ミカンハダニの生活史パラメーターに対する温度の影響

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タイトル別名
  • Influence of Temperature on Some of the Life Cycle Parameters of the Citrus Red Mite, <i>Panonychus citri</i> (MCGREGOR) (Acarina: Tetranychidae)
  • ミカンハダニ ノ セイカツシ パラメーター ニ タイスル オンド ノ エイキョ

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説明

Some of the life cycle parameters of the citrus red mite, Panonychus citri (MCGREGOR), were estimated by rearing experiments at constant temperatures of 12, 16, 20, 24, 28 and 32°C. The durations of egg stage and pre-adult stage, and the mean generation time (T) were 5.3, 9.1 and 11.7, respectively, at 32°C. At 12°C, these values increased by about 6-7 times those at 32°C. Developmental zeros of the egg and pre-adult stages were 7.4 and 8.2°C, and total effective heat was 123 and 217 day-degrees, respectively. All of these parameters such as total fecundity, net reproductive rate (R0) and intrinsic rate of natural increase (rm) were maximum at 24°C, and the values (in case of sex ratio 7_??_:3_??_) were 42.6, 28.3 and 0.171/day, respectively.

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