2012 Fiscal Year Final Research Report
Population dynamics of Japanese male planthoppers canceling the male-killing phenomenon by symbiotic bacteria in the small brown planthopper, Laodelphax striatellus.
| Project/Area Number |
22780048
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied entomology
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| Research Institution | National Agriculture and Food Research Organization |
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Principal Investigator |
SANADA Sachiyo 独立行政法人農業・食品産業技術総合研究機構, 九州沖縄農業研究センター・生産環境研究領域, 主任研究員 (80533140)
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| Research Collaborator |
NODA Hiroaki 独立行政法人農業生物資源研究所, 昆虫科学研究領域, 特任上級研究員 (40343991)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 細胞内共生細菌 / 性比偏向 / ヒメトビウンカ / スピロプラズマ / ウォルバキ ア |
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| Research Abstract |
Spiroplasma infected in the small brown planthopper causes male-killing and female-biased sex ratio of progenies produced by infected females in Taiwan populations. We performed cross experiments between females of female biased lines and males in various populations from eastern and southern parts of Japan. All of the pairs crossed with males in Kyushu populations produced only female adult progenies. However, some pairs crossed with males in western and eastern Japanese populations produced male progenies at the normal sex ratio. This result suggests that male-killing phenomenon in Spiroplasma is canceled by some of males in the western and eastern Japanese populations.
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