Locomotion-learning behavior relationship in following -ray irradiation

Sakashita, Tetsuya; Hamada, Nobuyuki*; Ikeda, Daisuke*; Suzuki, Michiyo; Yanase, Sumino*; Ishii, Naoaki*; Kobayashi, Yasuhiko

We investigated the effects of ionizing radiation (IR) exposure on the relationship between locomotion and salt chemotaxis learning behavior of . We found that effects of pre-learning irradiation on locomotion were significantly correlated with the salt chemotaxis learning performance, whereas locomotion was not directly related to chemotaxis to NaCl. On the other hand, locomotion was positively correlated with salt chemotaxis of animals which were irradiated during learning, and the correlation disappeared with increasing doses. These results suggest an indirect relationship between locomotion and salt chemotaxis learning in , and that IR inhibits the innate relationship between locomotion and chemotaxis, which is related to salt chemotaxis learning conditioning of .