Thermal acclimation and habitat-dependent differences in temperature robustness of a crustacean motor circuit

Frontiers in Cellular Neuroscience

Cellular Neuroscience

Gabriela Torres¹  Noé Espinosa-Novo¹  Jan Phillipp Geißel²  Luis Giménez³  Steffen Harzsch⁴  Andrés Vidal-Gadea⁵  Wolfgang Stein⁶ 

[1] Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Germany;Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Germany;Department of Cytology and Evolutionary Biology, Zoological Institute and Museum, University of Greifswald, Greifswald, Germany;Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Germany;School of Ocean Sciences, Bangor University, Bangor, United Kingdom;Department of Cytology and Evolutionary Biology, Zoological Institute and Museum, University of Greifswald, Greifswald, Germany;School of Biological Sciences, Illinois State University, Normal, IL, United States;School of Biological Sciences, Illinois State University, Normal, IL, United States;Stiftung Alfried Krupp Kolleg Greifswald, Greifswald, Germany;

关键词: stomatogastric ganglion;    central pattern generation;    climate change;    degeneracy;    acclimatization;    phase constancy;    robustness;   

DOI  :  10.3389/fncel.2023.1263591

 received in 2023-07-20, accepted in 2023-09-29,  发布年份 2023

来源: Frontiers

【 摘 要 】

IntroductionAt the cellular level, acute temperature changes alter ionic conductances, ion channel kinetics, and the activity of entire neuronal circuits. This can result in severe consequences for neural function, animal behavior and survival. In poikilothermic animals, and particularly in aquatic species whose core temperature equals the surrounding water temperature, neurons experience rather rapid and wide-ranging temperature fluctuations. Recent work on pattern generating neural circuits in the crustacean stomatogastric nervous system have demonstrated that neuronal circuits can exhibit an intrinsic robustness to temperature fluctuations. However, considering the increased warming of the oceans and recurring heatwaves due to climate change, the question arises whether this intrinsic robustness can acclimate to changing environmental conditions, and whether it differs between species and ocean habitats.MethodsWe address these questions using the pyloric pattern generating circuits in the stomatogastric nervous system of two crab species, Hemigrapsus sanguineus and Carcinus maenas that have seen a worldwide expansion in recent decades.Results and discussionConsistent with their history as invasive species, we find that pyloric activity showed a broad temperature robustness (>30°C). Moreover, the temperature-robust range was dependent on habitat temperature in both species. Warm-acclimating animals shifted the critical temperature at which circuit activity breaks down to higher temperatures. This came at the cost of robustness against cold stimuli in H. sanguineus, but not in C. maenas. Comparing the temperature responses of C. maenas from a cold latitude (the North Sea) to those from a warm latitude (Spain) demonstrated that similar shifts in robustness occurred in natural environments. Our results thus demonstrate that neuronal temperature robustness correlates with, and responds to, environmental temperature conditions, potentially preparing animals for changing ecological conditions and shifting habitats.

【 授权许可】

Unknown   
Copyright © 2023 Stein, Torres, Giménez, Espinosa-Novo, Geißel, Vidal-Gadea and Harzsch.