不正確なミミックの進化は,不正確なミミックの進化です
1Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. raj1003@hermes.cam.ac.uk
Nature
|August 2, 2002
まとめ
親族の選択は,人間には不正確に見えても,不完全な模倣を好む可能性があります. これは,捕食者がモデルと模倣周波数に基づく差別を適応させ,模倣が悪い種に対する攻撃を潜在的に増加させるときに起こります.
科学分野:
- 進化生物学の進化生物学について
- 行動生態学 行動生態学
- 人口遺伝学 人口遺伝学
背景:
- 味覚の良い獲物が嫌悪的なモデルを模倣するバテシアン模倣は,自然選択の古典的な例です.
- 不完全な模倣は,類似性が乏しい場合,理解が少ない.
- 不完全模倣の既存の説明には,捕食者の知覚と複数のモデルとの類似性が含まれます.
研究 の 目的:
- 不完全なバテシアン模倣の進化の原動力を調査する.
- 模倣精度の進化における親族選択の役割を調査する.
主な方法:
- 信号検出理論に基づく理論的モデリング.
- 捕食者と獲物の相互作用と周波数依存の選択の分析.
- 親族選択原理を模倣モデルに組み込むこと.
主要な成果:
- 捕食者は,モデルと模倣者の相対的な周波数と類似性に基づいて差別を調整します.
- 希少または弱く嫌悪的なモデルは,不完全な模倣者に対する攻撃率の増加につながる可能性があります.
- 親族の選択は,地元のミミックの集団が関連しているときに,正確なミミックの進化に反対することができます.
結論:
- 不完全な模倣は,人間の観察者にとって不正確に見える場合でも,親族選択によって好まれるかもしれません.
- 模倣精度の進化は,捕食者の行動と模倣者の関係性によって影響されています.
- これは,不完全なバテシアン模倣に対する新しい適応的説明を提供します.
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