鹿児島県のマンゴー加温栽培におけるチャノキイロアザミウマの系統別発生消長

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  • Seasonal prevalence of two strains of <i>Scirtothrips dorsalis</i> Hood in mango greenhouse in Kagoshima Prefecture.
  • カゴシマケン ノ マンゴーカオン サイバイ ニ オケル チャノ キイロ アザミウマ ノ ケイトウ ベツ ハッセイ ショウチョウ

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<p>Scirtothrips dorsalis Hood is known as one of the most important pest of mango plants cultivated in greenhouse in Kagoshima Prefecture. S. dorsalis has two strains, C and YT. Strain C have also found in Kagoshima prefecture mango cultivated in 2009. But, there is little information about their seasonal prevalence of strains C and YT on mango cultivated. In this study, the seasonal prevalence of both strains adult caught by yellow sticky traps in mango cultivated was investigated from August 2011 to December 2015. Strains were analyzed by a multiplex-PCR method. Both strains were started to increase after February, and had two peaks from March to April and from August to October. These were synchronously with stage of flowering and new branch growing. However, Strain C was continuously found in autumn and winter, while strain YT had not been found at the end of October at the latest. In addition, the number of strain C has tendency to increase due to the decreased control effect of neonicotinoids.</p>

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