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Endocrinological Research on Hormonal Control of Salmon Homing Migration

Research Project

Project/Area Number 09460082
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field General fisheries
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

UEDA Hiroshi  Fac.of Fish., Hokkaido Univ., Asso.Pro., 水産学部, 助教授 (00160177)

Co-Investigator(Kenkyū-buntansha) KAERIYAMA Masahide  School of Eng., Hokkaido Tokai Univ., Pro., 工学部, 教授 (80305937)
NAITO Yasuhiko  National Institute of Polar Research, Po., 教授 (80017087)
SHOJI Takayuki  Grad.School of Pharm.Sci., Hokkaido Univ., Inst., 大学院・薬学研究科, 助手 (00241349)
URANO Akihisa  Grad.School of Sci., Hokkaido Univ., Pro., 大学院・理学研究科, 教授 (00142232)
HARA Akihiko  Fac.of Fish., Hokkaido Univ., Pro., 水産学部, 教授 (40091483)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥7,800,000 (Direct Cost: ¥7,800,000)
Fiscal Year 1998: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1997: ¥5,500,000 (Direct Cost: ¥5,500,000)
KeywordsChum salmon / Lacustrine sockeye salmon / Lacustrine masu salmon / Homing migration / Gonadal maturation / Gonadotropin-releasing hormone / Gonadotropin / Steroid hormone / 刷り込み / 嗅覚応答 / 嗅覚 / 視覚
Research Abstract

The salmon homing migration is closely related to gonadal maturation, which is regulated mainly by the brain-pituitary-gonadal axis. In particular, gonadotropin-releasing hormone (GnRH) produced from the olfactory system and the preoptic area, gonadotropin (GtH) from pituitary gland, and gonadal steroid hormones seem to play important roles in both the homing migration and gonadal maturation in salmonids. The present research presents the activation of salmon GnRH (sGnRH) gene in the preoptic area, the activation of GtHII gene in the pituitary gland, and the increase of serum 17alpha, 20beta-dihydroxy-4-pregnen-3-one (DHP) levels in chum salmon (Oncorhynchus keta) during the homing migration. The intramuscular GnRH analog (GnRHa) implantation is efficient to shorten homing duration in lacustrine, maturing sockeye salmon (0. nerka) of both sexes in early spawning season. The implantation causes dramatic activation of GtHII gene in the pituitary gland, and significant increases of serum DHP level. DHP implantation also shortenes homing duration in females, but not in males. The electrophysiological study suggests that the olfactory organ of masu salmon (0. masou) can discriminate the composition and concentration of amino acids in various freshwater odors regardless of sex and sexual maturity. The micro datalogger analysis hypothesize that temperature is not an important parameter for upstream migration in lacustrine masu salmon during the spawning season.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Ayako Sato: "Sexual differences in homing profiles and shortening of homing duration by gonadortropin-releasing hormone analog implantation in lacustrine sockeye salmon in Lake Shikotsu." Zoological Science. 14. 1009-1014 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hiroshi Ueda: "Correlations between homing, migration, and reproduction of chum salmon." North Pacific Anadromous Fish Commission Bulletin. 1. 112-117 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hiroshi Ueda: "Lacustrine sockeye salmon return straight to their natal area from open water using both visual and olfactory cues." Chemical Senses. 23. 207-212 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masahiro Fukaya: "Acceleration of gonadal maturation in anadromous migrating sockeye salmon by gonadotropin-releasing hormone analog implantation" Fisheries Science. 64. 948-951 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hiroshi Ueda: "Physiology and Ecology of Fish Migration" Memoirs of the Faculty of Fisheries, Hokkaido University, 60 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sato, A.: "Sexual differences in homing profiles and shortening of homing duration by gonadotropin-releasing hormone analog implantation in lacustrine sockeye salmon (Oncorhynchus nerka) in Lake Shikotsu." Zool.Sci.14. 1009-1014 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ueda, H.: "Correlations between homing, migration, and reproduction of chum salmon." N.Pac.Anadr.Fish.Comm.Bull.1. 112-117 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ueda, H.: "Lacustrine sockeye salmon return straight to their natal area from open water using both visual and olfactory cues." Chem.Senses. 23. 207-212 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Fukaya, M.: "Acceleration of gonadal maturation in anadromous migrating sockeye salmon by gonadotropin-releasing hormone analog implantation." Fish.Sci.64. 948-951 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ueda, H.: "Physiology and ecology of fish migration." Mem.Fac.Fish.Hokkaido Univ.44. 1-60 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hiroshi Ueda: "Correlations between homing, migration, and reproduction of chum saimon." North Pacific Anadromous Fish Commission Bulletin. 1. 112-117 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Hiroshi Ueda: "Lacustrine sockeye salmon retum straight to their natal area from open water using both visual and olfactory cues." Chemical Senses. 23. 207-212 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Takashi Kitahashi: "GnRH analog stimulates gonadotropin II gene expression in maturing sockeye salmon." Zoological Science. 15. 761-765 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Masahiro Fukaya: "Acceleration of gonadal maturation in anadromous migrating sockeye salmon by gonadotropin-releasing hormone analog implantation" Fisheries Science. 64. 948-951 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 上田 宏: "総説 サケ科魚類の母川回帰機構." 日本味と匂学会誌. 5. 109-118 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 上田 宏: "サケが生まれた川に帰ってくる仕組み:湖のサケをモデルとした解析." 現代化学. 335. 42-48 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Shuichi Hiraoka: "Changes in expression of neurohypophysial hormone genes during spawning migration in chuni salmon,Oncorhynchus keta." Journal of Molecular Endocrinology. 18. 49-55 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Ayako Sato: "Sexual differences in homing profiles and shortening of homing duration by gonadotropin-releasing hormone analog implantation in lacustrine sockeye salmon in Lake Shikotsu." Zoological Science. 14. 1009-1014 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Hiroshi Ueda: "Physiology and Ecology of Fish Migration" Memoirs of the Faculty of fisheries, Hokkaidou Univarsity. 44. 1-59 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 上田 宏: "森林の湖の関わり:サケ科魚類からのアプローチ" 北方林業. 50. 1-4 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Hiroshi Ueda: "Lacustrine sockeye salmon return straight to their natal area from open water using both visual and olfactory cues" Chemical Senses. 23(印刷中). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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