跳到主要内容

Chapter 27: Island Evolution and Isolation Genetics = Nature's Experiments

Islands are evolution's laboratories, where isolation amplifies and accelerates evolutionary processes. This chapter explores how ψ = ψ(ψ) behaves when confined to limited spaces with unique selective pressures.

27.1 The Island Syndrome​

Definition 27.1 (Insular Evolution): Predictable changes on islands: ψisland=ψmainland+Δisolation\psi_{\text{island}} = \psi_{\text{mainland}} + \Delta_{\text{isolation}}

Common modifications:

  • Size changes (gigantism/dwarfism)
  • Flight loss in birds/insects
  • Defense reduction
  • Ecological release
  • Behavioral tameness

27.2 Foster's Rule​

Theorem 27.1 (Island Size Rule): Size evolution depends on mainland size:

undefined