Effects of Sea-Water Induction Pipes to Growth and Survival of Ruditapes philippinarum in Honjo Area of Lake Nakaumi, Southwest Japan

• YAMAGUCHI Keiko

  Faculty of Life and Environmental Science, Shimane University

• KADOWAKI Yoshio

• HAMAGUCHI Masami

  National Research Institute of Fisheries and Environment of Inland Sea

• FUJIMORI Koji

  Department of Geoscience, Faculty of Science and Engineering, Shimane University

• TATSUMI Hirotoshi

  Department of Geoscience, Faculty of Science and Engineering, Shimane University

Bibliographic Information

Other Title

• 中海・本庄工区におけるアサリの成長と生残に及ぼす潮通しの効果
• 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 シオトオシ ノ コウカ

Abstract

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.

Journal

• Journal of Fisheries Engineering

  Journal of Fisheries Engineering 37 (1), 45-54, 2000

  The Japanese Society of Fisheries Engineering

Keywords

• Ruditapes
• Growth
• Survival
• Lake Nakaumi
• Sea-Water induction

Details

• CRID: 1390564237989355392
• NII Article ID: 10012758495
• NII Article ID: 10008273737
• NII Book ID: AN10278554
• DOI: 10.18903/fisheng.37.1_45
• ISSN: 21897131
• ISSN: 09167617
• NDL BIB ID: 5459765
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010661186
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5459765
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed