10.5061/DRYAD.FN2Z34TR7
Tüzün, Nedim
0000-0002-4743-1743
KU Leuven
De Block, Marjan
KU Leuven
Stoks, Robby
KU Leuven
Data from: Live fast, die old: oxidative stress as a potential mediator of
an unexpected life-history evolution
Dryad
dataset
2020
Life History Evolution
pace of life syndrome
trade-offs across metamorphosis
compensatory growth
KU Leuven
https://ror.org/05f950310
C16/17/002
Research Foundation - Flanders
https://ror.org/03qtxy027
G.0524.17N
Research Foundation - Flanders
https://ror.org/03qtxy027
G.0956.19N
2020-06-12T00:00:00Z
2020-06-12T00:00:00Z
en
https://doi.org/10.1111/oik.07183
105792 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Intraspecific latitudinal patterns in life history are well documented,
yet underlying mechanisms of such patterns are poorly understood. To
advance our insights in the evolution of latitudinal differences in two
key traits, growth rate and lifespan, we evaluated the potential costs of
rapid growth in terms of reduced adult lifespan, and the mediatory role of
oxidative stress. We studied latitudinal differentiation in routine and
experimentally increased (compensatory) larval growth rates, and in adult
lifespan under common garden conditions in low- and high-latitude
populations of the damselfly Ischnura elegans. The low-latitude
populations showed not only higher routine growth rates but also a
stronger compensatory growth response after a transient food shortage
compared to the high-latitude populations. In contrast with a trade-off
scenario, adults of the faster growing low-latitude populations lived
longer, had higher levels of antioxidant enzymes, and tended to experience
lower oxidative damage. Importantly, these latitudinal patterns were
largely mirrored at the treatment level, where experimentally induced
compensatory growth rates were associated with neither oxidative damage
nor shorter adult lifespans. Moreover, individuals with a higher growth
rate after the transient food shortage did not have shorter adult
lifespans or higher oxidative damage, but instead showed a stronger
antioxidant defense. Our data indicate that an overcompensatory, hormetic
response in antioxidant defense, potentially induced by the higher routine
growth rates, resulting in less oxidative damage may underlie these
unexpected growth-lifespan patterns. Our results highlight the added value
of incorporating oxidative stress physiology, and the need to consider
multivariate trade-offs in which animals optimize multiple traits, when
studying life-history evolution.
Food treatment; F=fed, S=starved Age1/mass1: age/mass at the start of the
starvation period (day 2) Age2/mass2: age/mass at the end of the
starvation period (day 9) Age3/mass3: age/mass at the end of the
post-starvation period Age4/mass4: age/mass one day after emergence gr1:
pre-starvation growth rate gr2: growth rate during starvation gr3:
post-starvation growth rate