Biological mechanisms of synchronous species alternations between the Kuroshio and Humboldt Current systems across the Pacific

2018 Fiscal Year Annual Research Report

• Project/Area Number: 26252031
• Research Institution: Fisheries Research and Education Agency
• Principal Investigator: 高須賀 明典 国立研究開発法人水産研究・教育機構, 中央水産研究所, グループ長 (00392902)
• Co-Investigator(Kenkyū-buntansha): 黒田 寛 国立研究開発法人水産研究・教育機構, 北海道区水産研究所, 主任研究員 (30531107) ; 奥西 武 国立研究開発法人水産研究・教育機構, 東北区水産研究所, グループ長 (60374576) ; 大関 芳沖 国立研究開発法人水産研究・教育機構, 本部, 研究等支援職員 (40371819) [Withdrawn]
• Project Period (FY): 2014-04-01 – 2019-03-31
• Keywords: 海洋生態 / 水産資源 / 魚種交替 / 黒潮海流域 / フンボルト海流域

Outline of Annual Research Achievements

本研究では、ペルー海洋研究所と所属機関が取り交わした共同研究覚書による強固な共同研究体制の下、それぞれの研究機関で長期に渡って実施されてきた産卵調査や資源評価のデータを完全に統一した手法で解析することで、黒潮海流域とフンボルト海流域におけるカタクチイワシとマイワシの生物特性を明らかにし、魚種間・海流域間の比較・統合を行う。これには、(I) 産卵生態 (産卵場特性・繁殖戦略・密度依存)、(II) 初期生態 (初期生活史における成長・摂餌)、(III) 資源生態 (漁業特性・資源生物特性) を総合的に加味する。また、(IV) 生物特性に対する海洋環境 (物理要因・生物要因) の変動を調べて仮説検証を行う。さらに、将来的に魚種交替予測モデルへ展開することを念頭に、(V) 数理モデル (輸送・回遊モデル) を構築して仮説検証に利用する。平成30年度は以下の成果を得た。
I. 産卵量の長期変動と環境変動及び資源変動の関係について、海流域間での比較結果を纏めた。II. フンボルト海流域のカタクチイワシの成長速度と環境の関係を調べた。III. 魚種交替と海洋環境変動・漁業の関係について、海流域間での比較結果を纏めた。IV. 海洋環境・動物プランクトンの長期変動・季節変動について、海流域間での比較結果を纏めた。V. 黒潮海流域の輸送・回遊モデルをフンボルト海流域に移植した。
以上を総合して、魚種交替の生物学的メカニズムに関する仮説を検証した。特に、海流域間で、環境要因に対する反応の魚種間関係が逆転しているため、表面水温の関係が逆であるにもかかわらず魚種交替が同期する、と考えられた。同時に、成果を南東ブラジル湾に拡張する後続研究を立案・準備した。本研究過程では、黒潮海流域において、資源管理の根本的仮定である産卵親魚量と卵生産量の比例関係の歪みの要因として、卵生産における密度効果の存在も発見した。

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] ペルー海洋研究所(ペルー)
  • Country Name: PERU
  • Counterpart Institution: ペルー海洋研究所
• [Int'l Joint Research] サンパウロ大学海洋研究所/国立大気海洋研究所(ブラジル)
  • Country Name: BRAZIL
  • Counterpart Institution: サンパウロ大学海洋研究所/国立大気海洋研究所
• [Int'l Joint Research] ケベック大学(カナダ)
  • Country Name: CANADA
  • Counterpart Institution: ケベック大学
• [Journal Article] Density dependence in total egg production per spawner for marine fish (2019)
  • Author(s): Takasuka, A., Yoneda, M., and Oozeki, Y.
  • Journal Title: Fish and Fisheries Volume: 20日 Pages: 125-137
  • DOI: 10.1111/faf.12327
  • Peer Reviewed
• [Journal Article] Variability of swept area by sea-surface tows of a neuston net: Balance of resistance, clogging, and over-inflow effects (2019)
  • Author(s): Takasuka, A., Nyuji, M., Kuroda, H., and Oozeki, Y.
  • Journal Title: Fisheries Research Volume: 210 Pages: 175-180
  • DOI: 10.1016/j.fishres.2018.10.021
  • Peer Reviewed
• [Journal Article] Synchronous multi-species alternations between the northern Humboldt and Kuroshio Current systems (2019)
  • Author(s): Oozeki, Y., Niquen, M., Takasuka, A., Ayon, P., Kuroda, H., Tam, J., Okunishi, T., Vasquez, L., Gutierrez, D., Okamura, H., and Guevara-Carrasco, R.
  • Journal Title: Deep Sea Research Part II Volume: 159 Pages: 11-21
  • DOI: 10.1016/j.dsr2.2018.11.018
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Revisiting daily age determination in juvenile anchoveta Engraulis ringens (2019)
  • Author(s): Plaza, G., Campana, S. E., Cerna, F., Takasuka, A., Rodriguez, C., Contreras, J. E., Moyano, G., Hernandez, A., and Gomez, M.
  • Journal Title: Marine and Freshwater Research Volume: - Pages: -
  • DOI: 10.1071/MF18307
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Kuroshio-induced nutrient supply in the shelf and slope region (2019)
  • Author(s): Kuroda, H.
  • Journal Title: Nagai, T. (ed.) AGU-Wiley Geophysical Monograph "Kuroshio Current: Physical, Biogeochemical, and Ecosystem Dynamics" Volume: 印刷中 Pages: 印刷中
  • Peer Reviewed
• [Journal Article] Climate change and interspecific interactions drive species alternations between anchovy and sardine in the western North Pacific: Detection of causality by convergent cross mapping (2018)
  • Author(s): Nakayama, S., Takasuka, A., Ichinokawa, M., and Okamura, H.
  • Journal Title: Fisheries Oceanography Volume: 27 Pages: 312-322
  • DOI: doi: 10.1111/fog.12254
  • Peer Reviewed
• [Journal Article] Introduction (2018)
  • Author(s): Aoki, I., Yamakawa, T., and Takasuka, A.
  • Journal Title: In: Aoki, I., Yamakawa, T., and Takasuka, A. (eds.) Fish Population Dynamics, Monitoring, and Management: Sustainable Fisheries in the Eternal Ocean. Fisheries Science Series. Springer, Tokyo Volume: - Pages: 1-11
  • DOI: 10.1007/978-4-431-56621-2_1
  • Peer Reviewed
• [Journal Article] Part I: Description (2018)
  • Author(s): Takasuka, A.
  • Journal Title: In: Aoki, I., Yamakawa, T., and Takasuka, A. (eds.) Fish Population Dynamics, Monitoring, and Management: Sustainable Fisheries in the Eternal Ocean. Fisheries Science Series. Springer, Tokyo Volume: - Pages: 15-18
  • DOI: 10.1007/978-4-431-56621-2_2
  • Peer Reviewed
• [Journal Article] Biological mechanisms underlying climate impacts on population dynamics of small pelagic fish (2018)
  • Author(s): Takasuka, A.
  • Journal Title: In: Aoki, I., Yamakawa, T., and Takasuka, A. (eds.) Fish Population Dynamics, Monitoring, and Management: Sustainable Fisheries in the Eternal Ocean. Fisheries Science Series. Springer, Tokyo Volume: - Pages: 19-50
  • DOI: 10.1007/978-4-431-56621-2_3
  • Peer Reviewed
• [Journal Article] Toward sustainable fisheries in the eternal ocean (2018)
  • Author(s): Yamakawa, T., Aoki, I., and Takasuka, A.
  • Journal Title: In: Aoki, I., Yamakawa, T., and Takasuka, A. (eds.) Fish Population Dynamics, Monitoring, and Management: Sustainable Fisheries in the Eternal Ocean. Fisheries Science Series. Springer, Tokyo Volume: - Pages: 229-245
  • DOI: 10.1007/978-4-431-56621-2_13
  • Peer Reviewed
• [Journal Article] Dual effects of reversed winter?spring temperatures on year‐to‐year variation in the recruitment of chub mackerel ( Scomber japonicus ) (2018)
  • Author(s): Kaneko, H., Okunishi, T., Seto, T., Kuroda, H., Itoh, S., Kouketsu, S., Hasegawa, D.
  • Journal Title: Fisheries Oceanography Volume: 28 Pages: 212-227
  • DOI: 10.1111/fog.12403
  • Peer Reviewed
• [Presentation] Application of ichthyoplankton data to studies on mechanisms of population dynamics of small pelagic fish (2019)
  • Author(s): Takasuka, A., Kuroda, H., Okunishi, T., Yoneda, M., and Oozeki, Y.
  • Organizer: The 1st Brazilian Ichthyoplankton Symposium (the 23rd Brazilian Ichthyology Meeting)
  • Int'l Joint Research / Invited
• [Presentation] 気候変動によるマサバ太平洋系群の産卵場の北上と産卵期間の延長 (2019)
  • Author(s): 金森由妃・髙須賀明典・西嶋翔太・岡村寛
  • Organizer: 第17回つくばE3セミナー「数理・統計モデルを用いて環境保全・資源管理の問題を検討する」
• [Presentation] 耳石解析から推定されたウルメイワシ成魚の成長 (2019)
  • Author(s): 中野瑠夏・髙須賀明典・入路光雄・亘真吾・西村明・大西修平
  • Organizer: 平成31年度日本水産学会春季大会
• [Presentation] Numerical experiments based on a coupled physical-biochemical ocean model to study the Kuroshio-induced nutrient supply on the shelf-slope region south of Japan (2018)
  • Author(s): Kuroda, H., Takasuka, A., Hirota, Y., Kodama, T., Ichikawa, T., Takahashi, D., Aoki, K., and Setou, T.
  • Organizer: International Symposium on "Understanding Changes in Transitional Areas of the Pacific"
  • Int'l Joint Research
• [Presentation] Effects of climate change on growth and migration of Pacific saury (Cololabis saira) in the North Pacific (2018)
  • Author(s): Ito, S., Setou, T., Okunishi, T., Takasuka, A., Yoshie, N., Kuroda, H., and Guo, C.
  • Organizer: The 4th International Symposium on "The Effects of Climate Change on the World's Oceans"
  • Int'l Joint Research
• [Presentation] Effects of climate change on growth and distribution of Japanese anchovy (Engraulis japonicus) larvae in the East China Sea (2018)
  • Author(s): Ito, S., Setou, T., Hasegawa, T., Kitajima, S., Takasuka, A., Yoshie, N., Okunishi, T., Takahashi, M., Yoneda, M., and Guo, C.
  • Organizer: The 4th International Symposium on "The Effects of Climate Change on the World's Oceans"
  • Int'l Joint Research
• [Presentation] A challenge to evaluate effect of climate change on Japanese anchovy (Engraulis japonicus) in the East China Sea IV (2018)
  • Author(s): Ito, S., Setou, T., Hasegawa, T., Kitajima, S., Takasuka, A., Yoshie, N., Okunishi, T., Takahashi, M., Yoneda, M., Amano, Y., Kojiguchi, H., and Guo, C.
  • Organizer: JpGU 2018
  • Int'l Joint Research
• [Presentation] Life in the fast lane: revisiting the fast growth - high survival paradigm during early life of fishes (2018)
  • Author(s): Robert, D., Sirois, P., Shoji, J., Takasuka, A., et al.
  • Organizer: The 42nd Annual Larval Fish Conference
  • Int'l Joint Research
• [Presentation] Density dependence at the time of spawning: Disentangling density-dependent effects in the life histories of fish (2018)
  • Author(s): Takasuka, A., Yoneda, M., and Oozeki, Y.
  • Organizer: The North Pacific Marine Science Organization (PICES) 2018 Annual Meeting
  • Int'l Joint Research
• [Presentation] Numerical experiments using a coupled physical-biochemical ocean model to study the Kuroshio-induced nutrient supply on the shelf and slope region south of Japan: Case study of Tosa Bay facing the Kuroshio (2018)
  • Author(s): Kuroda, H., Takasuka, A., Hirota, Y., Kodama, T., Ichikawa, T., Takahashi, D., Aoki, K., and Setou, T.
  • Organizer: The North Pacific Marine Science Organization (PICES) 2018 Annual Meeting
  • Int'l Joint Research
• [Presentation] Distribution, reproduction, and feeding of Symbolophorus californiensis (Teleostei: Myctophidae) mature adults in the Kuroshio region during late winter: Evidence of a southward spawning migration (2018)
  • Author(s): Sassa, C. and Takasuka, A.
  • Organizer: The North Pacific Marine Science Organization (PICES) 2018 Annual Meeting
  • Int'l Joint Research
• [Presentation] On the relationship between sea temperature and fishing ground formations of chub mackerel in the region off Sanriku, northwestern Pacific (2018)
  • Author(s): Okunishi, T., Hasegawa, D., Watanabe, C., Yukami, R., Watanabe, K.
  • Organizer: The North Pacific Marine Science Organization (PICES) 2018 Annual Meeting
  • Int'l Joint Research
• [Presentation] マサバ太平洋系群における産卵パターンと産卵場の長期変化 (2018)
  • Author(s): 金森由妃・髙須賀明典・西嶋翔太・岡村寛・市野川桃子
  • Organizer: 第34回個体群生態学会大会
• [Presentation] 小型浮魚類の生活史における密度効果の判別: 卵生産と卵から加入 (2018)
  • Author(s): 髙須賀明典・米田道夫・大関芳沖
  • Organizer: 2018年度水産海洋学会研究発表大会
• [Presentation] 冬季黒潮・黒潮続流域におけるサンマ仔稚魚分布の特徴 (2018)
  • Author(s): 冨士泰期・宮本洋臣・阿保純一・髙須賀明典
  • Organizer: 2018年度水産海洋学会研究発表大会
• [Book] Fish Population Dynamics, Monitoring, and Management: Sustainable Fisheries in the Eternal Ocean (2018)
  • Author(s): Aoki, I., Yamakawa, T., and Takasuka, A. (eds.)
  • Total Pages: 245
  • Publisher: Springer Japan (Japanese Society of Fisheries Science)
  • ISBN: 978-4-431-56619-9
• [Remarks] Research introduction website
  • URL: http://katsuo.fs.a.u-tokyo.ac.jp/takasuka/
• [Funded Workshop] Workshop on "Comparative study on biological processes of species alternations in the Kuroshio and Humboldt Current systems: Summary and future" (2018)