Larger workers outperform smaller workers across resource environments: An evaluation of demographic data using...

Area of Science:

• Ecology
• Behavioral Ecology
• Evolutionary Biology

Background:

• Quantifying the impact of different roles on social group population dynamics is challenging.
• Current methods often overlook how individual behaviors scale to population-level effects or ignore feedback loops.

Purpose of the Study:

• To investigate the effect of worker size distribution on bumblebee colony worker production.
• To demonstrate the application of functional linear models in analyzing complex ecological systems.

Main Methods:

• Utilized functional linear models to analyze data from 24 observational bumblebee colonies across three environments.
• Examined the relationship between worker size distribution and worker production.

Main Results:

• A higher proportion of larger workers positively influenced worker production.
• A higher proportion of smaller workers negatively impacted worker production.
• These effects were more pronounced in environments with low or fluctuating resources, indicating an advantage for colonies with larger workers under stress.

Conclusions:

• Worker size distribution significantly affects bumblebee colony production, particularly under resource-limited conditions.
• Functional linear models offer a valuable approach for studying high-dimensional ecological systems and complementing traditional experimental methods.