001 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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4 |
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2 |
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69-79 |
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A review of the past 50 years of literature on socially guided behaviour addresses two questions: (1) whether socially guided behaviour, which has traditionally been considered characteristic of vertebrates, is also found among non-insect invertebrates, and (2) to see whether our classification of socially guided behaviours in invertebrates matches, and thereby supports, A. Whiten and R. Ham's classification of vertebrate behaviours into two broad categories, social learning and social influence. We systematically reviewed the literature on socially guided behaviour in non-insect invertebrates to determine if social behaviours exist. Once this was established, we characterised our findings using 13 behavioural phenomena that are considered to be descriptive of socially guided behaviour. Using a multivariate technique, we then analysed the data to determine if our characterisation scheme produced a similar distribution to that presented by A. Whiten and R. Ham. Our results indicate that socially guided behaviours are present in invertebrates, and invertebrates can be placed into the previously established framework on vertebrate social behaviour. Further, our analysis reveals a prominent separation between representations of the social influence and social learning categories, thereby supporting the previously published framework on socially guided behaviour. |
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Equine Behaviour @ team @ |
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3210 |
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