News | UKMackerel could give birth to Tuna: Japanese scientists experiment to boost sushi fish stocks Substitute: tuna could be replaced with mackerel (Picture: Rex Features)Mark Blunden @_MarkBlunden6 February 2015Sushi diners could soon be eating hybrid mackerel as a substitute for threatened Pacific bluefin tuna.Fish specialists at Tokyo University of Marine Science and Technology are experimenting using mackerel as surrogate parents to bluefin.Tasty dish: fried mackerel with lemon (Picture: Rex Features)The technique works by taking baby mackerel, which have similar DNA to tuna, and injecting their reproductive organs with bluefin cells.Read MoreExclusive: Bao London to take Taiwanese buns off the street with new restaurantAre you ready for Ramengeddon? Where to eat Japanese noodle soup in LondonWhere to eat evening dim sum in LondonAs the mackerel mature, it is hoped the females will produce tuna eggs and the males will produce tuna sperm to create baby bluefins.Mackerel reproduce faster than tuna and are not endangered.MORE ABOUTJapanSushiTuna
