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Updated: Jun 26, 2026

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Herbivore-induced Blueberry Volatiles and Intra-plant Signaling
Published on: December 18, 2011
植物の侵入に対して,原産の草食動物と異国の草食動物が持つ相反する影響
John D Parker1, Deron E Burkepile, Mark E Hay
1School of Biology, Georgia Institute of Technology, Atlanta, GA 30332, USA. jdp52@cornell.edu
まとめ
ネイティブの草食動物は,エキゾチックな植物に抵抗するが,エキゾチックな草食動物は,それらの植物の繁栄を助ける. ネイティブをエキゾチックな草食動物に置き換えることは,植物の侵入と生態学的破壊を加速します.
科学分野:
- エコロジー エコロジー エコロジー
- 侵入種 生物学 侵入種 生物学
- コミュニティエコロジー コミュニティエコロジー
背景:
- エキゾチックな種は,新しい環境で天然の敵が不足しているため,しばしば成功すると考えられています.
- 植物の侵入における草食動物の役割を理解することは,生態系の変化を予測するために極めて重要です.
研究 の 目的:
- エキゾチックな植物の侵入に,ネイティブおよびエキゾチックな草食動物の影響を調査する.
- 本土の草食動物が侵入植物に対する生物的耐性を提供するかどうかを判断する.
- 植食動物コミュニティのシフトが侵略ダイナミクスに及ぼす影響を評価する.
主な方法:
- 63の操作的なフィールド研究に関するメタ解析が行われました.
- 研究は,総計100種以上の異国植物種を集約して調査した.
- 研究は,異国植物の実績に対する,先住民と異国の草食動物の影響を比較した.
主要な成果:
- 地元の草食動物は,異国植物の豊富さと拡散を大幅に抑制しました.
- 逆に,エキゾチックな草食動物は,エキゾチックな植物の豊富さと種の豊かさの両方を促進しました.
- 植物は,彼らが防御を進化させていない新しい,汎用的な草食動物に対して特に脆弱であるようです.
結論:
- ネイティブの草食動物は,侵入植物に対するバイオティック抵抗性の主要な提供者である.
- 国産の草食動物を,外来のものに置き換えることで,この抵抗性が低下する.
- 草食動物コミュニティのこの変化は,植物の侵入を促進し",侵入的なメルトダウン"につながる可能性があります.
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