異なる塩水条件下におけるアユ孵化仔魚の飢餓プロセス

• 井口 恵一朗

  水産総合研究センター中央水産研究所

• 坂野 博之

  水産総合研究センター中央水産研究所

• 武島 弘彦

  東京大学大気海洋研究所

書誌事項

タイトル別名

• Starving Process of Ayu Hatchlings under Different Saline Water Conditions
• コトナル エンスイ ジョウケン カ ニ オケル アユフカシギョ ノ キガ プロセス

抄録

Ayu Plecoglossus altivelis is migratory fish that experiences estuarine backish water in the early life stages. The recent decline in the abundance of populations that ascend into rivers is of concern for freshwater fisheries. The present study aims to elucidate the starving process that determine the early success of ayu hatchlings under the variable environmental conditions in terms of salinity and water temperature. Transition from endogenous feeding state to irrecoverable starved state occurred at the time when the yolk-sac became unnoticeable, a couple of days before being consumed to death accordingly to the water conditions. RNA/DNA revealed that high salinity and high water temperature together required more cost for maintenance including osmoregulation, resulting in the acceleration of yolk depletion and led to reduced metabolic activity. Seawater with a high temperature is considered to have an adverse effect on the survival of newly hatched larvae.

収録刊行物

• 水産増殖

  水産増殖 58 (4), 459-463, 2010

  日本水産増殖学会

キーワード

• <I>Plecoglossus altivelis</I>
• Endogenous feeding
• Saline water
• RNA/DNA

詳細情報

• CRID: 1390001204720456448
• NII論文ID: 10029846860
• NII書誌ID: AN00124667
• DOI: 10.11233/aquaculturesci.58.459
• ISSN: 21850194
• ISSN: 03714217
• NDL書誌ID: 10954303
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030810726
• Web Site: http://id.ndl.go.jp/bib/10954303
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10954303
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN
  • Crossref
• 抄録ライセンスフラグ: 使用不可