ダウンロード数 : ?
タイトルヨミ
ナカウミ ホンジョウ スイイキ ニオケル アサリ ノ セイザン ト セイチョウ カンレンスル ヨウイン ノ ヨサツ ト シオ トオシ パイプ ノ コウカ ノ ケントウ
日本語以外のタイトル
Survival and growth of Ruditapes philippinarum in Honjo Area of Lake Nakaumi, southwest Japan
ファイル
言語
日本語
著者
門脇 義雄
藤森 恒至
立見 博俊
内容記述(抄録等)
Survival rate and growth were examined for adult Ruditapes philippinarum in Honjo Area of Lake Nakaumi. This area is a brackish lake enclosed by embankments built for reclamation. Two tidal flow pipes of 2.5m in diameter were constructed on March 1998, to investigate potential of fishery promotion. Containers carrying 50 individuals of Ruditapes each were set on the lake bottom of 3 stations; (1) Pipe-front in Honjo (2) Off-Eshima in Honjo and (3) West Channel around Honjo. Survival rate, growth and water quality (temperature, salinity, dissolved oxygen) were examined between 1.5m and 4m in water depth for these stations, from June 4 to November 5 in 1998. Survival rates of Pipe-front were higher than those of Off-Eshima, mainly because mass mortality occurred around off Eshima Island in the end of July. This event was observed as formation of anoxic and hydrosulfide-rich water layer, or masking of the surface that derived by concurrent death of sea algae, Cladophora speciosa. The water current through the tidal flow pipes appeared to make animals avoid the influence of the mortal event around them. Shell growth was apparently higher among individuals set on 1.5m depth than on 4m depth, for both Pipe-Front and Off-Eshima stations.
主題
growth
Honjo-area
Ruditapes
survival rate
tidal flow pipes
掲載誌名
Laguna : 汽水域研究
6
開始ページ
145
終了ページ
156
ISSN
21852995
発行日
1999-03
NCID
AN10439529
出版者
島根大学汽水域研究センター
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
部局
研究・学術情報本部 エスチュアリー研究センター
他の一覧