Study of predation avoidance mechanism of benthic animals through the learning for the smell of invaded predators in lake

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To investigate the predation avoidance behavior of chironomid larvae to the smell of exotic fish and to make sure the larval behavior whether taken over to the next generation、 some experiments were conducted in laboratory. As a result、 In case of Chironomus kiiensis larvae grew up in an environment that was exposed to the exotic fish smell water only、 the larvae showed no predation avoidance response to the fish smell water. On the other hand、 in case of C. kiiensis larvae were fed with blood water of same species larvae and the fish smell water、 when the larvae were expused to the fish smell water、 the larvae showed a predator avoidance behavior clearly which the search feeding time was shortened. However、 it was unknown that the reaction is either carried over to the next generations.