@article{oai:ir.kagoshima-u.ac.jp:00007839,
 author = {肥後, 伸夫 and 吐師, 弘 and 荒井, 彰},
 issue = {1},
 journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University},
 month = {2016-10-28},
 note = {On the spot underwater observations were carried out on the concrete block submerged at
the off sea of Bounotsu Town, with the following results obtained.
(1) This time, observations were made on the reef submerged in the Akime Bay with the
water depth measuring 52-55m; this is a big scale reef consisting of a mixture of the old
blocks (1.5m)^<3> and the new ones deposited on to the old ones (1㎥). The shape of reef shows
two-dune-type, at the dented part of which it was possible for us to observe some schools of
seabream; Barface cardinalfish Apogon semilineatus, Red sea bream Chrysophrys major, as well
as a big school Chicken Grunt Parapristipoma trilineatum, presumably weighing no less than
two tons. (Observed on 14th, March 1981). Concerning the gathering effects of the reef on to
the fish schools, the old and small sized blocks showed better effects than others. And in the
case of the newly deposited larger sized ones, a lot of them were observed to have been in
a half-collapsed condition.
(2) In the case of the small scaled reef consisting of blocks submerged newly at the
sea-fronts with the depth measuring 32 m off a cape, named Inumodori-bana standing at the
Southern end of Bounotsu Town, the reef shows three-dune-type, and at the dented part of which we could observe some schools of Barface cardinalfish Apogon semilineatus, Grunt
Plectorhynchus cinctus, and Rock bream Oplegnathus fasciatus, as well as a big school of
Chicken Grunt Parapristipoma trilineatum, presumably weighing two tons. (Observed on 13th,
March 1984).
(3) The gathering patterns of the schools observed at the two kinds of reef are as
follows: it is at the dented part that the school of Chicken Grunt Parapristipoma trilineatum,
gathers and it is at the top of the saddle-back part of the dune situated at the upward
direction of the tide-current that a school of Barface cardinalfish Apogon semilineatus
gathers., 坊津町沖合に設置されているコンクリートブロック魚礁について潜水観察を実施した結果,次のような知見を得た。(1) 秋目湾の水深52~55mに設置してある魚礁は,古いブロック群の上に新しいブロック群を投入して出来た規模の大きな魚礁である。魚礁の形態は2山型をなし,凹みには推定2トンのイサキの大群の他,ネンブツダイ,マダイ等を観察した(1981年3月14日)。魚群の魚礁への付きは,古い小型のブロック群の方が良好である。また新しい大型のブロック群には半壊したものが多く認められた。(2) 坊津町の南端にある犬戻鼻の沖合,水深32mに設置してある新しいブロック群の魚礁は3山型の形態を有し,凹みには推定1トンのイサキの大群の他,ネンブツダイ,コショウダイ,イシダイ等を観察した(1984年3月13日)。(3) 両魚礁において観察した魚群の類似した蝟集行動は,イサキが魚礁の凹みに,ネンブツダイが魚礁の汐上み側の頂部に夫々密群を形成していることである。},
 pages = {133--143},
 title = {潜水観察による人工魚礁の実態について XIII : 坊津町沖合海域の場合},
 volume = {33},
 year = {}
}