<実験・調査報告>沖縄海域に設置したHS-ブロックの魚礁機能に関する調査について

概要

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To find out the environmental ecology and the gathering factor of fishes near artificial reefs, ten HS-blocks were placed on about 30 meter depth coral beach off Nagura bay, Ishigaki Island, Okinawa on October 25 1991. The role of artificial reefs as a tool for fishery reproduction rather than aggregating fishes was surveyed. Many Takasago, Caesio chrysozonus, aggregated around HS-blocks on December 23,1991 and August 26,1992. On August 26,about 28 kg weight big fish, Carrangoides coeruleopinnatus Ruppell, was caught around HS-blocks by fishing and a lot of hatched out juvenile fishes were found upper and sides part of HS-blocks by scuba diving. One role of HS-blocks aggregate many fishes and the other is going to make a hatched out base of many kind of fishes. A survey of this region revealed that the HS-blocks generally are considered beneficial.
北海道東海大学の論文
1993-03-20