東京湾の小型底曳網によるシャコの海上投棄量

• 大富 潤

  東京大学農学部水産学科

• 中田 尚宏

  神奈川県淡水魚増殖試験場

• 清水 誠

  東京大学農学部水産学科

書誌事項

タイトル別名

• Discarding of the Japanese Mantis Shrimp Oratosquilla oratoria by Small-Scale Trawlers in Tokyo Bay.
• トウキョウワン ノ コガタ ソコビキアミ ニ ヨル シャコ ノ カイジョウ ト

抄録

In Tokyo Bay small-scale trawlers discard considerable percentages of their catch of the Japanese mantis shrimp Oratosquilla oratoria, but no quantitative survey has so far been carried out. We aimed at making clear the actual fishing mortality, performed a monthly survey on discard percentages from April 1989 to April 1990 to discover seasonal changes, and estimated mortality rate after discarding through simultaneous on board experiments. The results revealed that both the discard percentage and the mortality of the discarded individuals are highest in summer, which was considered to be caused mainly by high air temperature. In total, individuals 2.4 times as large as those landed were discarded and died in a year.

収録刊行物

• 日本水産学会誌

  日本水産学会誌 58 (4), 665-670, 1992

  公益社団法人 日本水産学会

キーワード

• Aquatic Science

詳細情報

• CRID: 1390001206411259776
• NII論文ID: 130001545588
• NII論文ID: 10004851835
• NII書誌ID: AN00193422
• DOI: 10.2331/suisan.58.665
• ISSN: 1349998X
• ISSN: 00215392
• ISSN: http://id.crossref.org/issn/00215392
• NDL書誌ID: 3775425
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030502352
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3775425
• 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