The ontogeny of personality in the wild guinea pig

Guenther, Anja; Finkemeier, Marie-Antonine; Trillmich, Fritz

doi:10.1016/j.anbehav.2014.01.032

Cited by 76 publications

(72 citation statements)

References 53 publications

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“…The present results did not support the expected covariance between RMR and personality in D. rerio , which agrees with previous works reporting inconsistent associations between metabolic rates and behavioural types in a range of animals (Seppänen et al , ; Vaz‐Serrano et al , ; Bouwhuis et al , ; Guenther et al , ; Killen et al , ). In European sea bass Dicentrarchus labrax (L. 1758) the correlation between metabolic rate and spontaneous swimming activity, as an index of risk‐taking behaviour, was found to vary across environmental contexts (Killen et al , ).…”

Section: Discussionsupporting

confidence: 74%

Body length rather than routine metabolic rate and body condition correlates with activity and risk‐taking in juvenile zebrafish Danio rerio

Polverino

Bierbach

Killen

et al. 2016

Journal of Fish Biology

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In this study, the following hypotheses were explored using zebrafish Danio rerio: (1) individuals from the same cohort differ consistently in activity and risk-taking and (2) variation in activity and risk-taking is linked to individual differences in metabolic rate, body length and body condition. To examine these hypotheses, juvenile D. rerio were tested for routine metabolic rate and subsequently exposed to an open field test. Strong evidence was found for consistent among-individual differences in activity and risk-taking, which were overall negatively correlated with body length, i.e. larger D. rerio were found to be less active in a potentially dangerous open field and a similar trend was found with respect to a more direct measure of their risk-taking tendency. In contrast, routine metabolic rate and body condition were uncorrelated with both activity and risk-taking of juvenile D. rerio. These findings suggest that body length is associated with risk-related behaviours in juvenile D. rerio for which larger, rather than smaller, individuals may have a higher risk of predation, while the role for routine metabolic rate is relatively limited or non-existent, at least under the conditions of the present study.

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Section: Discussionsupporting

confidence: 74%

Body length rather than routine metabolic rate and body condition correlates with activity and risk‐taking in juvenile zebrafish Danio rerio

Polverino

Bierbach

Killen

et al. 2016

Journal of Fish Biology

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“…Our results, however, contrast with those from an earlier study of adult hyenas showing that being intermediately bold in interactions with lions improved longevity (Yoshida et al, ). Thus, different pressures may influence the survival implications of boldness in different contexts (Bell & Stamps, ; Guenther, Finkemeier, & Trillmich, ; Petelle, McCoy, Alejandro, Martin, & Blumstein, ; Sinn, Gosling, & Moltschaniwskyj, ; Stamps & Groothuis, ).…”

Section: Discussionmentioning

confidence: 99%

Risk‐taking in free‐living spotted hyenas is associated with anthropogenic disturbance, predicts survivorship, and is consistent across experimental contexts

et al. 2019

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Anthropogenic disturbance can have important influences on the fitness and behaviors of wild animals, including their boldness when exposed to risky conditions. We presented spotted hyenas (Crocuta crocuta) from two populations, each exposed to a different level of human activity, with a life‐size model hyena representing an intruder from another clan. The high‐disturbance population lived adjacent to human settlements, and the low‐disturbance population inhabited a relatively undisturbed part of the same national park in Kenya. The mock intruder was presented to individual hyenas to assess their reactions to an alien hyena, and to determine whether their reactions varied with their exposure to anthropogenic activity. We found that human disturbance was indeed associated with hyena risk‐taking behavior in response to the model intruder. Hyenas tested in the low‐disturbance area exhibited more risk‐taking behaviors by approaching the mock intruder more closely, and spending more time near it, than did their counterparts living in high‐disturbance areas. Hyenas that spent less time in close proximity to the model had greater survivorship than those that spent more time in close proximity to it, regardless of disturbance level. Furthermore, the individual differences in risk‐taking measured here were consistent with those obtained previously from the same animals using a different set of experimental manipulations. However, the experimentally induced behaviors were not consistent with naturally occurring risk‐taking behaviors in proximity to lions; this suggests that risk‐taking behaviors are consistent within individuals across experimental contexts, but that exposure to lions elicits different responses. Although our results are consistent with those from earlier tests of anthropogenic disturbance and boldness in spotted hyenas and other predators, they differ from results obtained from birds and small mammals, which are generally found to be bolder in areas characterized by human disturbance.

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“…Indeed, in guinea pigs (Cavia aperea), the length of the photoperiod juveniles are exposed to predicts their resting metabolic rates, cortisol levels and fearlessness through ontogeny (Guenther et al, 2014). In tarantulas (Brachypelma smithi), juveniles reared with environmental enrichment form a correlated suite of four behaviors that reflect a bold personality; whereas those reared under minimal conditions form a correlation between only two traits .…”

Section: Local Environmentmentioning

confidence: 99%

The development of collective personality: the ontogenetic drivers of behavioral variation across groups

2014

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For the past decade, the study of personality has become a topic on the frontier of behavioral ecology. However, most studies have focused on exploring inter-individual behavioral variation in solitary animals, and few account for the role that social interactions may have on the development of an individual's personality. Moreover, a social group may exhibit collective personality: an emergent behavioral phenotype displayed at the group-level, which is not necessarily the sum or average of individual personalities within that group. The social environment, in many cases, can determine group success, which then influences the relative success of all the individuals in that group. In addition, group-level personality may itself evolve, subject to the same selection pressures as individual-level behavioral variation, when the group is a unit under selection. Therefore, we reason that understanding how collective personalities emerge and change over time will be imperative to understanding individual-and group-level behavioral evolution. Personality is considered to be fixed over an individual's lifetime. However, behavior may shift throughout development, particularly during adolescence. Therefore, juvenile behavior should not be compared with adult behavior when assessing personality. Similarly, as conditions within a group and/or the local environment can shift, group behavior may similarly fluctuate as it matures. We discuss potential within-group factors, such as group initiation, group maturation, genetic make-up of the group, and the internal social environment, and external factors, such as how local environment may play a role in generating group-level personalities. There are a variety of studies that explore group development or quantify group personality, but few that integrate both processes. Therefore, we conclude our review by discussing potential ways to evaluate development of collective personality, and propose several focal areas for future research.

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The ontogeny of personality in the wild guinea pig

Cited by 76 publications

References 53 publications

Body length rather than routine metabolic rate and body condition correlates with activity and risk‐taking in juvenile zebrafish Danio rerio

Body length rather than routine metabolic rate and body condition correlates with activity and risk‐taking in juvenile zebrafish Danio rerio

Risk‐taking in free‐living spotted hyenas is associated with anthropogenic disturbance, predicts survivorship, and is consistent across experimental contexts

The development of collective personality: the ontogenetic drivers of behavioral variation across groups

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