In this Article, the ‘Predator–prey modelling’ section of the Methods shows Lotka–Volterra equations. Although these equations are meant to present a basic Lotka–Volterra model, the term ‘N/K’ in the second equation was inadvertently introduced during proofing, which makes the equations reflect the Piggyback-the-Winner model rather than basic Lotka–Volterra. The equation should have read:

rather than:

This change does not affect the conclusions of the paper, and has been corrected online.