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Heritabilities and co-variation among cognitive traits in red junglefowl

Published on Sep 26, 2018in Philosophical Transactions of the Royal Society B6.139
· DOI :10.1098/rstb.2017.0285
Enrico Sorato8
Estimated H-index: 8
(Linköping University),
Josefina Zidar9
Estimated H-index: 9
(Linköping University)
+ 2 AuthorsHanne Løvlie18
Estimated H-index: 18
(Linköping University)
Sources
Abstract
Natural selection can act on between-individual variation in cognitive abilities, yet evolutionary responses depend on the presence of underlying genetic variation. It is, therefore, crucial to det...
  • References (95)
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Cognitive abilities probably evolve through natural selection if they provide individuals with fitness benefits. A growing number of studies demonstrate a positive relationship between performance ...
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Cognitive processes are often biased by emotions. In humans, affective disorders are accompanied by pessimistic judgement, while optimistic judgement is linked to emotional stability. Similar to humans, animals tend to interpret ambiguous stimuli negatively after experiencing stressful events, although the long-lasting impact on judgement bias has rarely been investigated. We measure judgement bias in female chicks (Gallus gallus domesticus) after exposure to cold stress, and before and after ex...
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Pessimistic judgment biases, whereby humans or non-human animals interpret ambiguous information negatively, are hypothesised to be one of the suite of adaptive changes that comprise the vertebrate stress response. To test this hypothesis, we asked whether experimentally elevating levels of the glucocorticoid stress hormone, corticosterone, in broiler chickens produced a pessimistic judgment bias. We trained young chickens to discriminate a stimulus (paper cone) placed at two locations in an are...
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Individual animals vary in their behaviour and reactions to novel situations. These differences may extend to differences in cognition among individuals. We tested twenty-six horses for their ability to detour around symmetric and asymmetric obstacles. All of the animals were able to get around the barrier to reach a food target, but varied in their approach. Some horses moved slowly but were more accurate in choosing the shortest way. Other horses acted quickly, consistently detoured in the sam...
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#1Rachael C. Shaw (Victoria University of Wellington)H-Index: 12
#2Martin Schmelz (University of Vienna)H-Index: 8
For the past two decades, behavioural ecologists have documented consistent individual differences in behavioural traits within species and found evidence for animal “personality”. It is only relatively recently, however, that increasing numbers of researchers have begun to investigate individual differences in cognitive ability within species. It has been suggested that cognitive test batteries may provide an ideal tool for this growing research endeavour. In fact, cognitive test batteries have...
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The ability to associatively learn is highly conserved, having been evidenced in all bilateral animals tested to date. This general cognitive process has been shown to play a role in a wide diversity of behaviours, including interactions with predators, prey, rivals and mates. Learning is thus expected to be essential for survival and reproduction in many species, but because of associated costs, it is also predicted to be fine-tuned to prevailing conditions by selective processes. Considering t...
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There is an increased focus in biology on consistent behavioural variation. Several terms are used to describe this variation, including animal personality and coping style. Both terms describe bet ...
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A recent paper by Chen et al. (2019, Science, 363 (6423), 166–167) found that female budgerigars, Melopsittacus undulatus, show a preference for males that are successful problem solvers. Is this result sufficient to conclude that mate choice influences the evolution of cognitive abilities? Here, we consider what we currently know about the relationship between problem solving and cognition. We argue that it is premature to conclude, based on these findings, that cognitive abilities have evolved...
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: Intra-species cognitive variation is commonly observed, but explanations for why individuals within a species differ in cognition are still understudied and not yet clear. Cognitive processes are likely influenced by genetic differences, with genes in the monoaminergic systems predicted to be important. To explore the potential role of these genes in association with individual variation in cognition, we exposed red junglefowl (Gallus gallus) chicks to behavioural assays measuring variation in...
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