節足類が物体間の距離をしっかりと判断する
1Centre for Visual Sciences, Research School of Biological Sciences, Australian National University, PO Box 475, Canberra, Australian Capital Territory 2601, Australia. jan.hemmi@anu.edu.au
Nature
|January 10, 2003
まとめ
バイオリンクラバは,自分の場所だけでなく,穴の近さも判断できます. 彼らは,高度な深さの知覚のためのパスの統合と視覚的なヒントを組み合わせ,アロセントリックな参照フレームを使用します.
科学分野:
- 動物の行動 動物の行動
- センサリーエコロジー センサリーエコロジー
- 神経倫理学 神経倫理学とは
背景:
- 動物は,物理的および環境的制約の影響を受け,さまざまな深度視力戦略を採用しています.
- 関節足類は,フィドルクレーブのように,小さなサイズと低解像度の複合眼のため,深さの知覚が限られています.
研究 の 目的:
- 視力の限界にもかかわらず,フィドルラー・カニが,同種の動物が自分の穴の近くにいることをどのように評価するのかを調査する.
- 距離判断のためにフィドルクランブが使用する基準フレーム (エゴセントリック対アロセントリック) を決定する.
主な方法:
- バイオリンキャブには,穴に近づく小さな人形キャブが提示されました.
- カニの防御反応は,穴に対する人形の位置と動きに基づいて記録された.
主要な成果:
- フイドルクランバは,自分の位置ではなく,穴 (アロセントリック・フレーム) に関する距離を評価します.
- 反応の確率は,カニの距離に関係なく,人形が穴に近づくにつれて増加しました.
- 応答距離は恒定であり,ドミーの接近方向から独立していた.
結論:
- バイオリンクラバは,洞窟防衛のために洗練されたアロセントリック深さの知覚を示しています.
- 彼らは,正確な相対距離判断のために,パスの統合と視覚情報を統合する可能性が高い.
- これは,環境幾何学の複雑な利用が,人間に似た方法で,航行と防衛のために利用されていることを示しています.
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