| Project/Area Number |
20380033
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Applied entomology
|
|---|
| Research Institution | Shinshu University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MIZOGUCHI Akira 名古屋大学, 理学研究科, 准教授 (60183109)
AZUMA Masaaki 鳥取大学, 大学院・連合農学研究科, 教授 (20175871)
TOMINAGA Makoto 大学共同利用機関法人自然科学研究機(共通施設), 岡崎統合バイオサイエンスセンター, 教授 (90260041)
OHTA Hiroto 熊本大学, 自然科学研究科, 助教 (60450334)
|
|---|
| Research Collaborator |
KATOYO Shiomi 国際基督教大学, 名誉教授
|
|---|
| Project Period (FY) |
2008 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2008: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
|
|---|
| Keywords | 昆虫生理学 / 昆虫神経内分泌学 / 休眠ホルモン / ヒメシロモンドクガ / カイコ / 季節的多型 / 休眠 / トレードオフ / 発生可塑性 / FXPRLアミド神経ペプチド |
|---|
| Research Abstract |
To analyze the molecular mechanisms involved in reproductive polyphenism, including the diapause induction of Orgyia the llina, we first cloned and characterized the diapause hormone-pheromone biosynthesis activating neuropeptide(DH-PBAN) cDNA encoding the five Phe-X-Pro-Arg-Leu-NH_2(FXPRLa) neuropeptides. We revealed that not only does the Orgyia DH induce embryonic diapause, but also that this neuropeptide induces seasonal polyphenism, participating in the hypertrophy of follicles and ovaries. This is the first study showing that a neuropeptide has a pleiotropic effect in seasonal reproductive polyphenism to accomplish seasonal adaptation. We also show that a novel factor(i. e., the DH neuropeptide) acts as an important inducer of seasonal polyphenism underlying a life-history tradeoff.
|
