魚の遊泳馬力の測定-I : 目的と方法について

概要

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In order to measure swimming power of fishes, apparatus were contrived, and experiments were carried out using a mechanical approach. In this method, both towing and drag power of the fish are required together at the same time; but it is defective in that the drag power cannot be measured. To cover up this defect, fish are to be loaded with such heavy weight that swimming speed may be reduced below 1 m/s. Then, drag power requirement becomes negligibly small, and the rate of towing power increases. From these considerations, towing power output may be regarded as a virtual swimming power. Now, towing power of fishes is being measured under changeable conditions of various environmental factors; and investigation will be developed by using values of towing power as indicies of fish response against environmental stimuli. Besides, the results can also be used as a “feedback” factor for design of subsequent studies; and it will contribute to the improvement in our measuring technique.
公益社団法人日本水産学会の論文