Embryo Selection and Mate Choice: Can 'Honest Signals' Be Trusted?

Area of Science:

• Evolutionary biology
• Reproductive science
• Behavioral economics

Background:

• Economic principle: "When a measure becomes a target, it ceases to be a good measure."
• Application to biological systems: mate choice and pregnancy.
• Concept of "proxy treadmill" driving trait evolution.

Purpose of the Study:

• To explore the application of the "measure as target" economic principle to biological phenomena.
• To explain the evolutionary escalation of signals in mate choice and pregnancy.
• To understand the dynamics of trait exaggeration through honest signaling.

Main Methods:

• Conceptual analysis applying economic principles to evolutionary biology.
• Examination of "honest signals" and their degradation when becoming targets.
• Analysis of trait elaboration and exaggeration as a result of selection pressures.

Main Results:

• The "measure as target" principle explains signal evolution in mate choice and pregnancy.
• Selection pressures cause "examinees" to exaggerate signals, degrading their honesty.
• A "proxy treadmill" emerges, leading to new indicators and trait exaggeration.
• Hormone signals in pregnancy show extreme evolutionary escalation.

Conclusions:

• Biological "measures" (signals) are subject to the "measure as target" effect.
• Evolutionary processes drive the exaggeration of signals, particularly in reproduction.
• Understanding this dynamic is key to comprehending complex evolutionary adaptations.