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言語
日本語
タイトルヨミ
ナカウミ ホンジョウ コウク ニ オケル アサリ ノ セイチョウ ト セイザン ニ オヨボス シオドオシ ノ コウカ
著者
門脇 義雄
浜口 昌巳 瀬戸内海区水産研究所
藤森 恒至 島根大学総合理工学部地球資源環境科学科
立見 博俊 島根大学総合理工学部地球資源環境科学科
内容記述(抄録等)
Growth and survival rate 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 pipes for sea-water induction 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 lake bottom of 2 stations ; (1) Pipe-Front in Honjo and (2) Off-Eshima in Honjo Area. Growth, Survival rate 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. Shell growth is apparently higher among individuals set on 1.5m depth than on 4m depth, for both Pipe-Front and Off- Eshima stations. This low growth on 4m depth was supposed to be derived from combined factors such as lower dissolved oxygen, lower food supply, lower water current effect and so on. Mass mortality occurred around off Eshima Island in the end of July. This event was derived by concurrent death of sea algae, Cladofphora speciosa. The water current through the induction pipes appears to make better environment for animals enough to ayoid the influence of this mortal event. However the pipes could not avoid the low growth of Ruditapes on 4m depth.
主題
アサリ
成長
生残
中海
潮通しパイプ
掲載誌名
日本水産工学会誌
37
1
開始ページ
45
終了ページ
54
ISSN
0916-7617
ISSN(Online)
2189-7131
発行日
2000
DOI
出版者
日本水産工学会
出版者ヨミ
ニホン スイサン コウガッカイ
出版者別表記
The Japanese Society of Fisheries Engineering
資料タイプ
学術雑誌論文
部局
生物資源科学部