The experiments were terminated either because it was not possible to get sufficient
fresh food to support the juveniles, or because the faster growing juveniles were large
enough to cause concerns about the rearing container restricting growth. Juveniles were
euthanased by chilling to ensure no damage to tissues and that animals were intact for
removal of tissues and statoliths. Chilling is the recommended method of euthanasia for
tropical cephalopods (Roper and Sweeney, 1983). Only the muscle tissue was analysed