448 マダイとクロダイのうろこに刻まれている隆起線の形成特性

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  • Characteristics of Circuli Profile Deposited on Fish Scale of Red Sea Bream and Black Sea Bream

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Evaluating and managing the fish resources has required statistic and accurate analysis of the growing carrier and environment of fish. Circuli deposited on fish scale could contribute to research them. A new technique of detecting the circuli using surface profilometer and analyzing by personal computer was presented by the authors. In this paper, the circuli deposited on the scale collected from the bodies of both red sea breams and black sea breams were analyzed by computer processing. Consequently, it was clarified that number of circuli changed and was proportional to the scale size and also the characteristic of circuli pitch of respective fishes were different.

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