テナガエビ類の採集に用いるエビ籠の構造と使用人工餌料

• 中田 和義

  北海道大学大学院水産科学院海洋生物学講座

• 和田 信大

  独立行政法人水産大学校生物生産学科

• 荒木 晶

  独立行政法人水産大学校生物生産学科

• 浜野 龍夫

  独立行政法人水産大学校生物生産学科

書誌事項

タイトル別名

• Structure and Artificial Baits for Cage Traps to Capture Freshwater Palaemonid Shrimps
• テナガエビ類の採集に用いるエビ篭の構造と使用人工餌料
• テナガエビルイ ノ サイシュウ ニ モチイル エビカゴ ノ コウゾウ ト シヨウ ジンコウ ジリョウ

抄録

Structure and artificial baits for shrimp cage traps were studied to develop an effective method to capture freshwater palaemonid shrimps. We examined the effect of (i) artificial weed as shelter within the trap, (ii) the entrance diameter of the trap, and (iii) artificial baits that were developed as useful baits for a crab cage trap in a previous study on the capture efficiency of the shrimp trap. The artificial weed within the shrimp trap had no effect to increase the number of the palaemonid shrimps captured per trap, but the difference of the entrance diameter of the shrimp trap affected the total catch. The capture efficiency of palaemonid shrimps was higher in the shrimp traps with the entrance diameter of 40mm and 50mm compared with 31mm and the crab cage trap. An appropriate diameter of the shrimp trap was considered to be 40mm in terms of preventing the capture of Japanese mitten crab (Eriocheir japonica), which may cause decreases of the catches of the palaemonid shrimps as the crab often damages the shrimp trap. Both artificial bait 1 (formula feed used for eel culture; 100g) and bait 2 (bait 1 (80g) + both diet coated with squid entrail extract (20g) and krill extract (20g) ) were considered to be useful for the trap of the palaemonid shrimps and to be as effective as frozen saury (Cololabis saira) . To efficiently capture palaemonid shrimps we should use the shrimp trap with an entrance diameter of 40mm using bait 1 that is cheaper than bait 2. The results of field experiments at eight rivers, three lakes and one marsh demonstrated that the shrimp trap with the entrance size of 40mm and bait 1 can be effective to capture not only the palaemonid shrimps but other freshwater shrimps and crayfish.

収録刊行物

• 水産増殖

  水産増殖 53 (3), 263-274, 2005

  日本水産増殖学会

キーワード

• <I>Macrobrachium</I>
• Shrimp
• Cage trap
• Artificial bait

詳細情報

• CRID: 1390001204715659776
• NII論文ID: 10019350845
• NII書誌ID: AN00124667
• DOI: 10.11233/aquaculturesci1953.53.263
• ISSN: 21850194
• ISSN: 03714217
• NDL書誌ID: 7683894
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030721494
• Web Site: http://id.ndl.go.jp/bib/7683894
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7683894
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • Crossref
• 抄録ライセンスフラグ: 使用不可