Heat tolerance in social insects: molecular correlates and quantitative frameworks.

Area of Science:

• Zoology
• Molecular Biology
• Climate Change Biology

Background:

• Social insects' thermal limits critically influence their ecological roles and geographic distribution.
• Climate change necessitates understanding the molecular basis of insect heat tolerance.
• Current research often overlooks social insect stratification of thermal environments and lacks functional gene validation.

Purpose of the Study:

• To review current knowledge on molecular heat-stress responses in social insects.
• To identify significant conceptual gaps in the field.
• To advocate for improved methodologies for predicting insect resilience to thermal extremes.

Main Methods:

• Literature review of molecular heat-stress responses in social insects.
• Analysis of current research methodologies and their limitations.
• Identification of knowledge gaps in functional validation and thermal stress standardization.

Main Results:

• Existing studies primarily link molecular data to survival endpoints, limiting standardized thermal injury assessment.
• The role of social structure (castes, division of labor) in thermal stratification is underrepresented in molecular studies.
• Functional validation of key heat-tolerance genes remains scarce.

Conclusions:

• Integrating molecular assays with dose-based thermal frameworks is crucial for accurate predictions.
• Future research should incorporate social insect-specific behaviors and employ rigorous functional validation.
• Improved methodologies will enhance our understanding of social insect resilience to climate change.