Predation drives local adaptation of phenotypic plasticity

Area of Science:

• Evolutionary Biology
• Ecology
• Genetics

Background:

• Phenotypic plasticity is crucial for population persistence amid environmental variability.
• Genetic variation in plasticity suggests potential for local adaptation.
• Previous studies often examined single traits and limited populations, overlooking complex genetic interactions.

Purpose of the Study:

• To investigate the local adaptation of phenotypic plasticity across multiple traits and populations.
• To understand how predator regimes influence the genetic variation and evolution of plasticity.
• To explore the multi-trait, landscape-scale dynamics of plasticity adaptation.

Main Methods:

• Conducted a replicated, multi-trait experiment on Daphnia pulex in a predator-prey system.
• Analyzed data at a landscape scale across multiple populations.
• Assessed genetic variation in multivariate plasticity under different predation regimes.

Main Results:

• Identified predator regime-driven differences in the genetic variation of multivariate plasticity.
• Observed strong divergent selection linked to specific predation regimes.
• Found evidence supporting the local adaptation of phenotypic plasticity.

Conclusions:

• Population responses to environmental change are shaped by their past evolutionary conditions.
• Local adaptation of plasticity is a significant factor in ecological and evolutionary processes.
• A multi-trait, landscape-scale approach is essential for understanding plasticity evolution.