Volume 36, Issue 2 p. 432-445
RESEARCH ARTICLE

Additive effects of developmental acclimation and physiological syndromes on lifetime metabolic and water loss rates of a dry-skinned ectotherm

Mathias Dezetter

Corresponding Author

Mathias Dezetter

CNRS Sorbonne Université, UMR 7618, iEES Paris, Université Pierre et Marie Curie, Paris, France

Centre d’étude Biologique de Chizé CNRS, UMR 7372, Villiers en Bois, France

Correspondence

Mathias Dezetter

Email: [email protected]

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Andréaz Dupoué

Andréaz Dupoué

CNRS Sorbonne Université, UMR 7618, iEES Paris, Université Pierre et Marie Curie, Paris, France

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Jean-François Le Galliard

Jean-François Le Galliard

CNRS Sorbonne Université, UMR 7618, iEES Paris, Université Pierre et Marie Curie, Paris, France

Ecole Normale Supérieure, PSL Research University, CNRS, UMS 3194, Centre de Recherche en Écologie Expérimentale et Prédictive (CEREEP-Ecotron IleDeFrance), Saint-Pierre-lès-Nemours, France

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Olivier Lourdais

Olivier Lourdais

Centre d’étude Biologique de Chizé CNRS, UMR 7372, Villiers en Bois, France

School of Life Sciences, Arizona State University, Tempe, AZ, USA

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First published: 16 October 2021
Citations: 4

Handling Editor: Katie Marshall

Abstract

  1. Developmental plasticity and thermal acclimation can contribute to adaptive responses to climate change by altering functional traits related to energy and water balance regulation. How plasticity interacts with physiological syndromes through lifetime in long-lived species is currently unknown.
  2. Here, we examined the impacts of long-term thermal acclimation in a long-lived temperate ectotherm Vipera aspis and its potential flexibility at adulthood for two related functional traits: standard metabolic rate (SMR) and total evaporative water loss (TEWL).
  3. We used climatic chambers to simulate three contrasted daily thermal cycles (warm, medium and cold) differing in mean temperatures (28, 24 and 20℃ respectively) and amplitudes (5, 10 and 13℃ respectively) during immature life (0 to 4 years of age). Individuals were then maintained under common garden conditions (medium cycle) for an additional 3-year period (4–7 years of age). SMR and TEWL were repeatedly measured in the same individuals throughout life during and after the climate manipulation.
  4. Individuals reduced their SMR (negative compensation) when experiencing the warm cycle but flexibly adjusted their SMR to common garden conditions at adulthood. In addition, thermal conditions during the juvenile life stage led to changes in TEWL persisting until adulthood.
  5. We further found consistent intra-individual variation for SMR and TEWL and a positive intra-individual and inter-individual covariation between them throughout life. Thus, plastic responses were combined with a physiological syndrome linking SMR and TEWL.
  6. Our study demonstrates the capacity of long-lived organisms to flexibly shift their SMR to reduce daily maintenance costs in warmer and less variable thermal environments, which might be beneficial to low-energy specialist organisms such as vipers. It further suggests that thermal conditions provide cues for developmental changes in TEWL. Beside plasticity, contrasted individual physiological syndromes could be selected for and contribute to the response to climate change.

A free Plain Language Summary can be found within the Supporting Information of this article.

CONFLICT OF INTEREST

The authors declare no competing or financial interests.

DATA AVAILABILITY STATEMENT

Data are available at Zenodo with https://doi.org/10.5281/zenodo.5561142 (Dezetter et al., 2021).