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@proceedings{1371606, author = {Kotasová Adámková, Marie and Bílková, Zuzana and Horák, Kryštof and Tomášek, Oldřich and Šimek, Zdeněk and Albrecht, Tomáš}, booktitle = {Zoologické dny Brno 2017: sborník abstraktů z konference 9.-10. února 2017. Brno: Ústav biologie obratlovců AV ČR, 2017 - (BRYJA Josef, HORSÁK Michal, HORSÁKOVÁ Veronika, ŘEHÁK Zdeněk, ZUKAL Jan).}, isbn = {978-80-87189-21-4}, title = {Use of feathers for analysis of stress and condition in barn swallows (Hirundo rustica)}, url = {http://zoo.ivb.cz/doc/sborniky/sbornik_2017.pdf}, year = {2017} }
TY - CONF ID - 1371606 AU - Kotasová Adámková, Marie - Bílková, Zuzana - Horák, Kryštof - Tomášek, Oldřich - Šimek, Zdeněk - Albrecht, Tomáš PY - 2017 TI - Use of feathers for analysis of stress and condition in barn swallows (Hirundo rustica) SN - 9788087189214 UR - http://zoo.ivb.cz/doc/sborniky/sbornik_2017.pdf N2 - For birds, replacing feathers during moulting is energetically demanding. Feather ornamentation develops during the moulting period to be used for sexual signalling during the breeding season. Stress and sex hormones may be involved in regulating the development of feather-based sexual signals, but most studies focusing on the link between hormone levels and feather ornaments use plasma hormone concentrations typically obtained during the breeding season, i.e. long after feather ornaments develop. In fact, feathers themselves can offer valuable information about stress levels and condition of an individual bird in time of moulting. In thebarn swallow, long-distance trans-Sahara migrant, we employed an improved LC-MS-based method to quantify stress hormone corticosterone (CORT) deposited in feathers over the period of feather growth at the wintering grounds. In addition, we used ptilochronology to get an information about individual condition (nutrition status) during the period of feather development. We tested the relationships between feather CORT concentration (CORTf) in contour feathers, maximum length of outer tail streamers (an important sexual trait in the European barn swallow subspecies) and growth rate of inner non ornamental tail feathers (GR). We found that individuals with high CORTf levels had shorter outer tail streamers and slower feather growth rate. These results suggest an involvement of stress hormones in feather growth in barn swallows, which may help understanding mechanisms ensuring honesty of body condition signalling via tail streamers in European barn swallows. Analysis of hormone concentrations in feathers is a very suitable method for studies of carry-over effects linking periods of wintering and breeding in long-distance migrants. Supported by the Ministry of Education, Youth and Sports of the Czech Republic (project LH14045) and CSF project 15- 11782S. ER -
KOTASOVÁ ADÁMKOVÁ, Marie, Zuzana BÍLKOVÁ, Kryštof HORÁK, Oldřich TOMÁŠEK, Zdeněk ŠIMEK a Tomáš ALBRECHT. Use of feathers for analysis of stress and condition in barn swallows (Hirundo rustica). In \textit{Zoologické dny Brno 2017: sborník abstraktů z konference 9.-10. února 2017. Brno: Ústav biologie obratlovců AV ČR, 2017 - (BRYJA Josef, HORSÁK Michal, HORSÁKOVÁ Veronika, ŘEHÁK Zdeněk, ZUKAL Jan).}. ISBN~978-80-87189-21-4. 2017.
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