Physiological dynamics, reproduction-maintenance allocations, and life history evolution

Area of Science:

• Evolutionary biology
• Physiological ecology
• Life history theory

Background:

• Resource allocation is central to life history trade-offs, impacting immunity, aging, and offspring quality.
• Understanding the link between physiological dynamics and evolutionary consequences is crucial.

Purpose of the Study:

• To develop a theoretical framework linking reproductive cell dynamics to fitness and life history.
• To explore the evolutionary consequences of resource allocation decisions between reproduction and repair.

Main Methods:

• Developed a theoretical model integrating cellular reproductive dynamics with population-level fitness.
• Analyzed the effects of investment in reproduction versus somatic/reproductive repair on selection and resource allocation.

Main Results:

• Cellular investment in protecting reproductive cells boosts fitness under high reproductive cell maturation or death rates.
• Population-level analysis shows cellular protection increases reproductive value and shapes optimal resource allocation to reproduction.

Conclusions:

• A multi-level fitness approach (cellular to population) is vital for understanding evolutionary trade-offs.
• Physiological resource allocation decisions, particularly at the cellular level, significantly influence broader life history evolution.