生物学におけるアロメトリックスケーリング法則の起源に関する一般的なモデル
G B West1, J H Brown, B J Enquist
1Theoretical Division, T-8, Mail Stop B285, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Science (New York, N.Y.)
|April 4, 1997
まとめ
代謝率の3/4の功率法則のようなアロメトリックスケーリング法則は,フラクタル輸送ネットワークの一般的なモデルによって説明されます. このモデルは,多様な種間の生物学的システムの特性を正確に予測します.
科学分野:
- 生物学 生物学 生物学とは
- 物理 物理学 物理学とは
- ネットワーク科学 ネットワーク科学
背景:
- 代謝率の3/4の力法則のようなアロメトリックスケーリング関係は,様々な生物で観察されています.
- これらのスケーリング法則は,生理学的性質が体サイズによってどのように変化するかを説明します.
- 既存のモデルには,これらの広範な観測を説明するための統一された理論的枠組みがしばしば欠けている.
研究 の 目的:
- 基本的原理に基づくアロメトリックスケーリング関係の一般的なモデルを導き出す.
- 代謝率やその他のスケーリング現象の 3/4 乗法を説明するために.
- モデルの適用性を様々な生物輸送システムに実証する.
主な方法:
- 空間を満たすフラクタルネットワークを通じて物質輸送のための一般的なモデルを開発した.
- エネルギー消耗を最小限に抑えるための組み込み原理と,サイズに関係ない端末チューブ.
- 哺乳類の循環系内のスケーリング関係を分析した.
主要な成果:
- このモデルは,代謝率の3/4の力法則を含む,アロメトリックのスケーリング関係を成功裏に導出しています.
- 哺乳類の循環器系のスケーリング関係は,経験的データと一致しています.
- このモデルは,多様な生物学的分布ネットワークの構造的および機能的特性を予測します.
結論:
- フラクタルネットワーク理論に基づく統一モデルは,基本的なアロメトリックスケーリング法則を説明できる.
- このモデルは,生物学的輸送システムの設計原理を理解するための理論的基礎を提供します.
- この枠組みは,脊椎動物,植物,昆虫の生物システムに広く適用できます.
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