<調査報告>水槽実験によるエゾアワビ稚貝の行動観察

概要

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Through the experiments, we examined the effects of flow on the velocity of movement of abalone, Haliotis discus hannai INO, in a one-way canal and also the maximum flow velocity that allows abalone to capture trembling kelp in a reciprocating flow generator. The major results of the experiments are : 1) A comparison between the movement of abalone against and with the stream flow shows that the velocity of flowing water affects the velocity of movement of abalone differently. When abalone move against the stream, their velocity of movement increases until the flow velocity reaches a certain level, but it decreases at the greater flow velocity due to fluid resistance. When abalone go with the stream flow, their velocity of movement is not affected by the changes in the velocity of flowing water. 2) The feeding behavior of abalone is most active at the amplitude of the flow velocity of 10 cm/s and becomes less active as the velocity increases. 3) The amplitude of the maximum flow velocity that allows abalone to capture trembling kelp in a reciprocating flow is 80 cm/s.
北海道東海大学の論文
1999-03-25