Comparison of personality between juveniles and adults in clonal gecko species

Sakai, Osamu

doi:10.1007/s10164-018-0551-2

Cited by 16 publications

(7 citation statements)

References 44 publications

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“…Substantial variation in specific behavioral measures, even in inbred lines raised in standardized conditions, has been observed in several clonal animals, including geckoes ( Sakai, 2018 ), amazonian mollies ( Bierbach et al, 2017 ), and aphids and nematodes ( Schuett et al, 2011 ; Stern et al, 2017 ). Genetic model systems hold particular promise for the mechanistic dissection of this variation, and intragenotypic variability (IGV) in behavior has been characterized in mice ( Freund et al, 2013 ), zebrafish ( Bierbach et al, 2017 ), and Drosophila .…”

Section: Introductionmentioning

confidence: 99%

The structure of behavioral variation within a genotype

Werkhoven¹,

Bravin²,

Skutt-Kakaria

et al. 2021

eLife

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Individual animals vary in their behaviors. This is true even when they share the same genotype and were reared in the same environment. Clusters of covarying behaviors constitute behavioral syndromes, and an individual’s position along such axes of covariation is a representation of their personality. Despite these conceptual frameworks, the structure of behavioral covariation within a genotype is essentially uncharacterized and its mechanistic origins unknown. Passing hundreds of inbred Drosophila individuals through an experimental pipeline that captured hundreds of behavioral measures, we found sparse but significant correlations among small sets of behaviors. Thus, the space of behavioral variation has many independent dimensions. Manipulating the physiology of the brain, and specific neural populations, altered specific correlations. We also observed that variation in gene expression can predict an individual’s position on some behavioral axes. This work represents the first steps in understanding the biological mechanisms determining the structure of behavioral variation within a genotype.

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Section: Introductionmentioning

confidence: 99%

The structure of behavioral variation within a genotype

Werkhoven¹,

Bravin²,

Skutt-Kakaria

et al. 2021

eLife

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“…Findings from other studies have also countered the notion that behavioural differences among individuals are necessarily consistent over long timescales (Kanda et al 2012;Polverino et al 2016a;Sakai 2018;Rohrer and Ferkin 2020). For example, meadow voles (Microtus pennsylvanicus) were exposed to a novel object test, with the number of approaches towards the novel object (activity), latency to approach (exploration), and latency to move within the test arena (boldness) being measured six times every 60 days (Rohrer and Ferkin 2020).…”

Section: Temporal Stability In Behavioural Variationmentioning

confidence: 98%

“…The decrease in behavioural difference over time is thought to depend upon individuals progressing through different ontogenetic stages (Debeffe et al 2015;Wuez and Kruger 2015;Stamps and Krishnan 2017;Mitchell et al 2020). However, several longitudinal studies indicate that personality estimates can also increase with animals' age, revealing that behavioural differences are often more consistent later in life (Debeffe et al 2015;Polverino et al 2016aPolverino et al , 2016bSakai 2018;Rohrer and Ferkin 2020). If behavioural differences among individuals increase over a lifetime, behavioural syndromes might also be more pronounced in groups of older than young individuals (Polverino 2020).…”

Section: Introductionmentioning

confidence: 99%

Temporal repeatability of behaviour in a lizard: implications for behavioural syndrome studies

et al. 2023

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It is well established that, across taxa, individuals within populations exhibit consistent differences in their behaviour across time and/or contexts. Further, the functional coupling of traits may result in the formation of a behavioural syndrome. Despite extensive evidence on the existence of consistent among-individual differences in behaviour and behavioural syndromes in the animal realm, these findings are predominately based upon short-term assessments, leading to questions regarding their stability over longer periods. Understanding if these estimates are temporally stable would allow predictions of individual behaviour to be made using short-term repeated measures. Here, we used 57 adult male delicate skinks (Lampropholis delicata) to evaluate the stability of behavioural variation observed both among (animal personality and behavioural plasticity) and within individuals (behavioural predictability), as well as behavioural syndromes, across short (four weeks) and long (five months) timeframes. To do so, we repeatedly assayed activity, exploration, and boldness five times per each individual. Overall, our study revealed complex patterns of behavioural variation and trait (co)variation over time. Activity was always repeatable across time intervals, whereas behavioural differences among individuals in exploration and boldness were not consistent. Yet a behavioural syndrome between activity and exploration was detected at both shorter and longer temporal scales, suggesting that syndrome structure in these traits does not vary as a function of time. Our findings indicate that, at least for some traits (e.g. activity) and studies, short-term measures may be adequate in serving as a proxy for long-term variation in individual behaviour, and to reveal the existence of behavioural syndromes at the population level.

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“…In addition to complex patterns of social behavior, some studies have found that reptiles display personalities that change across ontogeny. For example, decreases in boldness and exploration across the transition from juvenile to adult were found in mourning geckos (Lepidodactylus lugubris; Sakai, 2018). In snakes, long-term individual consistency in predator defense behavior has been observed in Mexican black-bellied gartersnakes (Thamnophis melanogaster; Herzog & Burgardt 1988) and northwestern gartersnakes (Thamnophis ordinoides; Brodie, 1993;see Waters 2017 for review).…”

Section: Introductionmentioning

confidence: 99%

Stability and change in gartersnake social networks across ontogeny

Skinner

Miller

2022

Ethology

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Developmental studies of sociality in non-human animals can offer important insights into the evolution, function, and plasticity of social behavior, especially in understudied species. We examined the development of social behavior in gartersnakes. We hypothesized that social interactions change as snakes age, but are relatively stable in the short term. To assess developmental changes in social patterns, we examined the social tendencies of a group of 6 eastern gartersnakes over the first year and a half of their lives. We placed the snakes in an arena for 8 days and recorded the time that they spent in physical proximity to each other. We repeated this 8-day process 7 times across the snakes' development. We looked at changes in association patterns and individual differences in sociality (i.e., network position), and examined the effect of group size reduction on social behavior. We found that individuals tended to show repeatable network position across time, but there was a behavioral divide between younger snakes and mature snakes. When male snakes reached sexual maturity, they began initiating most social interactions. Additionally, group member attrition caused the networks to tighten, and the population reduction in combination with sexual maturity created stable social networks. This research shows that social context can have important effects on sociability, and that even a species without permanent social groups will be influenced by its social environment.

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Comparison of personality between juveniles and adults in clonal gecko species

Cited by 16 publications

References 44 publications

The structure of behavioral variation within a genotype

The structure of behavioral variation within a genotype

Temporal repeatability of behaviour in a lizard: implications for behavioural syndrome studies

Stability and change in gartersnake social networks across ontogeny

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