Imperial College London
Alternate

DrJuliaSchroeder

Faculty of Natural Sciences, Department of Life Sciences (Silwood Park)

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 9086julia.schroeder

 
 
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Location

 

2.13MunroSilwood Park

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Summary

 

Publications

Citation

BibTex format

@article{Baugh:2017:10.1016/j.yhbeh.2017.05.011,
author = {Baugh, AT and Senft, RA and Firke, M and Lauder, A and Schroeder, J and Meddle, SL and van, Oers K and Hau, M},
doi = {10.1016/j.yhbeh.2017.05.011},
journal = {Hormones and Behavior},
pages = {99--108},
title = {Risk-averse personalities have a systemically potentiated neuroendocrine stress axis: A multilevel experiment in Parus major},
url = {http://dx.doi.org/10.1016/j.yhbeh.2017.05.011},
volume = {93},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Hormonal pleiotropy-the simultaneous influence of a single hormone on multiple traits-has been hypothesized as an important mechanism underlying personality, and circulating glucocorticoids are central to this idea. A major gap in our understanding is the neural basis for this link. Here we examine the stability and structure of behavioral, endocrine and neuroendocrine traits in a population of songbirds (Parus major). Upon identifying stable and covarying behavioral and endocrine traits, we test the hypothesis that risk-averse personalities exhibit a neuroendocrine stress axis that is systemically potentiated-characterized by stronger glucocorticoid reactivity and weaker negative feedback. We show high among-individual variation and covariation (i.e. personality) in risk-taking behaviors and demonstrate that four aspects of glucocorticoid physiology (baseline, stress response, negative feedback strength and adrenal sensitivity) are also repeatable and covary. Further, we establish that high expression of mineralocorticoid and low expression of glucocorticoid receptor in the brain are linked with systemically elevated plasma glucocorticoid levels and more risk-averse personalities. Our findings support the hypothesis that steroid hormones can exert pleiotropic effects that organize behavioral phenotypes and provide novel evidence that neuroendocrine factors robustly explain a large fraction of endocrine and personality variation.
AU  - Baugh,AT
AU  - Senft,RA
AU  - Firke,M
AU  - Lauder,A
AU  - Schroeder,J
AU  - Meddle,SL
AU  - van,Oers K
AU  - Hau,M
DO  - 10.1016/j.yhbeh.2017.05.011
EP  - 108
PY  - 2017///
SN  - 0018-506X
SP  - 99
TI  - Risk-averse personalities have a systemically potentiated neuroendocrine stress axis: A multilevel experiment in Parus major
T2  - Hormones and Behavior
UR  - http://dx.doi.org/10.1016/j.yhbeh.2017.05.011
UR  - https://www.ncbi.nlm.nih.gov/pubmed/28545898
UR  - http://hdl.handle.net/10044/1/49293
VL  - 93
ER  -
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