10.5061/DRYAD.73N5TB2SN
Dupoué, Andréaz
0000-0002-2501-464X
French National Centre for Scientific Research
Blaimont, Pauline
University of California, Santa Cruz
Rozen-Rechels, David
French National Centre for Scientific Research
Richard, Murielle
French National Centre for Scientific Research
Meylan, Sandrine
French National Centre for Scientific Research
Clobert, Jean
French National Centre for Scientific Research
Miles, Donald
Ohio University
Martin, Rémi
0000-0001-5800-5910
French National Centre for Scientific Research
Decencière, Beatriz
French National Centre for Scientific Research
Agostini, Simon
French National Centre for Scientific Research
Le Galliard, Jean-François
0000-0002-5965-9868
French National Centre for Scientific Research
Data from: Water availability and temperature induce changes in oxidative
status during pregnancy in a viviparous lizard
Dryad
dataset
2019
antioxidant capacity
Pregnancy
reactive oxygen metabolites
water
2019-11-21T00:00:00Z
2019-11-21T00:00:00Z
en
https://doi.org/10.1111/1365-2435.13481
114226 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Reproduction involves considerable reorganization in an organism’s
physiology that incurs potential toxicity for cells (e.g., oxidative
stress) and decrease in fitness. This framework has been the cornerstone
of the so-called ‘oxidative cost of reproduction’, a theory that remains
controversial and relatively overlooked in non-model ectotherms. Here, we
used two complementary approaches in natural and controlled conditions to
test whether altered access to climate conditions (water and temperature
resources) alters oxidative status and mediates reproductive trade-offs in
viviparous populations of the common lizard (Zootoca vivipara). First, we
examined whether access to free standing water and differences in ambient
temperature across 12 natural populations could be related with variation
in oxidative status, reproductive effort and reproductive success. Second,
we determined whether an experimental restriction to water triggers higher
oxidative cost of reproduction and correlates with fitness measures
(reproductive success, future survival rate and probability of future
reproduction). Pregnant females exhibited higher sensitivity than males to
natural or experimental limitations in temperature and water access. That
is, in restricted environments, pregnant females with higher reproductive
effort exhibited stronger oxidative damage despite enhanced non-enzymatic
antioxidant capacity. Enhanced antioxidant defensive capacity in pregnant
females was positively correlated with higher reproductive success,
whereas elevated oxidative damage negatively correlated with offspring
annual survival. Altogether, our results revealed a context-dependent
oxidative cost of reproduction that was concomitant with a conflict in
water demand from offspring. These new insights should be critical for
understanding ectotherm responses to heat waves and summer droughts that
are increasing in frequency and duration.