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Individual telomere dynamics and their links to life history in a viviparous lizard

Fitzpatrick, LJ, Olsson, M, Pauliny, A, While, GM ORCID: 0000-0001-8122-9322 and Wapstra, E ORCID: 0000-0002-2050-8026 2021 , 'Individual telomere dynamics and their links to life history in a viviparous lizard' , Proceedings of the Royal Society of London B: Biological Sciences, vol. 288, no. 1951 , pp. 1-9 , doi: 10.1098/rspb.2021.0271.

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Abstract

Emerging patterns suggest telomere dynamics and life history are fundamentally linked in endotherms through life-history traits that mediate the processes underlying telomere attrition. Unlike endotherms, ectotherms maintain the ability to lengthen somatic telomeres throughout life and the link between life-history strategies and ectotherm telomere dynamics is unknown. In a well-characterized model system (Niveoscincus ocellatus), we used long-term longitudinal data to study telomere dynamics across climatically divergent populations. We found longer telomeres in individuals from the cool highlands than those from the warm lowlands at birth and as adults. The key determinant of adult telomere length across populations was telomere length at birth, with population-specific effects of age and growth on adult telomere length. The reproductive effort had no proximate effect on telomere length in either population. Maternal factors influenced telomere length at birth in the warm lowlands but not the cool highlands. Our results demonstrate that life-history traits can have pervasive and context-dependent effects on telomere dynamics in ectotherms both within and between populations. We argue that these telomere dynamics may reflect the populations' different life histories, with the slow-growing cool highland population investing more into telomere lengthening compared to the earlier-maturing warm lowland population.

Item Type: Article
Authors/Creators:Fitzpatrick, LJ and Olsson, M and Pauliny, A and While, GM and Wapstra, E
Keywords: climate, life history, reptile, telomere, reproductive senescence, ageing
Journal or Publication Title: Proceedings of the Royal Society of London B: Biological Sciences
Publisher: Royal Soc London
ISSN: 0962-8452
DOI / ID Number: 10.1098/rspb.2021.0271
Copyright Information:

© 2021 The Author(s) Published by the Royal Society. All rights reserved.

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