石狩湾におけるシャコの産卵期

• 鳥澤 雅

  北海道立網走水産試験場

• 三橋 正基

  北海道立稚内水産試験場

• 永井 雄幸

  株式会社フィッシャーマンズコンサルタント

書誌事項

タイトル別名

• Spawning Season of the Japanese Mantis Shrimp Oratosquilla oratoria(De Haan) in Ishikari Bay, Hokkaido, Japan.
• イシカリワン ニ オケル シャコ ノ サンランキ

抄録

The spawning season of the Japanese mantis shrimp Oratosquilla oratoria (De Haan) was examined in Ishikari Bay. The spawning season was estimated based on the temporal changes of female gonad somatic index (GSI) and sex ratio (number of female individuals/total number of individuals×100(%)) obtained from data between 1989 and 1991. The female GSI gradually increased from April to June, decreased in July, and began to increase again after October until November. However, GSI in November did not attain the value in the next spring. The sex ratio was low between mid June and July and high in May and November. Changes of sex ratio show the difference between male and female activities outside their burrows. The extreme low sex ratio is caused by the egg nursing behavior of females in the burrow. The spawning season of O. oratoria in Ishikari Bay was between June and July and once a year.

収録刊行物

• 日本水産学会誌

  日本水産学会誌 64 (3), 453-461, 1998

  公益社団法人 日本水産学会

キーワード

• シャコ
• 石狩湾
• 産卵期
• 性比
• 生殖腺指数

詳細情報

• CRID: 1390001206411462528
• NII論文ID: 10004853521
• NII書誌ID: AN00193422
• DOI: 10.2331/suisan.64.453
• ISSN: 1349998X
• ISSN: 00215392
• ISSN: http://id.crossref.org/issn/00215392
• NDL書誌ID: 4482241
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030572805
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4482241
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可