Unanticipated effect of seawater temperature rise on benthic populations in warm temperate shores
| Project/Area Number |
26440244
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Nagasaki University |
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Principal Investigator |
TAMAKI Akio 長崎大学, 水産・環境科学総合研究科(水産), 教授 (40183470)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 十脚甲殻類 / 干潟 / 幼生孵化 / 幼生回帰 / 浮遊幼生期間 / 大潮 / （半）月周期 / 海水温 / 幼生 / 半月周リズム |
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| Outline of Final Research Achievements |
Planktonic larvae of the ghost shrimp, Nihonotrypaea harmandi, released from a tidal flat in Amakusa, Kyushu, grow in the water depths with temperatures of 20-24°C in the nearby coastal ocean. They were estimated to feed on phytoplankton by stable isotope analysis. A larval assemblage reared with diatoms at 22°C reached its final developmental stage in two peaks, 29 and 34 d after hatching. The field adult population repeated larval release and embryo re-deposition in a semilunar cycle with its centers on the spring tide periods. The immediate copulation was needed for the embryo re-deposition. A previous larval rearing experiment had recorded the two peak larval developmental durations of 30 and 35 d and 25 and 28 d at 20-24°C and 25°C, respectively. Future seawater temperature rise may disturb a lunar cycle of the larval hatching to return to the adult habitat by moving the final larval stage in the faster growing assemblage forward to dates before the spring tide period.
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Report
(5 results)
Research Products
(10 results)
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[Journal Article] Facultative commensalism of a free-burrowing urothoid amphipod with a deep burrow-dwelling callianassid shrimp in intertidal sand2018
Author(s)
Tamaki, A., Kagesawa, T., Takeuchi, S., Ohashi, H., Yang, S. and Sassa, S.
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Journal Title
Marine Biology
Volume: 165
Issue: 2
Pages: 1-15
DOI
NAID
Related Report
Peer Reviewed
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