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Telomere length is highly repeatable and shorter in individuals with more elaborate sexual ornamentation in a short-lived passerine
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SYSNO ASEP 0554805 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Telomere length is highly repeatable and shorter in individuals with more elaborate sexual ornamentation in a short-lived passerine Author(s) Kauzálová, Tereza (UBO-W) ORCID
Tomášek, Oldřich (UBO-W) RID, ORCID, SAI
Mulder, E. (NL)
Verhulst, S. (NL)
Albrecht, Tomáš (UBO-W) RID, SAI, ORCIDNumber of authors 5 Source Title Molecular Ecology. - : Wiley - ISSN 0962-1083
Roč. 31, č. 23 (2022), s. 6172-6183Number of pages 12 s. Language eng - English Country GB - United Kingdom Keywords ageing ; biomarker ; individual quality ; life history ; repeatability ; tail streamer Subject RIV EG - Zoology OECD category Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology R&D Projects GA21-22160S GA ČR - Czech Science Foundation (CSF) GA19-22538S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UBO-W - RVO:68081766 UT WOS 000761096000001 EID SCOPUS 85125204587 DOI 10.1111/mec.16397 Annotation Quantifying an individual's state as a fitness proxy has proven challenging, but accumulating evidence suggests that telomere length and attrition may indicate individual somatic state and success at self-maintenance, respectively. Sexual ornamentation is also thought to signal phenotypic quality, but links between telomeres and sexual ornamentation have been little explored. To address this issue, we examined whether telomere length and dynamics are predicted by the expression of a sexually selected ornament, the length of the outermost tail feathers (streamers), using longitudinal data from a population of European barn swallows (Hirundo rustica). In 139 adult individuals, each measured twice, we further assessed associations of telomere length with age, sex, breeding status and survival. Telomere length showed high individual repeatability (R =.97) across years while shortening with age in both sexes. Telomere length and dynamics were not significantly associated with survival to the next year, remaining lifespan or reproduction status (comparing breeding and nonbreeding yearlings). Tail streamer length, a sexually selected trait in barn swallows, was negatively associated with telomere length, independent of sex. Thus, telomere length may reflect the costs of carrying an elaborated sexual ornament, although ornament size did not significantly predict telomere shortening. In conclusion, telomere length in adult barn swallows is a highly consistent trait that shows a negative relationship with sexual ornamentation, suggesting a trade-off between sexual ornamentation and telomere length. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2023 Electronic address https://onlinelibrary.wiley.com/doi/10.1111/mec.16397
Number of the records: 1