Development of techniques to improve seed quality of chum salmon by reduction of high density-dependent stress using dietary vegetable oil administration

• Project/Area Number: 15K07564
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aquatic bioproduction science
• Research Institution: Hokkaido Research Organization
• Principal Investigator: MIZUNO Shinya 地方独立行政法人北海道立総合研究機構, 水産研究本部さけます・内水面水産試験場, 主査 (70442655)
• Research Collaborator: UEDA Hiroshi ; URAWA Shigehiko
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: サケ / 高密度ストレス / 原虫病 / 亜麻仁油 / 健苗性 / サケ稚魚 / 高密度 / ストレス / コルチゾル / 脳下垂体 / 飼育密度

Outline of Final Research Achievements

Present study aimed at development of techniques to reduce high density-dependent stress and to prevent protozoan diseases in hatchery-reared juvenile chum salmon. Consequently, this study demonstrated that feeding of diet supplemented with linseed oil at 2% for at least successive 14 days reduced high density-dependent stress and prevented protozoan diseases in juveniles. In addition, it was suggested that pituitary-interrenal gland system controled the reduction of high density-dependent stress.

Research Products

• [Journal Article] Epidemiology of ectoparasitic protozoans, Ichthyobodo salmonis and Trichodina truttae, on wild chum salmon Oncorhynchus keta. (2017)
  • Author(s): Mizuno S., Urawa S., Miyamoto M., Saneyoshi H., Hatakeyama M., Koide N., Ueda H.
  • Journal Title: Diseases of Aquatic Organisms Volume: 126 Issue: 2 Pages: 99-109
  • DOI: 10.3354/dao03162
  • Peer Reviewed
• [Journal Article] Quantitative analysis of Ichthyobodo salmonis an ectoparasitic flagellate infecting juvenile chum salmon Oncorhynchus keta in hatcheries (2017)
  • Author(s): Mizuno S, Urawa S, Miyamoto M, Hatakeyama M, Koide N, Ueda H
  • Journal Title: Fisheries Science Volume: 83 Issue: 2 Pages: 283-290
  • DOI: 10.1007/s12562-016-1055-z
  • NAID: 40021171221
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] The epidemiology of the trichodinid ciliate Trichodina truttae on hatchery-reared and wild salmonid fish in Hokkaido (2016)
  • Author(s): Mizuno S, Urawa S, Miyamoto M, Hatakeyama M, Saneyoshi H, Sasaki Y, Koide N, Ueda H
  • Journal Title: Fish Pathology Volume: 51 Pages: 199-209
  • NAID: 130005289812
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 亜麻仁油添加飼料の給餌が高密度飼育されたサケ稚魚のストレス応答に与える効果 (2017)
  • Author(s): 水野伸也・浦和茂彦・佐々木義隆・上田宏
  • Organizer: 平成29年度日本水産学会春季大会
  • Place of Presentation: 東京海洋大学品川キャンパス
  • Year and Date: 2017-03-27
• [Presentation] Effects of dietary supplementation with oregano essential oil on prevention of ectoparasitic protozoans, Ichthyobodo salmonis and Trichodina truttae, and on physiology in juvenile chum salmon Oncorhynchus keta (2017)
  • Author(s): Mizuno S., Urawa S., Miyamoto M., Hatakeyama M., Koide N., Tada S., Okubo T., Inada K., Ueda H.
  • Organizer: 10th International Workshop on Salmonid Smoltification
  • Int'l Joint Research / Invited
• [Presentation] 紫外線照射による飼育用水の殺虫がサケ稚魚の原虫病予防に与える効果 (2016)
  • Author(s): 水野伸也・宮本真人・畑山誠・小出展久・佐々木義隆・浦和茂彦・上田宏
  • Organizer: 平成28年度日本水産学会秋季大会
  • Place of Presentation: 近畿大学農学部
  • Year and Date: 2016-09-09
• [Presentation] 亜麻仁油添加飼料の給餌がサケ稚魚の原虫病予防及び生理機能に与える効果 (2016)
  • Author(s): 水野伸也・宮本真人・畑山誠・小出展久・鈴木邦夫・浦和茂彦・大久保隆・稲田薫・上田宏
  • Organizer: 平成28年度日本水産学会春季大会
  • Place of Presentation: 東京海洋大学品川キャンパス
  • Year and Date: 2016-03-27
• [Presentation] オレガノ精油添加飼料の給餌によるサケ稚魚の原虫病予防技術実証試験 (2016)
  • Author(s): 水野伸也・宮本真人・畑山誠・小出展久・鈴木邦夫・浦和茂彦・大久保隆・稲田薫・上田宏
  • Organizer: 平成28年度日本水産学会春季大会
  • Place of Presentation: 東京海洋大学品川キャンパス
  • Year and Date: 2016-03-27