Distribution of Pelagic Elasmobranchs Caught by Salmon Research Gillnets in the North Pacific

• Nakano Hideki

  National Research Institute of Far Seas Fisheries

• Nagasawa Kazuya

  National Research Institute of Far Seas Fisheries

書誌事項

タイトル別名

• Distribution of Pelagic Elasmobranchs C

抄録

The distribution of pelagic elasmobranchs was analyzed using bycatch data from the high seas salmon surveys by research gillnets from 1981 to 1991 in the North Pacific Ocean and the Bering Sea. Five species of sharks and one stingray were reported. Blue and salmon sharks and spiny dogfish were dominant and constituted 98% of the total shark catch. It is considered that the research area includes the southern part of the distribution for spiny dogfish and salmon sharks and the northern part of that for blue, shortfin mako, cookiecutter sharks and pelagic stingrays. These elasmobranchs showed spatial segregation by species in distribution according to oceanographic conditions. Intraspecific sexual and growth dependent segregations were also confirmed. Length frequency distributions of blue andsalmon sharks suggest that their nursery grounds exist around the transitionaldomain of the subarctic boundary.

収録刊行物

• Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ

  Ｆｉｓｈｅｒｉｅｓ　ｓｃｉｅｎｃｅ 62 (6), 860-865, 1996

  公益社団法人 日本水産学会

キーワード

• distribution
• elasmobranchs
• salmon survey
• segregation
• nursery ground
• North Pacific

詳細情報

• CRID: 1390282679406705152
• NII論文ID: 130003902943
• NII論文ID: 10004867941
• NII書誌ID: AA10993718
• DOI: 10.2331/fishsci.62.860
• NDL書誌ID: 4109744
• ISSN: 09199268
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4109744
• Web Site: https://www.jstage.jst.go.jp/article/fishsci1994/62/6/62_6_860/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可