アサリ人工産卵における産卵量および卵径と，卵・幼生の生き残りの関係

• 鳥羽 光晴

  千葉県栽培漁業センター

• 深山 義文

  千葉県東京湾栽培漁業センター

書誌事項

タイトル別名

• The Relationships of the Number of Spawned Eggs and Egg Diameter with Performance of Embryos and Larvae in Artificial Spawning of Manila Clam, Ruditapes Philippinarum.

抄録

The relationships of the number of spawned eggs per unit shell size [NUSS=number of spawned egg×shell length (mm) ^-1×shell width (mm) ^-1×shell height (mm) ^-1] and egg diameter with the performance of embryos and larvae (fertilization rate, hatching rate, rate of normal-shaped larvae, and larval survival) were examined in order to develop an index for the evaluation of egg and larval viability in hatchery operation of Manila clam, Ruditapes philippinarum. Although small NUSS (<99) resulted in variable survival, large NUSS were always associated with high survival. Thus, NUSS may be used to predict the viability of embryos and larvae. High frequency of small NUSS (>80%), which observed in both wild and reared broodstock, indicated that the importance of the use of fully ripe broodstock for spawning induction. No relationship was observed between egg diameter and early survival of the embryos and larvae. High percentage of feeding among first feeding larvae generally assured good survival.

収録刊行物

• 水産増殖

  水産増殖 43 (3), 315-321, 1995

  日本水産増殖学会

キーワード

• アサリ
• 初期生残
• 産卵量
• 卵径

詳細情報

• CRID: 1390001204715385856
• NII論文ID: 10004769606
• NII書誌ID: AN00124667
• DOI: 10.11233/aquaculturesci1953.43.315
• ISSN: 21850194
• ISSN: 03714217
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010570947
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可