10.5061/DRYAD.74PS0
Ghanizadeh Kazerouni, Ensiyeh
University of Sydney
Franklin, Craig E.
University of Queensland
Seebacher, Frank
University of Sydney
Data from: UV-B radiation interacts with temperature to determine animal
performance
Dryad
dataset
2016
Gambusia holbrooki
Reactive oxygen species
developmental plasticity
antioxidants.
Holocene
2016-07-09T00:00:00Z
2016-07-09T00:00:00Z
en
https://doi.org/10.1111/1365-2435.12520
61751 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The interaction between UV-B and temperature can modify the effects of
climate variability on animal function because UV-B and increasing
temperatures may increase reactive oxygen species (ROS) production and
thereby impair animal performance. However, antioxidant enzyme activities
are also increased at higher temperatures, which could counteract negative
effects of increased ROS. Conversely, UV-B exposure at lower temperature
can exacerbate the effects of ROS because of lower antioxidant enzyme
activities. Phenotypes can be plastic to compensate for potentially
negative environmental effects. Plasticity may be induced by conditions
experienced during pre- or early post-zygotic development, and it may
occur reversibly within adult organisms (acclimation). Developmental
plasticity and acclimation may interact to determine phenotypes in
variable environments. Here, we tested the hypothesis that increased
antioxidant enzyme activities are insufficient to alleviate the
interactive effects of UV-B and increased temperature on mosquitofish
(Gambusia holbrooki). Additionally, we tested whether developmental
conditions influenced the capacity for acclimation to UV-B and temperature
so that cohorts born in summer at high UV-B and temperature conditions are
better able to compensate for ROS damage compared to cohorts born in
winter. We exposed mosquitofish to UV-B and control (no-UV-B) at different
acclimation temperatures (18, 28 and 32 °C), and measured responses
acutely at 18, 28 and 32 °C in a fully factorial design. In fish born in
summer, UV-B had significant negative effects on swimming performance and
resting metabolic rate at both low (18 °C) and high (32 °C) acclimation
temperatures, which were accompanied by higher ROS-induced damage. At
their average temperature experienced naturally (28 °C), fish born in
summer were not affected by UV-B and showed lower damage and higher
antioxidant enzyme activities compared to the other acclimation
temperatures. In contrast, swimming performance of winter-caught fish was
negatively affected by UV-B at all acclimation temperatures, which was
paralleled by higher ROS-induced damage and antioxidant enzyme activities
that did not acclimate. However, metabolic scope was not reduced by UV-B
or temperature in any of the cohorts. Our results showed that
developmental conditions modify the capacity for acclimation later in
life, and that the interaction between developmental and acclimation
conditions can increase the resilience of animals to environmental
variability. These results have important implications for understanding
the evolution of acclimation, and for predictions of how climate change
affects animal performance.
Ghanizadeh et al FE all dataExcel file of all data used in the manuscript
Australia