考古学:初期の白亜紀のクモの巣の糸
1Department of Integrative Biology, Section of Conservation Biology, University of Basel, 4056 Basel, Switzerland. samuel.zschokke@alumni.ethz.ch
Nature
|August 9, 2003
まとめ
1億3千万年前のレバノンの珀で発見された粘着剤の滴がある古代のクモの糸は,粘着性の糸の初期の進化を明らかにしています. この発見は,以前に知られている例より9000万年前に遡り,この重要なクモのイノベーションの長い歴史を強調しています.
科学分野:
- パレオントロジー・パレオントロジー
- アラクロノジー アラクロノジー
- 進化生物学の進化生物学について
背景:
- 繊細な糸は,アレーノイドクモにとって重要な適応であり,獲物を捕獲し,生態学的優位性に寄与します.
- 粘着性の糸の進化はクモの歴史における重要な出来事ですが,化石の証拠はほとんどありません.
研究 の 目的:
- 初期の白亜紀レバノンアンバーで,著しく保存された粘着性のあるクモ糸糸の発見を報告するために.
- 粘着性のシルクとクモのスーパーファミリーAraneoideaの古代を確立するために.
主な方法:
- レバノンの珀で保存された単一のシルク糸の標本の説明と分析.
- 放射線年代測定と,以前に発見された珀の化石との比較分析.
主要な成果:
- 約1億3000万年前 (白紀初期) にさかのぼる粘着性のあるクモ糸の糸がレバノンの珀で確認されました.
- この発見は,以前報告された標本よりもかなり古い,粘着性のシルクの最も古い既知の証拠を表しています.
結論:
- この発見は,粘着性のシルクの既知の起源を約9000万年前に後退させる.
- これは,アラネオイド蜘蛛の進化における粘着性のシルクの初期の存在と重要性を示す強力な証拠を提供します.
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