Glucocorticoid correlation between barn owl (Tyto alba) breeding partners and its association with reproductive success.
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| Titel: | Glucocorticoid correlation between barn owl (Tyto alba) breeding partners and its association with reproductive success. |
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| Autoren: | Béziers P; Swiss Ornithological Institute, Sempach, Switzerland; University of Lausanne, Department of Ecology and Evolution, Lausanne, Switzerland., Jenni L; Swiss Ornithological Institute, Sempach, Switzerland., Roulin A; University of Lausanne, Department of Ecology and Evolution, Lausanne, Switzerland., Almasi B; Swiss Ornithological Institute, Sempach, Switzerland. Electronic address: bettina.almasi@vogelwarte.ch. |
| Quelle: | Hormones and behavior [Horm Behav] 2025 Nov; Vol. 176, pp. 105842. Date of Electronic Publication: 2025 Oct 22. |
| Publikationsart: | Journal Article |
| Sprache: | English |
| Info zur Zeitschrift: | Publisher: Academic Press Country of Publication: United States NLM ID: 0217764 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1095-6867 (Electronic) Linking ISSN: 0018506X NLM ISO Abbreviation: Horm Behav Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: New York, London, Academic Press. |
| MeSH-Schlagworte: | Strigiformes*/physiology , Strigiformes*/blood , Reproduction*/physiology , Corticosterone*/blood , Nesting Behavior*/physiology, Animals ; Female ; Clutch Size/physiology ; Male |
| Abstract: | Competing Interests: Declaration of competing interest We declare that the manuscript has not been published previously, that it is not under consideration for publication elsewhere, that its publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out, and that, if accepted, it will not be published elsewhere in the same form, in English or in any other language, including electronically without the written consent of the copyright-holder. In biparental species, reproductive success is influenced by the quality of the parents, the care each provides, environmental factors, and the cooperation between parents in sharing reproductive tasks. Hormones like corticosterone, which modulate physiological and behavioural functions associated with reproductive success, likely play a critical role in reproductive success through hormonal compatibility between breeding partners. Here, we investigate how similarity or dissimilarity in corticosterone levels between barn owl (Tyto alba) breeding partners are related to reproductive success. Using data from 2004 to 2018, we analyzed baseline and stress-induced corticosterone to explore correlations between partners' corticosterone levels and their association with key fitness parameters including clutch size, offspring number, and rearing success. We found that while partners' corticosterone levels do not predict clutch size, they are a significant predictor of offspring number and rearing success. Pairs with dissimilar baseline and stress-induced corticosterone produced more fledglings than pairs with similar corticosterone levels. To evaluate the potential advantage or disadvantage of growing up in large broods, we further examined the effect of brood size on offspring quality and survival. Nestlings from smaller broods had better body condition than those from larger broods, and individuals with better condition were more likely to survive their first year. These findings suggest that barn owl reproductive success is influenced by the combined corticosterone profiles of both parents and indicate a potential trade-off between offspring quantity and quality. This study highlights the importance of considering both parents' hormonal profiles when evaluating corticosterone's role in reproduction among biparental species. (Copyright © 2025 The Authors. Published by Elsevier Inc. All rights reserved.) |
| Contributed Indexing: | Keywords: Barn owl; Body condition; Breeding pair investment; Breeding success; Corticosterone; Hormonal profiles; Partner compatibility; Post-fledging offspring survival |
| Substance Nomenclature: | W980KJ009P (Corticosterone) |
| Entry Date(s): | Date Created: 20251023 Date Completed: 20251119 Latest Revision: 20251119 |
| Update Code: | 20251121 |
| DOI: | 10.1016/j.yhbeh.2025.105842 |
| PMID: | 41129988 |
| Datenbank: | MEDLINE |
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Nájsť tento článok vo Web of Science | Abstract: | Competing Interests: Declaration of competing interest We declare that the manuscript has not been published previously, that it is not under consideration for publication elsewhere, that its publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out, and that, if accepted, it will not be published elsewhere in the same form, in English or in any other language, including electronically without the written consent of the copyright-holder.<br />In biparental species, reproductive success is influenced by the quality of the parents, the care each provides, environmental factors, and the cooperation between parents in sharing reproductive tasks. Hormones like corticosterone, which modulate physiological and behavioural functions associated with reproductive success, likely play a critical role in reproductive success through hormonal compatibility between breeding partners. Here, we investigate how similarity or dissimilarity in corticosterone levels between barn owl (Tyto alba) breeding partners are related to reproductive success. Using data from 2004 to 2018, we analyzed baseline and stress-induced corticosterone to explore correlations between partners' corticosterone levels and their association with key fitness parameters including clutch size, offspring number, and rearing success. We found that while partners' corticosterone levels do not predict clutch size, they are a significant predictor of offspring number and rearing success. Pairs with dissimilar baseline and stress-induced corticosterone produced more fledglings than pairs with similar corticosterone levels. To evaluate the potential advantage or disadvantage of growing up in large broods, we further examined the effect of brood size on offspring quality and survival. Nestlings from smaller broods had better body condition than those from larger broods, and individuals with better condition were more likely to survive their first year. These findings suggest that barn owl reproductive success is influenced by the combined corticosterone profiles of both parents and indicate a potential trade-off between offspring quantity and quality. This study highlights the importance of considering both parents' hormonal profiles when evaluating corticosterone's role in reproduction among biparental species.<br /> (Copyright © 2025 The Authors. Published by Elsevier Inc. All rights reserved.) |
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| ISSN: | 1095-6867 |
| DOI: | 10.1016/j.yhbeh.2025.105842 |