Data from: Rapid induction of the heat hardening response in an Arctic insect

• Main Authors: Sørensen, Mathias, Kristensen, Torsten, Lauritzen, Jannik, Noer, Natasja, Høye, Toke, Bahrndorff, Simon
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2019
• Subjects: Heat hardening; heat knock down; critical thermal maxima; hardening; reversibility; greenlandic; Subarctic
• Online Access: https://doi.org/10.5061/dryad.tm06n0p

The ability to cope with increasing and more variable temperatures, due to predicted climate changes, through plastic and/or evolutionary responses will be crucial for the persistence of Arctic species. Here, we investigate plasticity of heat tolerance of the Greenlandic seed bug Nysius groenlandicus, which inhabits areas with widely fluctuating temperatures. We test the heat resistance and hardening capacity (plasticity) of N. groenlandicus using both static (heat knock down time, HKDT) and dynamic (critical thermal maximum, CT max ) assays. We find that N. groenlandicus is able to tolerate short-term exposure to temperatures up to almost 50°C and that it can quickly increase heat resistance following heat hardening. Further, we find that this hardening response is reversible within hours after hardening. These findings contrast with common observations from temperate and tropical insects and suggest that more attention should be given to species in extreme and thermally variable environments such as Arctic and subarctic regions. Hardening during temperature ramping (Figure 1) Heat hardening and recovery time (Figure 2a) Thermal exposure time (Figure 2b) Figure S2 (Heat hardening and recovery time) Supplementary data Figure S3 (Heat hardening and recovery time) Supplementary data