Dataset Information

In vivo imaging of D₂ receptors and corticosteroids predict behavioural responses to captivity stress in a wild bird.

ABSTRACT: Individual physiological variation may underlie individual differences in behaviour in response to stressors. This study tested the hypothesis that individual variation in dopamine and corticosteroid physiology in wild house sparrows (Passer domesticus, n?=?15) would significantly predict behaviour and weight loss in response to a long-term stressor, captivity. We found that individuals that coped better with captivity (fewer anxiety-related behaviours, more time spent feeding, higher body mass) had lower baseline and higher stress-induced corticosteroid titres at capture. Birds with higher striatal D₂ receptor binding (examined using positron emission tomography (PET) with ¹¹C-raclopride 24?h post-capture) spent more time feeding in captivity, but weighed less, than birds with lower D₂ receptor binding. In the subset of individuals imaged a second time, D₂ receptor binding decreased in captivity in moulting birds, and larger D₂ decreases were associated with increased anxiety behaviours 2 and 4 weeks post-capture. This suggests changes in dopaminergic systems could be one physiological mechanism underlying negative behavioural effects of chronic stress. Non-invasive technologies like PET have the potential to transform our understanding of links between individual variation in physiology and behaviour and elucidate which neuroendocrine phenotypes predict stress resilience, a question with important implications for both humans and wildlife.

SUBMITTER: Lattin CR

PROVIDER: S-EPMC6639298 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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In vivo imaging of D<sub>2</sub> receptors and corticosteroids predict behavioural responses to captivity stress in a wild bird.

Lattin Christine R CR Merullo Devin P DP Riters Lauren V LV Carson Richard E RE

Scientific reports 20190718 1

Individual physiological variation may underlie individual differences in behaviour in response to stressors. This study tested the hypothesis that individual variation in dopamine and corticosteroid physiology in wild house sparrows (Passer domesticus, n = 15) would significantly predict behaviour and weight loss in response to a long-term stressor, captivity. We found that individuals that coped better with captivity (fewer anxiety-related behaviours, more time spent feeding, higher body mass) ...[more]

PMID: 31320692

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Dataset Information

In vivo imaging of D₂ receptors and corticosteroids predict behavioural responses to captivity stress in a wild bird.

Publications

In vivo imaging of D<sub>2</sub> receptors and corticosteroids predict behavioural responses to captivity stress in a wild bird.

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Dataset Information

In vivo imaging of D2 receptors and corticosteroids predict behavioural responses to captivity stress in a wild bird.

Publications

In vivo imaging of D<sub>2</sub> receptors and corticosteroids predict behavioural responses to captivity stress in a wild bird.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

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In vivo imaging of D₂ receptors and corticosteroids predict behavioural responses to captivity stress in a wild bird.