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昆虫の翼の進化的起源は,祖先のから来ている
1European Molecular Biology Laboratory, Heidelberg, Germany. averof@embl-heidelberg.de
Nature
|February 13, 1997
まとめ
昆虫の翼は,古代のを持つ付属物から進化した可能性が高く,新しい体の成長ではない. 甲殻類における遺伝子発現は,水生生物の祖先から発生した昆虫の翼の進化的起源を支持する.
科学分野:
- 進化的発達生物学 進化的発達生物学
- 比較ゲノミクスとは
- 節足類 進化 進化について
背景:
- 昆虫の翼の進化的起源は議論の余地があり,主に2つの仮説がある:事前に存在していた四肢の枝 (おそらく) の改変,または体壁からの新たな成長.
- 翼の発達の遺伝的基盤を理解することで,その進化の歴史に光を当てることができます.
研究 の 目的:
- 昆虫の翼の進化的起源を調査するために,甲殻類の同類遺伝子を検査する.
- 翼が多枝分断の付属体の背面構造から進化したという仮説を検証するために.
主な方法:
- 昆虫の翼に特異的な2つの遺伝子であるpdm (nubbin) とapterous.comの甲殻類同類の分離と特徴付け
- 甲殻類の肢体構造における遺伝子発現パターンの分析.
主要な成果:
- pdm (nubbin) とapterousの甲殻類同種が成功裏に特定されました.
- 甲殻類におけるこれらの遺伝子の発現パターンは,昆虫の翼の発達と共通の遺伝的基礎を支える証拠を提供します.
結論:
- この発見は,昆虫の翼が水生生物の祖先に存在する状の付属体から進化したという仮説を裏付けている.
- これは,翼の発達のための遺伝的ツールキットが,甲殻類と昆虫の共通の祖先に既に存在していたことを示唆しています.
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