マンティス・シュリンプの異なる形態の色覚
Hanne H Thoen1, Martin J How, Tsyr-Huei Chiou
1Queensland Brain Institute, University of Queensland, Brisbane, Queensland 4072, Australia.
Science (New York, N.Y.)
|January 25, 2014
まとめ
マンティス・シュリンプは12個の光受容体を持つ複雑な目を持っていますが,色の区別は薄いです. 彼らのユニークな視覚システムは,通常の色覚ではなく,色認識のために時間の信号と目の動きを使用している可能性があります.
科学分野:
- * 比較視力研究について
- * 動物の行動と感覚生物学
背景:
- * 口足類の甲殻類は,非常に複雑な視覚システムを備えています.
- *これらの動物は,深紫外線から極赤色光 (300720 nm) までの幅広いスペクトルをカバーする,最大12の異なる光受容体タイプを持っています.
- *この染色体の複雑性の機能的意義は,ヒトの光受容体多様性を超えるため,科学的な謎のままである.
研究 の 目的:
- * マンティス・シュリンプの複雑な色の視覚の機能的基礎を調査する.
- * 視覚系が微妙な色差を識別するために従来の色対比符号化を使用しているかどうかを判断する.
主な方法:
- * ストマトポッドの波長差別の能力を評価するために,行動実験が行われました.
- * 視覚処理機構の分析,眼の動きと時間信号を含む.
主要な成果:
- * ストマトポッドは,行動波長差別のテストで驚くほど低いパフォーマンスを示しました.
- *結果は,色の差別のための従来の色対比符号化システムの関与を排除した.
- * 証拠によると,新しい色彩視覚システムが採用されていることが示されています.
結論:
- * マンティス・シュリンプは,一時的なシグナル伝達と眼の動きをスキャンすることで,独特の色彩認識システムを活用している可能性が高い.
- *このシステムは,細かい色の差別ではなく,ある種の色の認識を可能にします.
- *この研究は,動物界における色彩認識のこれまで未知のメカニズムを明らかにした.
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