Performance, personality, and energetics: correlation, causation, and mechanism

Area of Science:

• Evolutionary biology
• Animal behavior
• Physiological ecology

Background:

• Phenotypic evolution studies often isolate complex traits and organisms.
• Individual variation analysis can integrate diverse biological levels (morphology, physiology, behavior, life history).
• Recent work links animal personality, energetics, and the pace-of-life syndrome.

Purpose of the Study:

• To illustrate the integration of pace-of-life syndrome and personality energetics within a broader paradigm.
• To review literature linking energy metabolism with animal personality traits.
• To identify future research directions for understanding trait correlations and mechanisms.

Main Methods:

• Conceptual review and synthesis of existing literature.
• Integration of physiology, performance, behavior, and fitness concepts.
• Examination of empirical examples from mammals and squamates.

Main Results:

• Demonstrates how individual variation bridges different biological study levels.
• Highlights the potential of a physiology-performance-behavior-fitness paradigm.
• Identifies a gap in research on performance, metabolic rate, personality, and fitness.

Conclusions:

• Integrating diverse approaches is crucial for studying phenotypic evolution.
• The proposed paradigm offers a framework to link energetics, personality, and fitness.
• Further research is needed on performance traits, metabolic rate, and personality links to fitness.