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Related Concept Videos

Responses to Heat and Cold Stress02:45

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Updated: Jun 17, 2026

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
07:54

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Published on: March 9, 2021

Nesting behaviour predicts heat tolerance evolution and climate vulnerability in bees.

Carmen R B da Silva1,2, Julian E Beaman3, James B Dorey3,4,5

  • 1Pollinator Futures Research Centre, School of Natural Sciences, Macquarie University, North Ryde, New South Wales, Australia. carmen.dasilva@mq.edu.au.

Nature Communications
|June 15, 2026
PubMed
Summary
This summary is machine-generated.

Wild bee heat tolerance evolves based on nesting behavior, not just climate. Understanding microclimates and nesting strategies is crucial for predicting species vulnerability to climate change.

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Climate Change Biology

Background:

  • Species' ability to adapt to rising temperatures is key to their climate change vulnerability.
  • Terrestrial ectotherm heat tolerance often shows weak correlation with current climates, suggesting evolutionary constraints.
  • Previous studies may have overlooked microclimate influences on local adaptation of heat tolerance.

Purpose of the Study:

  • To investigate the evolution of heat tolerance in Australian wild bees in relation to nesting behavior and microclimates.
  • To determine if nesting strategies (ground, cavity, stem) influence heat tolerance evolution.
  • To re-evaluate climate change vulnerability rankings for wild bees by incorporating nesting behavior.

Main Methods:

  • Examined heat tolerance across 95 wild bee species with diverse nesting habits across Australia.
  • Correlated nesting microclimate temperatures with evolved heat tolerance.
  • Analyzed phylogenetic inertia in heat tolerance and its relationship to shared nesting behaviors.

Main Results:

  • Nesting microclimate temperatures significantly predict heat tolerance evolution.
  • Stem-nesting bees evolved higher heat tolerances, while ground-nesting bees evolved lower tolerances.
  • Phylogenetic analysis revealed repeated adaptive evolution of heat tolerance linked to nesting behaviors, not strong constraints.

Conclusions:

  • Nesting behavior is a critical factor shaping wild bee heat tolerance and adaptation to climate change.
  • Microclimate use, driven by nesting strategy, allows bees to buffer against extreme heat.
  • Accurate assessment of climate change vulnerability requires integrating species' nesting ecology and microclimate interactions.