@article{oai:ir.kagoshima-u.ac.jp:00007835,
 author = {肥後, 伸夫 and 高山辺, 佳彦 and 安島, 幸典 and 田畑, 静夫 and 柿本, 亮 and 吐師, 弘},
 journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University},
 month = {2016-10-28},
 note = {Concerning the young of red sea bream (Chrysophnys major) numbering around 15000
released after making at the sea front in the open sea off Ibusuki City with the depth of 14m, in August 1981, the following investigations were carried out in the vicinity of the releasing
fronts, concerning the nursery artificial reef and the off shore concrete block reef, the
following results were obtained.
(1) The young of red sea bream in the vicnity of the releasing sea front formed a school of
thick dencity immediately after releasing. The school came to be reduced about 1/3 of the
original one on the 5th day, and on the 21st day, came to be dispersed, scattering into a lot of
groups containing about 500~1000 youngs respectively, on the 108th day confirmation was
made about the one group containing about 300 youngs. However, no youngs of red sea bream were noted in the concrete-block ones set at the off sea with the depth of 35~40m. The
proper location at which the grouped artificial reefs were to be set in the shore was
asstertained to be the crossing section at which the inclination of the sea-bottom changed
from the sharp one into the dull one in the vicinity of the sea front with the depth of 35~50m.
Around the location, a few natunal fishing rocks were noted here and there. Around the
artificial reefs were gathered large shaped fishes, such as Horse mackerel Trachurus japonicus, Rock breame, Oplegnathus fasciatus, Crimson sea bream, Evynnis japonica and Amberjacsk, Seriola aureovittata. Especially, the large sized artificial reef which was set at the sea front with the depth of 7m, and supplied with mountinous shape with
two heaps, showed a quite excellent fish gathering effect., 昭和56年8~11月,指宿市沖合の保育魚礁において,マダイの放流後の追跡調査を,またその沖合の3個所の人工魚礁において潜水観察を実施した。その結果は次の通りである。1) 放流点におけるマダイ群は,放流直後は密群を形成するが,5日目で約1/3に減少,21日目では500~1000尾の群に分かれ分散するようである。108日目では約300尾の群の存在することを確認した。2) 沖合の魚礁群は海底地形が急斜面から緩斜面に移行する水深35~50m付近に設置されている。この付近には天然礁が散在しており,マアジ,カマス,イシダイ,チダイ,ヒラマサ等の高級魚を多く蝟集せしめている。特に水深48mに設置されている大型魚礁は高さが7mの2山型をなし,優れた魚礁効果を有している。},
 pages = {193--205},
 title = {潜水観察による人工魚礁の実態について X : 指宿市沖合海域の場合},
 volume = {32},
 year = {}
}