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46 results for “pace of life”
Data from: Metabolic rate covaries with fitness and the pace of the life history in the field
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Data from: Thermal physiology: a new dimension of the pace-of-life syndrome
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The relative effects of pace of life and habitat characteristics on the evolution of sexual ornaments: a comparative assessment
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Data from: Pace of life, predators and parasites: predator-induced life history evolution in Trinidadian guppies predicts decrease in parasite tolerance
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Data from: Fuel for the pace of life: baseline blood glucose concentration coevolves with life history traits in songbirds
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Data from: Paceless life? a meta-analysis of the pace-of-life syndrome hypothesis
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Data from: Integrating the pace-of-life syndrome across species, sexes and individuals: covariation of life history and personality under pesticide exposure
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Data from: Pace of life syndrome under warming and pollution: integrating life history, behavior and physiology across latitudes
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Data from: Urbanization drives genetic differentiation in physiology and structures the evolution of pace-of-life syndromes in the water flea Daphnia magna
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Data from: Basal metabolism in tropical birds: latitude, altitude, and the “pace of life”
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Data from: Personality, immune response and reproductive success: an appraisal of the pace-of-life syndrome hypothesis
The pace-of-life syndrome (POLS) hypothesis is an extended concept of the life-history theory that includes behavioural traits. The studies challenging the POLS hypothesis often focus on the relationships between a single personality trait and a physiological and/or life-history trait. While pathogens represent a major selective pressure, few studies have been interested in testing relationships between behavioural syndrome, and several fitness components including immunity. The aim of this study was to address this question in the mealworm beetle, Tenebrio molitor, a model species in immunity studies. The personality score was estimated from a multidimensional syndrome based of four repeatable behavioural traits. In a first experiment, we investigated its relationship with two measures of fitness (reproduction and survival) and three components of the innate immunity (haemocyte concentration, and levels of activity of the phenoloxidase including the total proenzyme and the naturally activated one) to challenge the POLS hypothesis in T. molitor. Overall, we found a relationship between behavioural syndrome and reproductive success in this species, thus supporting the POLS hypothesis. We also showed a sex-specific relationship between behavioural syndrome and basal immune parameters. In a second experiment, we tested whether this observed relationship with innate immunity could be confirmed in term of differential survival after challenging by entomopathogenic bacteria, Bacillus thuringiensis. In this case, no significant relationship was evidenced. We recommend that future researchers on the POLS should control for differences in evolutionary trajectory between sexes and to pay attention to the choice of the proxy used, especially when looking at immune traits.
Data from: Sex-specific pace-of-life syndromes
The pace-of-life syndrome (POLS) hypothesis considers an animal's behavior, physiology, and life-history as non-independent components of a single integrated phenotype. However, frequent deviations from the expected correlations between POLS traits suggests that these relationships may be context, and potentially, sex-dependent. To determine whether the sexes express distinct POLS trait covariance structures, we observed the behavior (mobility, latency to emerge from a shelter), physiology (mass-specific metabolic rate) and life-history (lifespan, development time) of male and female Australian field crickets (Teleogryllus oceanicus). Path analysis modelling suggested that POLS trait covariation differed between the sexes. Although neither sex displayed the complete integration of traits predicted by the POLS hypothesis, females did display greater overall integration with a significant negative correlation between metabolic rate and risk-taking behavior but with life-history traits varying independently. In males, however, there was no clear association between traits. These results suggest that T. oceanicus do indeed display sex-specific trait covariance structures, emphasizing the importance of acknowledging sex in assessments of pace-of-life syndromes.
Data from: Pace-of-life in a social insect: behavioral syndromes in ants shift along a climatic gradient
Behavioral syndromes are correlations between behavioral traits, but their selective advantage under different environmental conditions is not well understood. Here, we used the pace-of-life hypothesis to predict how behavioral syndromes could vary along climatic gradients. This hypothesis states that populations experiencing different ecological conditions should differ in suites of physiological characteristics associated with behavioral and life-history traits. We examined the persistence of behavioral syndromes at multiple levels in the ant Temnothorax longispinosus along a climatic gradient in north-eastern USA. "Across populations", we predicted that proactive phenotypes, which show higher activity, aggression and exploration, are more likely to persist in warmer climates. "Within populations", we expected positive associations among proactive behaviors to be more pronounced at warmer sites. Additionally, we measured colony productivity to test whether deviation from the population-level syndrome influences their success, and whether such deviations could vary among populations. Behavioral syndromes clearly occurred across populations, with colonies from warmer environments exhibiting more exploration and foraging but slightly less aggressiveness than colonies from colder sites. However, the presence of behavioral syndromes within sites was population-specific. Positive associations between foraging, exploration and aggression, albeit rarely found, were more pronounced at the warmest sites, whereas negative associations were more common at colder sites. Furthermore, colonies from colder environments showed higher syndrome deviations than colonies from warmer environments, which may be linked to resource limitation and may also negatively affect colony productivity. This study partially corroborates the pace-of-life hypothesis and yields insights into the adaptive value of behavioral syndromes along climatic gradients.
F I G U R E 8 in Global warming is projected to lead to increased freshwater growth potential and changes in pace of life in Atlantic salmon Salmo salar
F I G U R E 8 Projected change in age-at-smoltification under the three shared socioeconomic pathways and representative concentration pathways: (a) SSP1-RCP2.6 (green), (b) SSP3-RCP7.0 (orange), and (c) SSP5-RCP8.5 (red) for juvenile Atlantic salmon in the Burrishoole. The grayshaded area represents the historical reference (2000 to 2020), and the red vertical line represents the historical average.
Data from: Proactive avoidance behaviour and pace-of-life syndrome in Atlantic salmon
Individuals in a fish population differ in key life history traits such as growth rate and body size. This raises the question of whether such traits cluster along a fast-slow growth continuum according to a pace-of-life syndrome (POLS). Fish species like salmonids may develop a bimodal size distribution, providing an opportunity to study the relationships between individual growth and behavioural responsiveness. Here we test whether proactive characteristics (bold behaviour coupled with low post-stress cortisol production) are related to fast growth and developmental rate in Atlantic salmon, Salmo salar. Boldness was tested in a highly controlled two-tank hypoxia test were oxygen levels were gradually decreased in one of the tanks. All fish became inactive close to the bottom at 70% oxygen saturation. At oxygen saturation level of 40% a fraction of the fish actively sought out to avoid hypoxia. A proactive stress coping style was verified by lower cortisol response to a standardized stressor. Two distinct clusters of bimodal growth trajectories were identified, with fast growth and early smoltification in 80% of the total population. There was a higher frequency of proactive then reactive individuals in this fast-developing fraction of fish. The smolts were associated with higher post-stress plasma cortisol than parr, and the proactive smolts leaving hypoxia had significant lower post-stress cortisol than the stayers. The study demonstrated a link between a proactive coping and fast growth and developmental ratio, and suggests that selection for domestic production traits promotes this trait cluster.
Data from: Proactive avoidance behaviour and pace-of-life syndrome in Atlantic salmon
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Data from: Pace-of-life in a social insect: behavioral syndromes in ants shift along a climatic gradient
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Data from: Colony pace: a life-history trait affecting social insect epidemiology
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Data from: Personality, immune response and reproductive success: an appraisal of the pace-of-life syndrome hypothesis
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Dataset: Reproductive ageing and pace-of-life syndromes
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.