Detailed Information on Publication Record
2019
Feather steroid hormone concentrations in relation to age, sex, and molting time in a long distance migratory passerine
KOTASOVÁ ADÁMKOVÁ, Marie, Zuzana BÍLKOVÁ, Oldřich TOMÁŠEK, Zdeněk ŠIMEK, Tomáš ALBRECHT et. al.Basic information
Original name
Feather steroid hormone concentrations in relation to age, sex, and molting time in a long distance migratory passerine
Authors
KOTASOVÁ ADÁMKOVÁ, Marie (203 Czech Republic, belonging to the institution), Zuzana BÍLKOVÁ (203 Czech Republic, belonging to the institution), Oldřich TOMÁŠEK (203 Czech Republic), Zdeněk ŠIMEK (203 Czech Republic, belonging to the institution) and Tomáš ALBRECHT (203 Czech Republic, guarantor)
Edition
Ecology and Evolution, Hoboken, Wiley, 2019, 2045-7758
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10511 Environmental sciences
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 2.392
RIV identification code
RIV/00216224:14310/19:00107614
Organization unit
Faculty of Science
UT WoS
000477499900001
Keywords in English
barn swallow; feather corticosterone; feather testosterone; keratinous matrix; liquid chromatography-tandem mass spectrometry; ptilochronology; stress
Tags
Tags
International impact, Reviewed
Změněno: 19/2/2023 20:45, Mgr. Michaela Hylsová, Ph.D.
Abstract
V originále
In birds, concentrations of testosterone (T) and corticosterone (Cort) are closely connected with many morphological, behavioral, and other physiological traits, including reproduction, metabolism, immunity, and fitness. The direction of the effect of these hormones on above-mentioned traits, and the potential feedback between hormones are in general unclear; in addition, knowledge on how age and sex can affect T and Cort concentrations is still inconsistent. Our study used a novel method to analyze testosterone and corticosterone in feathers (T-f, Cort(f)) based on the precolumn chemical derivatization of hormones before liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. Unlike previously used methods (RIA, EIA), our analytical procedure allows simultaneous analysis of both hormones from small amounts of feathers (4-25 mg) and, thus, overcomes the problem of insufficient detection limits. We applied this method to reveal associations between T-f and Cort(f) hormone concentrations and feather growth, age, and sex in feathers grown during the postbreeding (flanks) and prebreeding (tails) periods in barn swallows (Hirundo rustica). There was neither a correlation between prebreeding and postbreeding T-f, nor between prebreeding and postbreeding Cort(f). Tail Cort(f) concentrations were negatively associated with tail feather growth rates. Feather hormone concentrations were correlated in the prebreeding period, negatively in males but positively in females. Both Cort(f) and T-f were higher in young birds compared to older ones, indicating either an age-related decrease in hormone concentrations within individuals, or the selective disappearance of individuals with high steroid concentrations. Males and females did not differ in Cort(f), but T-f concentrations were higher in males than females, particularly during the prebreeding period. In this study, we provide an effective method for analyzing hormones in feathers in an ecological context, especially in situations when the total amount of feathers available for the analysis is limited.
Links
| EF16_013/0001761, research and development project |
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| GA17-24782S, research and development project |
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| LM2015051, research and development project |
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