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Using the Horseshoe Crab, Limulus Polyphemus, in Vision Research
Published on: July 3, 2009
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深海の熱水噴出孔カニの適応的視覚変形
Robert N Jinks1, Tara L Markley, Elizabeth E Taylor
1Department of Biology, Franklin and Marshall College, Lancaster, Pennsylvania 17604-3003, USA. rjinks@fandm.edu
Nature
|November 8, 2002
まとめ
プランクトン系 Vent Crab larvae (Bythograea thermydron) は,イメージを形成する視覚のための目を持っています. 成長するにつれて,彼らの目は感度が高くなり,より長い波長を検知し,深海の熱水噴出口で定住するのを助けます.
科学分野:
- マリン・バイオロジー マリン・バイオロジー
- 深海の生態学 深海の生態学
- 感覚生物学 感覚生物学について
背景:
- 熱水噴出孔は,固有の野生動物を持つユニークな生態系をホストしています.
- 噴気ファウナの幼虫段階である,噴気カニのBythograea thermydronのようなものは,広く散らばっている.
- エントファウナの生命史における視覚の役割は,未だにほとんど未調査のままである.
研究 の 目的:
- 窓ガラスの生命史における視覚系の役割を調査する. 窓ガラスの生命史における視覚系の役割を調査する. Bythograea thermydron.
- 視力の適応を理解するために, Vent Crabsの幼虫期と後幼虫期に視力が適応する.
- 生命の異なる段階における視覚色素のスペクトル感度を決定する.
主な方法:
- 幼虫,幼虫後,成人期における眼の形態と光学の比較分析.
- 視覚色素のスペクトロフォトメトリック分析により,スペクトル吸収率を測定する.
- 幼虫の分散と定着行動の観察.
主要な成果:
- Zoeaの幼虫は,青い光に敏感な,画像を形成する複合眼を持っています.
- メタモルフォシスは,画像形成光学の喪失と高感度裸網膜眼の発達につながる.
- 吸光スペクトルは青からより長い波長にシフトし,風口環境に適応します.
結論:
- 窓ガチョウの視力は大きな変異を経験し,画像を感度で交換します.
- この視覚的適応は,深海の熱水噴出口での航行と定着に役立ちます.
- 視力は他の感覚を補完し,風口の位置の位置づけと定着を可能にします.
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