Effects of -ray irradiation on olfactory adaptation to benzaldehyde in

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

Using as a model organism for studying the nervous system, we investigated the effects of -ray irradiation on olfactory adaptation to benzaldehyde, in which animals show a decrease in chemotaxis to benzaldehyde. Irradiation during the conditioning for adaptation to benzaldehyde did not induce an additional decrease in chemotaxis immediately after irradiation. On the other hand, at 1 h after irradiation, the progress of adaptation to benzaldehyde was interrupted by -irradiation with the highest dose. These results indicate that impaired olfactory adaptation to benzaldehyde following -irradiation is different from salt chemotaxis learning in . Our findings suggest that the profile of radiation-induced response depends on the function of the nervous system in .