重量の家畜の放牧は,植物の窒素含有量を低下させることにより,の発生を促進します
Arianne J Cease1, James J Elser, Colleen F Ford
1School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA. arianne.cease@asu.edu
まとめ
予想とは対照的に,植物窒素 (N) の値が高くなり,ハエに悪影響を及ぼした. 重量の家畜の放牧は,植物タンパク質を減少させることで,草原でのの発生を促進する可能性があります.
科学分野:
- エコロジー エコロジー エコロジー
- エントモロジー エントモロジー学
- 動物の行動 動物の行動
背景:
- 植物性窒素 (N) は,タンパク質の制限を緩和することによって,草食動物のパフォーマンスを向上させると一般的に考えられています.
- これは,草食昆虫の個体数の増加につながる可能性があります.
研究 の 目的:
- 宿主植物の窒素濃縮がオデラウス・アシアティカスのサイズと生存能力に与える影響を調査する.
- 植物窒素と人工餌の組成に関して,の餌の好みを決定する.
主な方法:
- 宿主植物における窒素含有量の実験操作.
- タンパク質と炭水化物の濃度が異なる人工的食事の提供.
- 野外観測により,トカゲの繁殖と家畜の放牧の強度,土壌の窒素の枯渇が相関している.
主要な成果:
- 宿主植物の窒素濃縮と高タンパク質の人工ダイエットにより,のサイズと生存能力が低下しました.
- Oedaleus asiaticusは,窒素が少ない植物や,タンパク質が少なく,炭水化物が多い人工的食事を好みました.
- ハエの多さは,土壌窒素が枯渇した肥沃な牧草地で最も多かった.
結論:
- 植物窒素の増加は,必ずしもすべての草食動物に有益であるとは限らないが,Oedaleus asiaticus.のようないくつかの種に悪影響を与える可能性がある.
- 重量の家畜の放牧と草原の劣化は,植物タンパク質を減少させることで,北アジアの草原での発生を促進する可能性があります.
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