Irradiating small animals used as fish food makes them bigger

THE WORLD’S fisheries are overexploited. One way to relieve pressure on them is to increase the yield of fish farms. And one way to do that is to improve the quality of the food fed to the livestock in those farms. Abe Tomoko, of the RIKEN Nishina Centre for Accelerator-Based Science, in Wako, Japan, has a novel proposal for doing this. In her role as director of the centre’s beam mutagenesis group, she has overseen the creation of 30 novel cultivars of crops and ornamental plants generated by the selective breeding of promising mutants created using radiation from a particle accelerator called the RI Beam Factory. This time, though, she has applied the technique to animals.