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
2020
Rémy Josserand; Claudy Haussy; Simon Agostini; Beatriz Decencière; Jean-François Le Galliard; Sandrine Meylan
Chronic elevation of glucorticoids late in life generates long lasting changes in physiological state without a life history switch Journal Article
In: General and Comparative Endocrinology, vol. 285, pp. 113288, 2020, ISSN: 0016-6480.
Abstract | Links | BibTeX | Tags: immunity, maternal effect, metabolism, oxidative stress, stress, triglycerides
@article{josserand_chronic_2020,
title = {Chronic elevation of glucorticoids late in life generates long lasting changes in physiological state without a life history switch},
author = {Rémy Josserand and Claudy Haussy and Simon Agostini and Beatriz Decencière and Jean-François Le Galliard and Sandrine Meylan},
url = {http://www.sciencedirect.com/science/article/pii/S0016648019300929},
doi = {10.1016/j.ygcen.2019.113288},
issn = {0016-6480},
year = {2020},
date = {2020-01-01},
urldate = {2019-09-26},
journal = {General and Comparative Endocrinology},
volume = {285},
pages = {113288},
abstract = {Chronic stressors have profound impacts on phenotypes and life history strategies on the short term, but delayed effects of stress experienced late in life remain poorly investigated in wild populations. Here, we used a combined laboratory and field experiment to test if chronic stress late in life has immediate and delayed effects on physiological and demographic traits in the common lizard, Zootoca vivipara. We increased plasma corticosterone levels in adults and yearlings during three weeks of the post-reproductive season. We quantified immediate responses in the laboratory, delayed intra-generational effects in field enclosures one month and one year later during the next reproductive season, and delayed inter-generational effects in the first generation of offspring. Our phenotypic assays included metabolism, immune capacities, lipid metabolism and oxidative stress. Relative to placebos, lizards treated with corticosterone had higher body condition and lower oxidative damages but an increased skin swelling response directly after the manipulation. Delayed responses in field enclosures were of three types. First, we found catch-up growth for body mass such the placebos had similar body conditions one month after the laboratory manipulation. Second, we found persistent differences in oxidative damages during one month but not one year later. Third, during the next reproductive season, corticosterone-treated females had higher levels of plasma triglycerides, whereas corticosterone-treated individuals had a higher skin swelling response. We found no delayed inter-generational effects on demographic traits of offspring. Our study demonstrates the potential for long-lasting physiological consequences of chronic corticosterone enhancement despite no obvious changes in life history.},
keywords = {immunity, maternal effect, metabolism, oxidative stress, stress, triglycerides},
pubstate = {published},
tppubtype = {article}
}
2018
David Rozen-Rechels; Andréaz Dupoué; Sandrine Meylan; Beatriz Decencière; Sophie Guingand; Jean-François Le Galliard
Water restriction in viviparous lizards causes transgenerational effects on behavioral anxiety and immediate effects on exploration behavior Journal Article
In: Behavioral Ecology and Sociobiology, vol. 72, no. 2, pp. 23, 2018, ISSN: 1432-0762.
Abstract | Links | BibTeX | Tags: maternal effect, squamate reptiles, stress, thigmotaxis, water availability
@article{rozen-rechels_water_2018,
title = {Water restriction in viviparous lizards causes transgenerational effects on behavioral anxiety and immediate effects on exploration behavior},
author = {David Rozen-Rechels and Andréaz Dupoué and Sandrine Meylan and Beatriz Decencière and Sophie Guingand and Jean-François Le Galliard},
url = {https://doi.org/10.1007/s00265-018-2443-4},
doi = {10.1007/s00265-018-2443-4},
issn = {1432-0762},
year = {2018},
date = {2018-01-01},
urldate = {2019-09-13},
journal = {Behavioral Ecology and Sociobiology},
volume = {72},
number = {2},
pages = {23},
abstract = {Behavioral plasticity induced by maternal effects is crucial in adjusting offspring phenotype to match the environment. In particular, changes in water availability during development may initiate a range of behavioral responses, such as natal dispersal, but the contribution of maternal effects from water stress in explaining behavioral variation has been overlooked so far. In this study, we examined behavioral plasticity of juvenile common lizards (Zootoca vivipara) in response to changes in pre-natal and post-natal hydric conditions. We exposed pregnant mothers either to a moderate water restriction or to ad libitum access to water. We used neutral arena tests to measure repeatedly activity and space use behaviors of their offspring, either in dry or wet soil conditions, at two distinct life stages (juveniles and yearlings) in order to quantify behavioral flexibility, age differences, and personalities (consistent inter-individual differences). Juveniles and yearlings had greater exploration scores in dry than wet conditions regardless of the pre-natal conditions. Pre-natal water restriction and dry post-natal conditions enhanced thigmotaxis (i.e., a behavior related to anxiety) in juveniles. Maternal environment did not influence behavioral flexibility nor the behavior of yearlings. Behaviors were barely repeatable in juveniles and inconsistent through early life. Assuming that dry conditions may initiate flight responses, these results suggest complex relationships between the developmental timing of water stress, exploration and anxiety behaviors, and dispersal syndromes.Significance statementWater restriction should initiate a range of behaviors related to a flight response. However, there is little evidence that changes in water availability across development influence offspring behavior in wild animals. Experiments with lizards demonstrate that maternal water restriction increased the anxiety of their juveniles, whereas their exploration was higher in dry environments. Thus, water availability may be a critical determinant of space use behavior and dispersal syndromes.},
keywords = {maternal effect, squamate reptiles, stress, thigmotaxis, water availability},
pubstate = {published},
tppubtype = {article}
}