Improvement of larval survival rates by water agitation and medication in the seed production of snow crab Chionoecetes opilio

DOI JASI Web Site 5 Citations 25 References
  • KOGANE TAKAYUKI
    Obama Station, National Center for Stock Enhancement (NCSE), Fisheries Research Agency (FRA)
  • HAMASAKI KATSUYUKI
    Department of Marine Biosciences, Tokyo University of Marine Science and Technology
  • DAN SHIGEKI
    Yaeyama Station, Stock Enhancement Technology Section, Ishigaki Tropical Station, Seikai National Fisheries Research Institute, FRA

Bibliographic Information

Other Title
  • ズワイガニ種苗生産における飼育水の攪拌と薬浴による生残率の向上
  • ズワイガニ シュビョウ セイサン ニ オケル シイクスイ ノ カクハン ト ヤクヨク ニ ヨル セイザンリツ ノ コウジョウ

Search this article

Abstract

  Behavioral characteristics of snow crab Chionoecetes opilio larvae such as phototaxis and geotaxis in relation to their depth regulation were examined in the laboratory. Further, effects of agitation and bath treatment with sodium nifurstyrenate (NFS-Na) for larval rearing water on survival rates of larvae, rates of larvae which floated in the rearing water, and mortality rates of larvae which sunk to the bottom of the tank were investigated. The first stage zoeas floated in the upper layer of the rearing chamber showing positive phototaxis and negative geotaxis, however, almost all larvae of the later stages showed no reaction to a light stimulus and sunk to the bottom of the chamber. Larval floating rates and survival rates were improved by agitation and bath treatment with NFS-Na for rearing water; especially, survival rates significantly increased in the tanks with NFS-Na bath treatment.<br>

Journal

Citations (5)*help

See more

References(25)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top