チャノキイロアザミウマの越冬場所と越冬態

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概要

• 論文の詳細を見る

• Overwintering sites and stages of Scirtothrips dorsalis HOOD were observed at tea fields in Kanaya, Shizuoka Prefecture, Central Japan from November, 1979 to April, 1980. Since the adults were collected from sites located in the leaf zone, branch zone, litter and soil throughout winter, it is assumed that the thrips hibernate in the adult stage. The adults showed minimum level of activity for three months form mid-December to mid-March, but some were active in the tea crown throughout the winter. The larvae which moved from leaves to tree trunks or litter pupated there, and most of them became adults from November to December, at least before February. However, the larvae, prepupae and pupae were also able to hibernate if young leaves were available in mild winter. In the present pbsrevation litter was selected as the most suitable site for hibernation (64.4%), followed by the branch zone (16.2%), soil (12.5%) and leaf zone (6.9%), but preference of the thrips for the overwintering sites may vary with the conditions of the tea fields. The female/male ratio of the adult insects during January to February was about 3.4 in tea bushes, and about 2.5 in litter and soil. The adults which had overwintered emerged from litter and moved to the leaf zone in late March after a few days of high temperature. After feeding on and laying eggs in new leaves, most of the adults died before the end of April and some before middle May. The life span of the overwintering adults appears to be about five months.

• 日本応用動物昆虫学会の論文
• 1982-08-25

著者

• 工藤 巌

  静岡聖光学院中学校

• 岡田 利承

  茶業試験場:(現)農林水産技術会議事務局

関連論文

• 日本産Danothrips属(総翅目,アザミウマ科)と同属の1新種の記載
• チャノキイロアザミウマの越冬場所と越冬態
• チャ園で採集されたアザミウマ類とその季節消長
• チャノキイロアザミウマ幼虫の蛹化場所探索に伴う行動
• ダイズシストセンチュウ卵の前処理と根浸出液のふ化促進効果の関係
• ダイズ加害におけるダイズシストセンチュウと根粒菌の関係

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