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Article Dans Une Revue Journal of Experimental Biology Année : 2023

Biogeographic history moulds population differentiation in ageing of oxidative status in an amphibian

Anita Liparoto
  • Fonction : Auteur
Daniele Canestrelli
Roberta Bisconti
  • Fonction : Auteur
Claudio Carere
  • Fonction : Auteur

Résumé

Regulation of oxidative status plays a substantial role in physiological ageing. However, we know little about age-related changes of oxidative status in wild animals, and even less about the role of population history in moulding ageing rates. We addressed these questions by means of a common garden experiment, using the Tyrrhenian tree frog Hyla sarda as study species. This species underwent a range expansion from northern Sardinia (source) up to Corsica (newly founded) during the Late Pleistocene, and then the two populations became geographically isolated. We found that, at the beginning of the experiment, Sardinia and Corsica frogs had similar concentrations of all oxidative status markers analysed. One year later, Corsica frogs had higher oxidative stress and suffered higher mortality than Sardinia frogs. Our results suggest the intriguing scenario that population differentiation in rates of physiological ageing owing to oxidative stress might be an overlooked legacy of past biogeographic processes.

Dates et versions

hal-03936818 , version 1 (12-01-2023)

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Citer

Anita Liparoto, Daniele Canestrelli, Roberta Bisconti, Claudio Carere, David Costantini. Biogeographic history moulds population differentiation in ageing of oxidative status in an amphibian. Journal of Experimental Biology, 2023, ⟨10.1242/jeb.235002⟩. ⟨hal-03936818⟩

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