Abstract
In order to develop a durable bait for crustaceans, CD (a mixture of cyclodextrin and dextrin) was included in the cuttlefish-extract to control the release rate of cuttlefish-extract. Furthermore, the cuttlefish-extract included CD was kneaded with hydrophilic urethane resin, resulting in the softness similar to raw fishes which are conventionally used as baits for crustaceans. The release rate of the cuttlefish-extract that included CD was low compared with the extract without CD, indicating the effectiveness for the long-term use of the extract. The usefulness of the present cuttlefish-extract bait was demonstrated by the increase catch of crustaceans.
