"Prey relationships" refers to the interaction and dependence between predators and their prey. It describes how certain animals hunt and eat other animals for survival. Full definition
The cats are introduced predators and not at all a part of the wildlife or natural predator prey relationships. (outthefrontdoor.com)
There are captivating predator - prey relationships happening right before her eyes, but she's not looking. (treehugger.com)
It also depletes the biodiversity of the fish ecosystem, and has the potential to disrupt predator - prey relationships in the food chain. (newscientist.com)