No evidence for general intelligence in a fish
| Autor: | Mélisande Aellen, Redouan Bshary, Judith M. Burkart |
|---|---|
| Přispěvatelé: | University of Zurich, Aellen, Mélisande |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
10207 Department of Anthropology
Elementary cognitive task Ecology 300 Social sciences sociology & anthropology Evolution Flexibility (personality) Cognition Biology Cleaner fish biology.organism_classification 1105 Ecology Evolution Behavior and Systematics Behavior and Systematics Evolutionary biology Ectotherm Brain size Animal Science and Zoology Labroides 1103 Animal Science and Zoology Ecology Evolution Behavior and Systematics Organism |
| DOI: | 10.5167/uzh-217842 |
| Popis: | Differences in human general intelligence or reasoning ability can be quantified with the psychometric factorg, because individual performance across cognitive tasks is positively correlated.galso emerges in mammals and birds, is correlated with brain size and may similarly reflect general reasoning ability and behavioural flexibility in these species. To exclude the alternative that these positive cross-correlations may merely reflect the general biological quality of an organism or an inevitable by-product of having brains it is paramount to provide solid evidence for the absence ofgin at least some species. Here, we show that wild-caught cleaner fishLabroides dimidiatus, a fish species otherwise known for its highly sophisticated social behaviour, completely lacksgwhen tested on ecologically non-relevant tasks. Moreover, performance in these experiments was not or negatively correlated with an ecologically relevant task, and in none of the tasks did fish caught from a high population density site outperform fish from a low-density site.gis thus unlikely a default result of how brains are designed, and not an automatic consequence of variation in social complexity. Rather, the results may reflect thatgrequires a minimal brain size, and thus explain the conundrum why the average mammal or bird has a roughly 10 times larger brain relative to body size than ectotherms. Ectotherm brains and cognition may therefore be organized in fundamentally different ways compared to endotherms. |
| Databáze: | OpenAIRE |
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