Summary to the symposium issue: Primate fallback strategies as adaptive phenotypic plasticity--scale, pattern, and...

Area of Science:

• Primate Ecology
• Evolutionary Biology
• Paleoanthropology

Background:

• Fallback foods are crucial for understanding primate and hominin survival strategies.
• Existing research faces challenges in nomenclature, scale, and linking micro-level food responses to macro-level evolutionary patterns.

Purpose of the Study:

• To evaluate current understanding of fallback foods in primate and hominin ecology and evolution.
• To use challenges in the field as a framework for discussion and propose a new synthetic approach.

Main Methods:

• Literature review and conceptual analysis.
• Examination of challenges in defining and measuring fallback food strategies.
• Integration of individual-level food responses (process) with species-level traits (pattern).

Main Results:

• Nomenclature and scale present significant hurdles in studying fallback foods.
• A disconnect exists between understanding individual food use and species-level adaptations.
• A "synthetic" framework is proposed to better understand primate fallback strategies.

Conclusions:

• The discussion of primate fallback strategies should be broadened into a synthetic framework.
• Phenotypic plasticity is key to the evolutionary significance of fallback food strategies.
• A unified approach is needed to connect individual responses to food with evolutionary outcomes.