Generalized Stressors on Hive and Forager Bee Colonies

Area of Science:

• Ecology and Environmental Science
• Mathematical Biology
• Agricultural Science

Background:

• Hive-forming bees are crucial for agricultural sustainability and ecosystem health.
• Worldwide bee decline, especially honeybees in the US, necessitates understanding stressor impacts.
• Previous research utilized mathematical models and experiments to study colony stress and collapse disorder.

Purpose of the Study:

• To integrate and enhance existing mathematical models into a single, analytically tractable framework.
• To develop a novel model incorporating lethal and sublethal stressors with generalized attributes.
• To investigate the causes of colony collapse disorder (CCD) using a refined modeling approach.

Main Methods:

• Synthesized and enhanced major mathematical models from the past decade.
• Employed a traditional disease modeling framework to incorporate lethal and sublethal stressors.
• Generalized stressor attributes: transmissibility, impairment level, lethality, duration, and temporal occurrence.

Main Results:

• The model was validated against emergent biological characteristics of bee colonies.
• Demonstrated that precocious foraging and labor destabilization can lead to colony collapse disorder.
• Identified that thresholds for CCD are dependent on stressor characteristics and timing.

Conclusions:

• The developed model provides a unified and enhanced approach to understanding bee colony stressors.
• Precocious foraging and labor destabilization are identified as key mechanisms driving colony collapse disorder.
• Highlights the critical role of stressor attributes and timing in determining colony viability, motivating further research.