| Project/Area Number |
25650134
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Biodiversity/Systematics
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KUMANO Norikuni 琉球大学, 農学部, 協力研究員 (90621053)
SASAKI Takeshi 琉球大学, 風樹館, 教務職員 (40264478)
TAKANASHI Takuma 独立行政法人森林総合研究所, 森林昆虫研究領域, 主任研究員 (60399376)
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| Co-Investigator(Renkei-kenkyūsha) |
KISHINO Hirohisa 東京大学, 大学院農学生命科学研究科, 教授 (00141987)
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| Research Collaborator |
WATANABE Kakeru
YOKOKURA Ryo
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 音響コミュニケーション / 多変量解析 / 防除 / 生態系保全 / 性選択 / ニイニイゼミ / イモゾウムシ / 周波数 / 音声 / ウエーブレット / 変異 / 時間 / 判別 |
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| Outline of Final Research Achievements |
For the comparisons of calling songs in Platypleura species, seven characteristics including phrase length and six variables characterizing the power spectra were extracted from three segments of a phrase, and then tested whether these characteristics could be used to discriminate between species and localities. Discriminant analysis based on all measured variables resulted in perfect prediction of P. albivannata versus P. yayeyamana, even after a cross validation method was implemented, although no differences could be distinguished in some variables of the ending segment of a phrase. For the examination of weevils, it was determined that the characteristics of distress sounds were differentiated among different reared lineages. In particular, although the slope of the regression between body size and the mean duration of the echeme varied significantly among lineages in males, the regression slopes were almost isotropic throughout localities in females.
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