Effect of KCl on the Larval Settlement and Metamorphosis of the Sea Urchin, Pseudocentrotus depressus.

• KAWAHARA Itsuro

  佐賀県水産振興課

• HIROSE Shigeru

  佐賀県水産振興課

• ITO Shiro

  佐賀県栽培漁業センター

• MIYAZAKI Yukio

  佐賀県栽培漁業センター

• KITAMURA Hitoshi

  長崎大学水産学部

Bibliographic Information

Other Title

• アカウニ幼生に対する塩化カリウムの変態誘起効果

Abstract

Larvae of sea urchin Pseudocentrotus depressus were induced to settle and metamorphose by exposure to sea water supplemented with KCl. The larvae responded to KCl within 10 min at KCl concentrations of 32-100 mM and within 60 min at 18 mM at 20°C. Response was completed in 60 min at KCl concentrations of 32-100 mM. Addition of 10, 18, 32, 56 and 100 mM KCl induced 7, 20, 53, 53 and 100% metamorphosis, respectively. However, the juveniles induced by KCl concentration higher than 32 mM could not settle normally. Production of 100% normally settling juveniles was obtained by a brief exposure (5 min) to 100 mM KCl added sea water followed by immediate transfer to untreated sea water. This procedure was effective in a wide range of sea water temperature (14-26°C) .

Journal

• Aquaculture Science

  Aquaculture Science 43 (2), 237-241, 1995

  Japanese Society for Aquaculture Science

Keywords

• アカウニ
• 塩化カリウム
• 変態誘起

Details

• CRID: 1390282679692989696
• NII Article ID: 10004769500
• NII Book ID: AN00124667
• DOI: 10.11233/aquaculturesci1953.43.237
• ISSN: 21850194
• ISSN: 03714217
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030570940
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • CiNii Articles
• Abstract License Flag: Disallowed