TY - JOUR
T1 - The Higher the Needs, the Lower the Tolerance
T2 - Extreme Events May Select Ectotherm Recruits With Lower Metabolic Demand and Heat Sensitivity
AU - Vajedsamiei, Jahangir
AU - Wahl, Martin
AU - Schmidt, Andrea Lee
AU - Yazdanpanahan, Maryam
AU - Pansch, Christian
N1 - Funding Information:
We would like to acknowledge Claas Hiebenthal, KIMOCC, and Ulrike Panknin for providing the Rhodomonas culture and technical assistance. We would also like to thank Bj?rn Bucholz for the maintenance of the KOB system and DO measurements during the long-term incubation. Funding. This work and JV were funded through the Deutsche Forschungsgemeinschaft (DFG) project: The neglected role of environmental fluctuations as a modulator of stress and driver of rapid evolution (Grant Number: PA 2643/2/348431475) and through GEOMAR. The project was also supported by EU project Aquacosm?731065 as well as the Cluster of Excellence ?The Future Ocean? funded within the framework of the Excellence Initiative by the DFG on behalf of the German federal and state governments. CP was funded by the postdoc program of the Helmholtz- Gemeinschaft Deutscher Forschungszentren and by GEOMAR.
Funding Information:
This work and JV were funded through the Deutsche Forschungsgemeinschaft (DFG) project: The neglected role of environmental fluctuations as a modulator of stress and driver of rapid evolution (Grant Number: PA 2643/2/348431475) and through GEOMAR. The project was also supported by EU project Aquacosm—731065 as well as the Cluster of Excellence “The Future Ocean” funded within the framework of the Excellence Initiative by the DFG on behalf of the German federal and state governments. CP was funded by the postdoc program of the Helmholtz-Gemeinschaft Deutscher Forschungszentren and by GEOMAR.
Publisher Copyright:
© Copyright © 2021 Vajedsamiei, Wahl, Schmidt, Yazdanpanahan and Pansch.
PY - 2021/3/23
Y1 - 2021/3/23
N2 - Ongoing climate warming demands a better understanding of whether or how the ectotherms that evolved in response to fluctuating stress regimes may acquire increased heat tolerance. Using blue mussels, Mytilus spp., a globally important and well-studied species, we provide empirical evidence supporting that (i) extremely warm (future) summer conditions may select rare recruits that are more capable of expressing metabolic (feeding and respiration) suppression and recovery in response to daily thermal fluctuations in mild to critical temperature range, (ii) this higher heat tolerance can be mediated by lower baseline metabolic demand, possibly decreasing the risks of heat-induced supply and demand mismatch and its associated stress during thermal fluctuations, and (iii) the capacity to acquire such heat tolerance through acclimation is minor. We discuss our results, methodological limitations and offer a perspective for future research. Further evaluation of mechanistic hypotheses such as the one tested here (based on the role of metabolic demand) is needed to generalize the significance of drivers of fast warm adaptation in ectothermic metazoan populations.
AB - Ongoing climate warming demands a better understanding of whether or how the ectotherms that evolved in response to fluctuating stress regimes may acquire increased heat tolerance. Using blue mussels, Mytilus spp., a globally important and well-studied species, we provide empirical evidence supporting that (i) extremely warm (future) summer conditions may select rare recruits that are more capable of expressing metabolic (feeding and respiration) suppression and recovery in response to daily thermal fluctuations in mild to critical temperature range, (ii) this higher heat tolerance can be mediated by lower baseline metabolic demand, possibly decreasing the risks of heat-induced supply and demand mismatch and its associated stress during thermal fluctuations, and (iii) the capacity to acquire such heat tolerance through acclimation is minor. We discuss our results, methodological limitations and offer a perspective for future research. Further evaluation of mechanistic hypotheses such as the one tested here (based on the role of metabolic demand) is needed to generalize the significance of drivers of fast warm adaptation in ectothermic metazoan populations.
KW - acclimation
KW - climate change
KW - energy budget
KW - heatwave
KW - metabolic depression
KW - variability
UR - http://www.scopus.com/inward/record.url?scp=85103887512&partnerID=8YFLogxK
U2 - 10.3389/fmars.2021.660427
DO - 10.3389/fmars.2021.660427
M3 - Article
AN - SCOPUS:85103887512
SN - 2296-7745
VL - 8
JO - Frontiers in Marine Science
JF - Frontiers in Marine Science
M1 - 660427
ER -