2013 Fiscal Year Final Research Report
Elucidation of biological mechanisms of species alternations through spawning habitat analysis and intersystem comparison
| Project/Area Number |
22688017
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
General fisheries
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| Research Institution | Fisheries Research Agency |
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Principal Investigator |
TAKASUKA Akinori 独立行政法人水産総合研究センター, 中央水産研究所, 主任研究員 (00392902)
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| Research Collaborator |
OOZEKI Yoshioki 独立行政法人水産総合研究センター, 中央水産研究所, センター長 (40371819)
KURODA Hiroshi 独立行政法人水産総合研究センター, 北海道区水産研究所, 研究員 (30531107)
OKUNISHI Takeshi 独立行政法人水産総合研究センター, 東北区水産研究所, 研究員 (60374576)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 海洋生態 / 海洋資源 / 水産学 / 生態学 / 国際研究者交流 / 国際情報交換 / ペルー / カナダ |
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| Research Abstract |
The present study examined biological characteristics of anchovy and sardine mainly through spawning habitat analysis, to clarify biological mechanisms of species alternations, that is, the out-of-phase population oscillations between anchovy and sardine in response to climate changes. (1) Historical changes in spawning habitat at large spatial and temporal scales were described. (2) Mechanisms of spawning habitat formation at small spatial and temporal scales were understood. (3) Spawning responses to physical and biological factors were compared among the Kuroshio, California, and Humboldt Current systems. The spawning responses were dramatically different between the opposite sides of the Pacific, indicating that the biological characteristics are species-specific rather than genus-specific. (4) Growth-survival relationships during the early life stages of fish were reviewed to incorporate the biological characteristics into bioenergetics models in the future.
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[Remarks] ニュースレター (成果公表・アウトリーチ)
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[Remarks] Takasuka, A. et al. (2012) Workshops on growth-survival paradigm in early life stages of fish: the paradigm needs a synthesis. STAGES, 33 (2): 4-5
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[Remarks] Robert, D., Takasuka, A., et al. (2012) In Japan to review the growth-survival paradigm in fisheries oceanography. Québec-Océan Newsletter, 5: 3
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[Remarks] ワークショップ主催 (公開セミナー有)
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[Remarks] Japan-Canada collaboration workshop on "Growth-survival paradigm in early life stages of fish: theory, advance, synthesis, and future" Part III, Yokohama, Japan, November 8-15, 2013
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[Remarks] Workshop on "Comparative study on biological processes of species alternations in the Kuroshio and Humboldt Current systems : Information sharing and preliminary analysis", Yokohama, Japan, October 28 - November 1, 2013
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[Remarks] Japan-Québec collaboration workshop on "Growth-survival paradigm in early life stages of fish: theory, advance, synthesis, and future" Part II, Vancouver, Canada, May 23-26, 2012
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[Remarks] Japan-Québec collaboration workshop on "Growth-survival paradigm in early life stages of fish: theory, advance, synthesis, and future", Yokohama, Japan, October 26 - November 1, 2011
