Plasticity, stereotypy, intra-individual variability and personality: Handle with care

Japyassú, Hilton F.; Malange, J.

doi:10.1016/j.beproc.2014.09.016

Cited by 32 publications

(26 citation statements)

References 68 publications

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“…BCentral sniff^, as described inCasarrubea et al (2010) was the category more often observed.13. Scan cBScan^occurs when the individual directs its muzzle to the holes inspecting them but keeps itself distant from the holes (corners or borders).Dufty 1998), our results give support to the possibility that more stable behavioural features could underlie these abilities, even in the presence of behavioural plasticity (a within-individual measure that does not exclude the role of personality traits-seeJapyassú and Malange 2014). Species with enhanced levels of activity usually show high levels of exploratory behaviour, searching for shelter and new resources (neophilia), with fitness gains in the displacement to new areas…”

supporting

confidence: 77%

Personality and behavioural syndrome in Necromys lasiurus (Rodentia: Cricetidae): notes on dispersal and invasion processes

2016

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Recent studies showed that behavioural individual features are related to species invasion and occupation abilities. In particular, the recent literature on animal personality has pointed to a correlation between behavioural profiles and the success in different phases of the invasion. In the present study, we investigated personality traits in the Neotropical species Necromys lasiurus. This wild rodent is expanding its original distribution to disturbed areas in the Atlantic Forest biome in response to anthropogenic impacts, acting as an invasive species (broad sense). In order to evaluate personality, we performed three behavioural assays as follows: open field, aversive open field and holeboard field. We extracted three personality domains-activity, exploration, and neophiliausing principal component analysis. There was significant positive correlation between these personality domains characterising a behavioural syndrome. We discussed the implications of this behavioural profile to dispersal and potential invasion abilities in this species.

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confidence: 77%

Personality and behavioural syndrome in Necromys lasiurus (Rodentia: Cricetidae): notes on dispersal and invasion processes

2016

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“…For example, in Ward’s damselfish ( Pomacentrus wardi ), intra-individual variability in latency to leave shelter varies across individuals22. Such within-individual temporal variability in behaviour has been defined as intra-individual variability (IIV) or predictability2223. Whilst an individual’s personality type represents the average behaviour of an individual, such as being more aggressive, IIV is to show the variation in behaviour of the same individual, such as being more variable19.…”

mentioning

confidence: 99%

Predator personality and prey behavioural predictability jointly determine foraging performance

Chang

Teo

Norma‐Rashid

et al. 2017

Sci Rep

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Predator-prey interactions play important roles in ecological communities. Personality, consistent inter-individual differences in behaviour, of predators, prey or both are known to influence inter-specific interactions. An individual may also behave differently under the same situation and the level of such variability may differ between individuals. Such intra-individual variability (IIV) or predictability may be a trait on which selection can also act. A few studies have revealed the joint effect of personality types of both predators and prey on predator foraging performance. However, how personality type and IIV of both predators and prey jointly influence predator foraging performance remains untested empirically. Here, we addressed this using a specialized spider-eating jumping spider, Portia labiata (Salticidae), as the predator, and a jumping spider, Cosmophasis umbratica, as the prey. We examined personality types and IIVs of both P. labiata and C. umbratica and used their inter- and intra-individual behavioural variation as predictors of foraging performance (i.e., number of attempts to capture prey). Personality type and predictability had a joint effect on predator foraging performance. Aggressive predators performed better in capturing unpredictable (high IIV) prey than predictable (low IIV) prey, while docile predators demonstrated better performance when encountering predictable prey. This study highlights the importance of the joint effect of both predator and prey personality types and IIVs on predator-prey interactions.

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“…Variability in responses to TMS-based neuroplasticity interventions has been reported previously [31, 41, 50–53]. Several factors have been shown to contribute to this variability (see [54] for review), some of which were controlled in the current study.…”

Section: Discussionmentioning

confidence: 53%

Corticospinal Plasticity in Bilateral Primary Motor Cortices Induced by Paired Associative Stimulation to the Dominant Hemisphere Does Not Differ between Young and Older Adults

2017

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Older adults have been shown to exhibit a reduction in the lateralization of neural activity. Although neuroplasticity induced by noninvasive brain stimulation has been reported to be attenuated in the targeted motor cortex of older adults, it remains possible that the plasticity effects may instead manifest in a more distributed (bilateral) network. Furthermore, attention, which modulates neuroplasticity in young adults, may influence these effects. To address these questions, plasticity was induced in young (19–32 years) and older (65–78 years) adults using transcranial magnetic stimulation (TMS) paired with peripheral nerve stimulation. The plasticity effects induced by this paired associative stimulation (PAS) protocol in the targeted and nontargeted hemispheres were probed using TMS-induced motor-evoked potentials (MEPs) recorded from the abductor pollicis brevis (APB) muscle of each hand. PAS-induced effects were highly variable across individuals, with only half of the participants in each group demonstrating the expected increase in MEP amplitude. Contrary to predictions, however, PAS-induced corticospinal plasticity manifests predominately in the targeted hemisphere for both young and older adults. Attention to the target hand did not enhance corticospinal plasticity. The results suggest that plasticity does not manifest differently across bilateral corticospinal pathways between young and older adults.

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Plasticity, stereotypy, intra-individual variability and personality: Handle with care

Cited by 32 publications

References 68 publications

Personality and behavioural syndrome in Necromys lasiurus (Rodentia: Cricetidae): notes on dispersal and invasion processes

Personality and behavioural syndrome in Necromys lasiurus (Rodentia: Cricetidae): notes on dispersal and invasion processes

Predator personality and prey behavioural predictability jointly determine foraging performance

Corticospinal Plasticity in Bilateral Primary Motor Cortices Induced by Paired Associative Stimulation to the Dominant Hemisphere Does Not Differ between Young and Older Adults

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