ツリーホッパーにおけるボディプランの革新は,翼のような余分な付属体の進化によってもたらされた
Benjamin Prud'homme1, Caroline Minervino, Mélanie Hocine
1Institut de Biologie du Développement de Marseille-Luminy, CNRS UMR 6216, case 907, Parc scientifique de Luminy, 13288 Marseille cedex 9, France. benjamin.prudhomme@univmed.fr
Nature
|May 6, 2011
まとめ
ツリーホッパー (ツリーホッパー) とは
科学分野:
- 進化的発達生物学 進化的発達生物学
- 動物の形態学 動物の形態学
- 昆虫の進化について
背景:
- 動物のボディプランは,付属体の減少または喪失を通して進化します.
- 新しい機能の追加は稀であり,理解が不十分である.
- 昆虫の進化は,付属体の進化に制約があることを示している.
研究 の 目的:
- ツリーホッパーのユニークな"ヘルメット"の進化的起源を調査します.
- ヘルメットが新しい付属体を表しているかどうかを判断します.
- この進化的革新を可能にする遺伝的および機能的要因を理解する.
主な方法:
- 比較形状学 比較形状学について
- フィロジェネティック分析
- ホックス遺伝子家族調査 ホックス遺伝子家族調査
- 機能的制約分析とは
主要な成果:
- ツリーホッパーヘルメットは,新しい付属物であり,翼のシリアルホモローグです.
- それは,翼形成の祖先のホックス遺伝子抑制を克服することによって進化した.
- ヘルメットの多様化は,飛行に関連する機能的な制約がないことによって促進されました.
結論:
- 複雑な形態学的構造は,先祖の発達の可能性から生じる可能性があります.
- ホックス遺伝子の調節と機能的な放出は,付属のイノベーションの鍵です.
- この研究は,昆虫における新しい付属体の進化の前例のない例を示しています.
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