The predatory mite Neoseiulus womersleyi (Acari: Phytoseiidae) follows extracts of trails left by the two-spotted spider mite Tetranychus urticae (Acari: Tetranychidae).

• 矢野, 修一

• Yano, Shuichi

• Osakabe, Masahiro

抄録

As it walks, the two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) spins a trail of silk threads, that is followed by the predatory mite, Neoseiulus womersleyi Schicha (Acari: Phytoseiidae). Starved adult female N. womersleyi followed T. urticae trails laid down by five T. urticae females but did not follow a trail of one T. urticae female, suggesting that the amount of spun threads and their chemical components should correlate positively with the number of T. urticae individuals. To examine whether chemical components of T. urticae trails are responsible for the predatory mite's trail following, we collected separate T. urticae threads from the exuviae and eggs, and then washed the threads with methanol to separate chemical components from physical attributes of the threads. Female N. womersleyi did not follow T. urticae trails that had been washed with methanol but contained physical residues, but they did follow the direction to which the methanol extracts of the T. urticae trails was applied. These results suggest that the predatory mite follows chemical, not physical, attributes of T. urticae trails.

収録刊行物

• Experimental & applied acarology

  Experimental & applied acarology 52 (2), 111-118, 2010-10

  Springer Science+Business Media B.V.

キーワード

• Tetranychus urticae
• Neoseiulus womersleyi
• Silk thread
• Methanol extracts
• Trail following

詳細情報

• CRID: 1050282676671401472
• NII論文ID: 120002515181
• NII書誌ID: AA10447740
• ISSN: 01688162
• HANDLE: 2433/129433
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles