Do crayfish use the information carried by low-level electrical signals in the environment?

Abstract

Many vertebrates detect electric fields. Fish communicate electrically. No invertebrate has been shown to do so. We have evidence that crayfish change their behaviour following exposure to low-level, waterborne electrical signals. Crayfish behaviour is currently the preferred model for studying the neurobiology of social hierarchies in animals. Evidence that information is passing from either predators or conspecifics through an undescribed electrosensory channel would fundamentally change the direction of that research. Behaviour modification using electrical signals could also prove to be a valuable tool in crustacean aquaculture. This is a proposal to discover the nature and behavioural i..