How orca cultural transmission creates welfare benefits and vulnerabilities in populations facing environmental change.
Orca cultural transmission creates a unique welfare dimension where individual deaths can cause population-level knowledge loss. The hunting techniques, navigation knowledge, and social traditions transmitted through maternal lines represent accumulated cultural capital that cannot be quickly replaced. When experienced females die — from boat strikes, starvation, or contaminants — their knowledge dies with them. Southern Resident killer whales use specific Chinook salmon hunting techniques that depend on cultural transmission; as salmon populations decline and experienced hunters are lost, the population faces compounding welfare challenges. Protecting culturally experienced individuals has welfare value beyond their individual survival.