Check out my profile on Research Gate and on Google Scholar or explore my full publication list below. Most papers are available online through the public repository at HAL CNRS
2023
4.
George A. Brusch; Jean‐François Le Galliard; Robin Viton; Rodrigo S. B. Gavira; Jean Clobert; Olivier Lourdais
In: Oikos, vol. 2023, no. 3, 2023, ISSN: 0030-1299, 1600-0706.
Links | BibTeX | Tags: climate change, pregnancy, temperature
@article{brusch_reproducing_2023,
title = {Reproducing in a changing world: combined effects of thermal conditions by day and night and of water constraints during pregnancy in a cold‐adapted ectotherm},
author = {George A. Brusch and Jean‐François Le Galliard and Robin Viton and Rodrigo S. B. Gavira and Jean Clobert and Olivier Lourdais},
url = {https://onlinelibrary.wiley.com/doi/10.1111/oik.09536},
doi = {10.1111/oik.09536},
issn = {0030-1299, 1600-0706},
year = {2023},
date = {2023-03-01},
urldate = {2023-07-18},
journal = {Oikos},
volume = {2023},
number = {3},
keywords = {climate change, pregnancy, temperature},
pubstate = {published},
tppubtype = {article}
}
2022
3.
Mathias Dezetter; Andréaz Dupoué; Jean François Le Galliard; Olivier Lourdais
Additive effects of developmental acclimation and physiological syndromes on lifetime metabolic and water loss rates of a dry-skinned ectotherm Journal Article
In: Functional Ecology, vol. 36, iss. 2, pp. 432-445, 2022, ISSN: 1365-2435, (_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.13951).
Abstract | Links | BibTeX | Tags: metabolism, physiology, plasticity, temperature, water loss
@article{dezetter_additive_2021,
title = {Additive effects of developmental acclimation and physiological syndromes on lifetime metabolic and water loss rates of a dry-skinned ectotherm},
author = {Mathias Dezetter and Andréaz Dupoué and Jean François Le Galliard and Olivier Lourdais},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/1365-2435.13951},
doi = {10.1111/1365-2435.13951},
issn = {1365-2435},
year = {2022},
date = {2022-02-01},
journal = {Functional Ecology},
volume = {36},
issue = {2},
pages = {432-445},
abstract = {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. 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). We used climatic chambers to simulate three contrasted daily thermal cycles (warm, medium and cold) differing in mean temperatures (28, 24, and 20°C respectively) and amplitudes (5, 10 and 13°C respectively) during immature life (0 to 4 years of age). Individuals were then maintained under common garden conditions (medium cycle) for an additional 3-years period (4 to 7 years of age). SMR and TEWL were repeatedly measured in the same individuals throughout life during and after the climate manipulation. 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. 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. 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 for 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.},
note = {_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.13951},
keywords = {metabolism, physiology, plasticity, temperature, water loss},
pubstate = {published},
tppubtype = {article}
}
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. 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). We used climatic chambers to simulate three contrasted daily thermal cycles (warm, medium and cold) differing in mean temperatures (28, 24, and 20°C respectively) and amplitudes (5, 10 and 13°C respectively) during immature life (0 to 4 years of age). Individuals were then maintained under common garden conditions (medium cycle) for an additional 3-years period (4 to 7 years of age). SMR and TEWL were repeatedly measured in the same individuals throughout life during and after the climate manipulation. 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. 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. 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 for 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.
2020
2.
Andréaz Dupoué; Pauline Blaimont; David Rozen‐Rechels; Murielle Richard; Sandrine Meylan; Jean Clobert; Donald B Miles; Rémi Martin; Beatriz Decencière; Simon Agostini; Jean‐François Le Galliard
Water availability and temperature induce changes in oxidative status during pregnancy in a viviparous lizard Journal Article
In: Functional Ecology, vol. 34, no. 2, pp. 475-485, 2020, ISSN: 0269-8463, 1365-2435.
Links | BibTeX | Tags: antioxidant capacity, ectotherms, oxidative stress, performance, temperature
@article{dupoue_water_2020,
title = {Water availability and temperature induce changes in oxidative status during pregnancy in a viviparous lizard},
author = {Andréaz Dupoué and Pauline Blaimont and David Rozen‐Rechels and Murielle Richard and Sandrine Meylan and Jean Clobert and Donald B Miles and Rémi Martin and Beatriz Decencière and Simon Agostini and Jean‐François Le Galliard},
editor = {David Costantini},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/1365-2435.13481},
doi = {10.1111/1365-2435.13481},
issn = {0269-8463, 1365-2435},
year = {2020},
date = {2020-02-01},
urldate = {2020-02-11},
journal = {Functional Ecology},
volume = {34},
number = {2},
pages = {475-485},
keywords = {antioxidant capacity, ectotherms, oxidative stress, performance, temperature},
pubstate = {published},
tppubtype = {article}
}
1.
George A Brusch; Rodrigo S B Gavira; Robin Viton; Andréaz Dupoué; Mathieu Leroux-Coyau; Sandrine Meylan; Jean-Franc cois Le Galliard; Olivier Lourdais
Additive effects of temperature and water availability on pregnancy in a viviparous lizard Journal Article
In: Journal of Experimental Biology, vol. 223, no. 19, 2020, ISSN: 0022-0949.
Abstract | Links | BibTeX | Tags: antioxidant capacity, dehydration, oxidative stress, reproduction, temperature
@article{Bruschjeb228064,
title = {Additive effects of temperature and water availability on pregnancy in a viviparous lizard},
author = {George A Brusch and Rodrigo S B Gavira and Robin Viton and Andréaz Dupoué and Mathieu Leroux-Coyau and Sandrine Meylan and Jean-Fran{c c}ois Le Galliard and Olivier Lourdais},
url = {https://jeb.biologists.org/content/223/19/jeb228064},
doi = {10.1242/jeb.228064},
issn = {0022-0949},
year = {2020},
date = {2020-01-01},
journal = {Journal of Experimental Biology},
volume = {223},
number = {19},
publisher = {The Company of Biologists Ltd},
abstract = {One of the greatest current threats to biodiversity is climate change. However, understanding of organismal responses to fluctuations in temperature and water availability is currently lacking, especially during fundamental life-history stages such as reproduction. To further explore how temperature and water availability impact maternal physiology and reproductive output, we used the viviparous form of the European common lizard (Zootoca vivipara) in a two-by-two factorial design manipulating both hydric and thermal conditions, for the first time. We collected blood samples and morphological measurements during early pregnancy and post-parturition to investigate how water availability, temperature and a combination of the two influence maternal phenology, morphology, physiology and reproductive output. We observed that dehydration during gestation negatively affects maternal physiological condition (lower mass gain, higher tail reserve mobilization) but has little effect on reproductive output. These effects are mainly additive to temperature regimes, with a proportional increase in maternal costs in warmer environments. Our study demonstrates the importance of considering combined effects of water and temperature when investigating organismal responses to climate changes, especially during periods crucial for species survival such as reproduction.},
keywords = {antioxidant capacity, dehydration, oxidative stress, reproduction, temperature},
pubstate = {published},
tppubtype = {article}
}
One of the greatest current threats to biodiversity is climate change. However, understanding of organismal responses to fluctuations in temperature and water availability is currently lacking, especially during fundamental life-history stages such as reproduction. To further explore how temperature and water availability impact maternal physiology and reproductive output, we used the viviparous form of the European common lizard (Zootoca vivipara) in a two-by-two factorial design manipulating both hydric and thermal conditions, for the first time. We collected blood samples and morphological measurements during early pregnancy and post-parturition to investigate how water availability, temperature and a combination of the two influence maternal phenology, morphology, physiology and reproductive output. We observed that dehydration during gestation negatively affects maternal physiological condition (lower mass gain, higher tail reserve mobilization) but has little effect on reproductive output. These effects are mainly additive to temperature regimes, with a proportional increase in maternal costs in warmer environments. Our study demonstrates the importance of considering combined effects of water and temperature when investigating organismal responses to climate changes, especially during periods crucial for species survival such as reproduction.