Dynamics of Laterality in the Cuttlefish through Interactions with Prey Prawns.

Predator-prey interactions based on laterality have recently been observed between fishes and their prey populations. Maintenance of antisymmetric dimorphism by frequency-dependent selection has been reported in fish, but has not been observed in invertebrates. Over 10 years, we investigated long-term changes in the "ratio of laterality" (frequency of righty morphs in a population) in the cuttlefish and its potential prey prawns and in the Visayan Sea, the Philippines.