| Project/Area Number |
20380097
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
KOSAKA Hajime Forestry and Forest Products Research Institute, 九州支所, グループ長 (20343791)
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| Co-Investigator(Kenkyū-buntansha) |
SAYAMA Katsuhiko 独立行政法人森林総合研究所, 北海道支所, 主任研究員 (70353711)
MAKINO Shun'ichi 独立行政法人森林総合研究所, 森林昆虫研究領域, 領域長 (20353849)
KANZAKI Natsumi 独立行政法人森林総合研究所, 森林微生物研究領域, 主任研究員 (70435585)
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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 |
¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2008: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
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| Keywords | 森林生物 / 昆虫寄生線虫 / 生態解明 / 野外調査 / スズメバチ / 不妊化 / 寄生線虫 / 宿主範囲 / 地理的分布 / 感染場所 / 影響評価 / オオスズメバチ / 熊本 / 西表 / キイロスズメバチ / 寄生率 |
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| Research Abstract |
Recently, we found an insect-parasitic nematode from the queen of common hornet, Vespa simillima, from Hokkaido and described it as a new species, Sphaerularia vespae. We also confirmed S. vespae sterilizes the queen hornets. In this study, we examined the host range, geographical distribution and life history of the nematode. Then we clarified that S. vespae parasitizes V.mandarinia and V.dybowskii in addition to V.simillima among seven species of Japanese hornets, (Vespa spp.) ; inhabits three Japanese main islands (Hokkaido, Honshu, and Kyushu) ; and infests gynes (potential queens of next generation) in their hibernation site. In consideration of its hosts including two most dangerous species, V.mandarinia and V.simillima, its wide geographical distribution in Japan and its infection route, we concluded that S. vespae is a promising candidate for the biological control agent of hornets.
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