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Temperature and telomeres: thermal treatment influences telomere dynamics through a complex interplay of cellular processes in a cold‑climate skink

Fitzpatrick, LJ, Olsson, M, Parsley, LM ORCID: 0000-0003-1225-5484, Pauliny, A, Pinfold, TL ORCID: 0000-0002-0506-6389, Pirtle, T, While, GM ORCID: 0000-0001-8122-9322 and Wapstra, E ORCID: 0000-0002-2050-8026 2019 , 'Temperature and telomeres: thermal treatment influences telomere dynamics through a complex interplay of cellular processes in a cold‑climate skink' , Oecologia, vol. 191, no. 4 , pp. 767-776 , doi: 10.1007/s00442-019-04530-w.

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Abstract

Telomere dynamics vary fundamentally between endothermic populations and species as a result of differences in life history,yet we know little about these patterns in ectotherms. In ectotherms, the relationships between climate, metabolism and lifehistory suggest that telomere attrition should be higher at relatively high environmental temperatures compared to relativelylow environmental temperatures, but these effects may vary between populations due to local adaptation. To address thishypothesis, we sampled reactive oxygen species (ROS) and telomere length of lizards from warm lowland and cool highlandpopulations of a climatically widespread lizard species that we exposed to hot or cold basking treatments. The hot treatmentincreased relative telomere length compared to the cold treatment independent of climatic origin or ROS levels. Lizardsfrom the cool highland region had lower ROS levels than those from the warm lowland region. Within the highland lizards,ROS increased more in the cold basking treatment than the hot basking treatment. These results are in the opposite directionto those predicted, suggesting that the relationships between temperature, metabolism, ROS and telomere dynamics are notstraightforward. Future work incorporating detailed understanding of the thermal reaction norms of these and other linkedtraits is needed to fully understand these processes.

Item Type: Article
Authors/Creators:Fitzpatrick, LJ and Olsson, M and Parsley, LM and Pauliny, A and Pinfold, TL and Pirtle, T and While, GM and Wapstra, E
Keywords: climate, ectotherm, reactive oxygen species, reptile, telomere
Journal or Publication Title: Oecologia
Publisher: Springer-Verlag
ISSN: 0029-8549
DOI / ID Number: 10.1007/s00442-019-04530-w
Copyright Information:

Copyright 2019 Springer-Verlag GmbH Germany, part of Springer Nature

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