1. The study focused on its behavior ecology;trophotaxis reactions to different plant macerating solutions were observed so that to find out the best repellent against Hirudo nipponi.
   通过室内饲养与实验测定发现，引起日本医蛭寻觅寄主并向之运动的因素，有水波、体温（温源）、血液，排除了水响招引日本医蛭觅食的说法。

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