, Volume 188, Issue 4, pp 295-299
Date: 12 Apr 2002

Lifetime olfactory memory in the cricket Gryllus bimaculatus

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The time span of olfactory memory retention in the cricket Gryllus bimaculatus was studied. Third- or fourth-instar nymph crickets were trained to associate one odor with water and another odor with saline solution. At 6 weeks and 10 weeks after training, adult crickets exhibited significantly greater preferences for the odor associated with water over that associated with saline solution. The learned preference was altered when they were given reversal training at 6 weeks after training. We conclude that crickets are capable of retaining olfactory memory practically for their lifetime and of easily rewriting it in accordance with experience.