Neuroendocrine basis of lunar-synchronized spawning migration in grass puffer
| Project/Area Number |
20570058
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Morphology/Structure
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| Research Institution | Kyushu University |
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Principal Investigator |
ANDO Hironori Kyushu University, 大学院・農学研究院, 准教授 (60221743)
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| Co-Investigator(Kenkyū-buntansha) |
HATTORI Atsuhiko 東京医科歯科大学, 教養部, 教授 (70183910)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 産卵回遊 / 生殖リズム / 松果体 / メラトニン / GnRH / キスペプチン / GnIH / 神経ペプチド / メラトニン受容体 / クサフグ / 生物リズム / 産卵リズム / 時計遺伝子 |
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| Research Abstract |
To establish molecular basis of neuroendocrine control of lunar-synchronized spawning migration in grass puffer, we assessed changes in magnitudes of gene expression for various neurohormones and their receptors in the hypothalamus and pineal gland. In the hypothalamus, the expressions of those genes significantly increased during the spawning period and showed diurnal and circadian variations in association with changes in expression of melatonin receptor gene. In the pineal gland, melatonin receptor gene showed unique rhythmic expressions with 14 hours cyclicity and monthly variations. Observations of spawning behavior in spawning grounds and in aquarium revealed that the spawning rhythm is endogenously maintained possibly under the control of the circalunar clock in the pineal gland.
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Report
(4 results)
Research Products
(151 results)
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[Journal Article] Synchronised expressions of LPXRFamide peptide and its receptor genes : seasonal, diurnal and circadian changes during spawning period in grass puffer.2010
Author(s)
Shahjahan, Md., Ikegami, T., Osugi, T., Ukena,K., Doi,H., Hattori, A., Tsutsui, K., Ando, H.
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Journal Title
J. Neuroendocrinol. 23
Pages: 39-51
Related Report
Peer Reviewed
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[Journal Article] Differential expression of three types of gonadotropin-releasing hormone genes during the spawning season in grass puffer, Takifugu niphobles.2010
Author(s)
Shahjahan, Md., Hamabata, T., Motohashi, E., Doi, H., Ando, H.
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Journal Title
Gen. Comp. Endocrinol. 167
Pages: 153-163
Related Report
Peer Reviewed
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[Journal Article] Melatonin stimulates the release of gonadotropin-inhibitory hormone by the avian hypothalamus.2010
Author(s)
Chowdhury, V.S., Yamamoto, K., Ubuka, T., Bentley, G.E., Hattori, A., Tsutsui, K.
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Journal Title
Endocrinology 151
Pages: 271-280
Related Report
Peer Reviewed
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[Journal Article] Diurnal expressions of four subtypes of melatonin receptor genes in the optic tectum and retina of goldfish.2009
Author(s)
Ikegami, T., Azuma, K., Nakamura M., Suzuki, N., Hattori, A., Ando, H.
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Journal Title
Comp. Biochem. Physiol. Part A 152
Pages: 219-224
Related Report
Peer Reviewed
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