Estimation of annual population fluctuation of Cryptotympana facialis (Walker) (Hemiptera: Cicadidae) in Osaka City for 36 years

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  • 大阪市における36年間のクマゼミ発生量変動の推定
  • オオサカシ ニ オケル 36ネンカン ノ クマゼミ ハッセイリョウ ヘンドウ ノ スイテイ

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Based on the first observation date of calling sounds and the daily mean temperature recorded by the meteorological observatory, adult population fluctuation of a cicada species,Cryptotympana facialis (Walker), for 36 years (1976-2011) was estimated in Osaka City. The population of this cicada species increased in the early 1980s, and has retained its high level since then. The periodicity could not clearly be detected in the population fluctuation pattern.

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