The movement of insects into new environments could upset the delicate balance of ecosystems.
, my colleagues and I assessed how well 102 species of insect can adjust their critical thermal limits to survive temperature extremes. We found that insects have a weak capacity to do so, making them particularly vulnerable to climate change.
Acclimation occurs within an animal’s lifetime . It’s the process by which previous exposure helps give an animal or insect protection against later environmental stress. Humans acclimate to intense UV exposure through gradual tanning which later protects skin against harmful UV rays. But evolution occurs over a longer period than acclimation and may not allow critical thermal limits to adjust in line with the current pace of global temperature rise. Upper thermal limits are particularlyResearch into how acclimation might help animals survive exceptional temperature rise has therefore become an area of growing scientific interest.
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