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Amphidromy related to genetic structure of a hybrid temperate bass population in Ariake Sea

Research Project

Project/Area Number 13460085
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

TANAKA Masaru  Graduate School of Agriculture, Kyoto Univ., Professor, 農学研究科, 教授 (20155170)

Co-Investigator(Kenkyū-buntansha) UEDA Hiroshi  Center for Marine Environmental studies, Ehime University, Associate Professor, 沿岸環境科学研究センター, 助教授 (00128472)
FUJIWARA Tateki  Graduate School of Agriculture, Kyoto Univ., Associate Professor, 農学研究科, 助教授 (30243075)
NISHIDA Mutsumi  Ocean Research Institute, Univ. of Tokyo, Professor, 海洋研究所, 教授 (90136896)
NAKAYAMA Kouji  Graduate School of Agriculture, Kyoto Univ., Assistant Professor, 農学研究科, 助手 (50324661)
TAGAWA Masatomo  Graduate School of Agriculture, Kyoto Univ., Associate Professor, 農学研究科, 助教授 (20226947)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥13,400,000 (Direct Cost: ¥13,400,000)
Fiscal Year 2002: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 2001: ¥9,500,000 (Direct Cost: ¥9,500,000)
KeywordsAriake temperate bass / hybrid population / amphidromy / Chikugo river estuary / mitocondrial DNA / otolith microchemistry / otolith daily ring / Shinocalanus sinensis
Research Abstract

It has been demonstrated that there is a very unique hybrid population between Japanese temperature bass Lateolabrax japonicus and Chinese temperate bass Lateolabrax sp. exists in Ariake Sea. The Ariake temperate bass has been known to immigrate into freshwater area during the early juvenile period. The present research was conducted to confirm existence of amphidromous migration and genetic intra-population structure of the Ariake temperate bass.
1) Otolith microstructure analyses revealed the spawning occurred between late November and mid. February with a peak of late December. The larvae appeared around the Chikugo river estuary at about 16mm SL and 80 days of age, then shifted their habitat to freshwater area at about 18mm and 100 days. Fish size collected at the upper reach of the river was larger than that at the lower reach. Hatch-date and length distributions were not different between river-ascended juveniles and non-ascended juveniles collected at Omuta tidal flat area.
2) Oto … More lith Sr/Ca trajectories of 0-group fish were roughly divided into early freshwater ingress and non-freshwater ingress groups. Proportion of freshwater ingress group fluctuated annually between 50% and 20%. Otolith microchemistry for spawing adult fish suggested 2 different groups, Shimabara group included fish with freshwater experience during the early life stage and Misumi group didn't show freshwater experience.
3) Mitochondria-DNA analyses showed quite different genetic features between the different spawning grounds ; the adult fish collected from Shimabara had a very high percentage of Chinese haplotype (85%), whereas a very low percentage (26%) in the adult fishes from Misumi. These findings suggest that there are at least two subpopulations of temperate bass in Ariake Sea ; the one more highly influenced by Chinese temperate bass gene has a potential of amrphidromous freshwater ingress and the other one with less influenced by Chinese gene doesn't have amphidromous potential. Migration to freshwater during the early life stage was speculated to be determined by 2 main factors, that is genetic background of subpopulation and biotic/abiotic environmental conditions after spawning.
4) All of the continental relict fishes endemic to Ariake Sea were found primarily dependent on a brakish water copepod Sinocalanus sinensis during the late larvae and early juvenile periods. This endemic and continental relict copepod was speculated to largely contribute to freshwater ingress of the Ariake temperate bass as an essential food resource prior to the habitat shift into freshwater. Distribution of this species in Ariake Sea was restricted to the bottom of the bay and to estuaries with highly turbid water. Less

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 日比野学, 木下 泉, 太田太郎, 田中 克: "筑後川河口で採集されたアリアケシラウオ仔魚の形態"魚類学雑誌. 49・2. 103-108 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 日比野学, 太田太郎, 木下 泉, 田中 克: "有明海湾奥部の干潟汀線域に出現する仔稚魚"魚類学雑誌. 49・2. 109-120 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中山耕至: "有明海個体群の内部構造"スズキと生物多様性-水産学シリーズ. 131. 127-139 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] D.H.Secor, 田中 克: "スズキ類の河口域依存性と生活史の進化"スズキと生物多様性-水産学シリーズ. 131. 140-152 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 田中 克, 木下 泉(編): "スズキと生物多様性-水産資源生物学の新展開"恒星社厚生閣. 155 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hibino, M.: "Early life history diversity of the Ariake population"Fisheries series 131. 65-78 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ohta, T.: "Migration history estimated from otolith information"Fisheries series 131. 91-102 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hirai, N.: "Physiology of osmoregulation"Fisheries series 131. 103-102 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Nakayama, K.: "Intra-structure of the Ariake population"Fisheries series 131. 127-139 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Secor, D., H., M. Tanaka: "Estuarine dependency and life history evolution"Fisheries series 131. 140-152 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hirai, N., M. Tagawa, T. Kaneko, D. H. Secor, M. Tanaka: "Freshwater adaptation in Japanese sea bass and striped bass : A comparison of chloride cell distribution during their early life history"Fisheries Science. 68 (Supplement I). 433-434 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hibino, M., I. Kinoshita, T. Ohta, M. Tanaka: "Morohology of Ariake icefish Salanx ariakensis larvae in the Chikugo estuary"Japanese Journal of Ichthyology. 49(2). 103-108 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hibino, M., T. Ohta, I. Kinoshita, M. Tanaka: "Fish larvae and juveniles occurring in the littoral zone of a tidal flat, in the bottom of Ariake Bay"Japanese Journal of Ichthyology. 49(2). 109-120 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Makino, N., Y Matumaru, M. Tanaka: "Effects of Temperature and Salinity on Egg Development of the Japanese Sea Bass, Lateolabrax japonicus"SUISANZOSHOKU. 51(1). 55-64 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Ueda, H., F. Okada, M. Azuma: "Temporal changes of zooplankton in the detention pond closed off in 1997 from Isahaya Bay, Kyusyu, in relation to desalination"Plank. Boil. ecol.. 50(1). 10-16 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tanaka, M., I. Kinoshita(eds): "Temperate bass and biodiversity - New perspective for fisheries biology"Fisheries series 131, Koseisya-koseikaku, Tokyo. 155 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 日比野学, 木下泉, 太田太郎, 田中克: "筑後川河口で採集されたブリアケシラウオ仔魚の形態"魚類学雑誌. 49・2. 103-108 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 日比野学, 太田太郎, 木下泉, 田中克: "有明海湾奥部の干潟汀線域に出現する仔稚魚"魚類学雑誌. 49・2. 109-120 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中山耕至: "有明海個体群の内部構造"スズキと生物多様性-水産学シリーズ. 131. 127-139 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] D.H.Secor, 田中克: "スズキ類の河口域依存性と生活史の進化"スズキと生物多様性-水産学シリーズ. 131. 140-152 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 田中克, 木下泉(編): "スズキと生物多様性-水産資源生物学の新展開"恒星社厚生閣. 155 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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