Telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment

Abstract Assortative mating by telomere lengths has been observed in several bird species, and in some cases may increase fitness of individuals. Here we examined the relationship between telomere lengths of Blue-footed Booby (Sula nebouxii) mates, long-lived colonial seabirds with high annual divor...

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Autores principales:	Rebecca C. Young, Alexander S. Kitaysky, Hugh M. Drummond
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9cbc08031ce942269d29cbae321937a0
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spelling	oai:doaj.org-article:9cbc08031ce942269d29cbae321937a02021-12-02T13:20:21ZTelomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment10.1038/s41598-021-85068-x2045-2322https://doaj.org/article/9cbc08031ce942269d29cbae321937a02021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85068-xhttps://doaj.org/toc/2045-2322Abstract Assortative mating by telomere lengths has been observed in several bird species, and in some cases may increase fitness of individuals. Here we examined the relationship between telomere lengths of Blue-footed Booby (Sula nebouxii) mates, long-lived colonial seabirds with high annual divorce rates. We tested the hypothesis that interactions between maternal and paternal telomere lengths affect offspring and parental survival. We found that relative telomere lengths (RTL) were strongly positively correlated between members of a breeding pair. In addition, RTL of both parents interacted to predict fledgling recruitment, although fledglings with two very long-RTL parents performed only averagely. Telomere lengths also predicted adult survival: birds with long telomeres were more likely to survive, but birds whose mate had long telomeres were less likely to survive. Thus, having long telomeres benefits survival, while choosing a mate with long telomeres benefits reproductive output while penalizing survival. These patterns demonstrate that while a breeder's RTL predicts offspring quality, assortative mating by RTL does not enhance fitness, and a trade-off between different components of fitness may govern patterns of assortative mating by telomere length. They also illustrate how testing the adaptive value of only one parent’s telomere length on either survival or reproductive success alone may provide equivocal results.Rebecca C. YoungAlexander S. KitayskyHugh M. DrummondNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rebecca C. Young Alexander S. Kitaysky Hugh M. Drummond Telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment
description	Abstract Assortative mating by telomere lengths has been observed in several bird species, and in some cases may increase fitness of individuals. Here we examined the relationship between telomere lengths of Blue-footed Booby (Sula nebouxii) mates, long-lived colonial seabirds with high annual divorce rates. We tested the hypothesis that interactions between maternal and paternal telomere lengths affect offspring and parental survival. We found that relative telomere lengths (RTL) were strongly positively correlated between members of a breeding pair. In addition, RTL of both parents interacted to predict fledgling recruitment, although fledglings with two very long-RTL parents performed only averagely. Telomere lengths also predicted adult survival: birds with long telomeres were more likely to survive, but birds whose mate had long telomeres were less likely to survive. Thus, having long telomeres benefits survival, while choosing a mate with long telomeres benefits reproductive output while penalizing survival. These patterns demonstrate that while a breeder's RTL predicts offspring quality, assortative mating by RTL does not enhance fitness, and a trade-off between different components of fitness may govern patterns of assortative mating by telomere length. They also illustrate how testing the adaptive value of only one parent’s telomere length on either survival or reproductive success alone may provide equivocal results.
format	article
author	Rebecca C. Young Alexander S. Kitaysky Hugh M. Drummond
author_facet	Rebecca C. Young Alexander S. Kitaysky Hugh M. Drummond
author_sort	Rebecca C. Young
title	Telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment
title_short	Telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment
title_full	Telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment
title_fullStr	Telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment
title_full_unstemmed	Telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment
title_sort	telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9cbc08031ce942269d29cbae321937a0
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Telomere lengths correlate with fitness but assortative mating by telomeres confers no benefit to fledgling recruitment

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