A ban on fishing for scallops in waters off the Sound of Jura, due to a build-up of naturally occurring Amnesic Shellfish Poisoning (ASP) toxins, was announced today by the Food Standards Agency Scotland.The action is based on test results from the Government's sampling programme which showed that the ASP toxin has reached a level at which there is a risk to consumers. Symptoms of ASP include nausea, vomiting, short-term memory loss and hallucinations.Scallops is the only species affected by this ban. No other commercially marketed shellfish are affected by today's action.