Fish/ja: Difference between revisions

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[[Vision in fish|~~Vision~~]] ~~is an important~~ [[sensory system]] ~~in fish. Fish eyes are similar to those of~~ [[terrestrial animal|~~terrestrial~~]] [[vertebrate]]~~s like~~ [[bird vision|~~birds~~]] ~~and mammals, but have a more~~ [[spherical]] [[lens (anatomy)|~~lens~~]]~~. Their~~ [[retina]]~~s generally have both~~ [[rod cell|~~rods~~]] ~~and~~ [[cone cell|~~cones~~]] ~~(for~~ [[scotopic vision|~~scotopic~~]] ~~and~~ [[photopic vision]]~~); many species have~~ [[colour vision]]~~, often with three types of cone. Teleosts can see~~ [[polarized light]]~~; some such as cyprinids have a fourth type of cone that detects~~ [[ultraviolet]]~~. Amongst~~ [[jawless fish]]~~, the~~ [[lamprey]] ~~has well-developed eyes,while the~~ [[hagfish]] ~~has only primitive eye spots.~~

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 [[lateral line/ja|側線]]系は皮膚にある感覚器のネットワークで、弱い水流や振動を検出し、捕食者であれ獲物であれ近くの魚の動きを感知する。これは[[touch/ja|触覚]]と[[hearing/ja|聴覚]]の両方に相当すると考えられる。[[Blind cave fish/ja|メクラウオ]]は、ほぼ完全に側線系からの感覚によって遊泳する。ナマズやサメのような一部の魚は、[[ampullae of Lorenzini/ja|ロレンチーニ器官]]と呼ばれる[[electroreceptor/ja|電気受容器]]をもち、ミリボルト程度の弱い電流を検出する。
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+[[Vision in fish/ja|視覚]]は魚において重要な[[sensory system/ja|感覚系]]である。魚の目は[[terrestrial animal/ja|陸生]]の[[vertebrate/ja|脊椎動物]]（[[bird vision/ja|鳥類]]や哺乳類）の目と似ているが、より[[spherical/ja|球状]]の[[lens (anatomy)/ja|水晶体]]をもつ。彼らの[[retina/ja|網膜]]には一般に[[rod cell/ja|桿体]]と[[cone cell/ja|錐体]]があり（[[scotopic vision/ja|薄明視]]と[[photopic vision/ja|明所視]]のため）、多くの種は[[colour vision/ja|色覚]]をもち、しばしば3種類の錐体を有する。硬骨魚類は[[:en:polarized light|偏光]]を見ることができ、コイ科のような一部は[[:en:ultraviolet|紫外線]]を検出する第4の錐体をもつ。[[jawless fish/ja|無顎類]]の中では、[[lamprey/ja|ヤツメウナギ]]はよく発達した目をもつが、[[hagfish/ja|ヌタウナギ]]は原始的な眼点しかもたない。
-[[Vision in fish|Vision]] is an important [[sensory system]] in fish. Fish eyes are similar to those of [[terrestrial animal|terrestrial]] [[vertebrate]]s like [[bird vision|birds]] and mammals, but have a more [[spherical]] [[lens (anatomy)|lens]]. Their [[retina]]s generally have both [[rod cell|rods]] and [[cone cell|cones]] (for [[scotopic vision|scotopic]] and [[photopic vision]]); many species have [[colour vision]], often with three types of cone. Teleosts can see [[polarized light]]; some such as cyprinids have a fourth type of cone that detects [[ultraviolet]]. Amongst [[jawless fish]], the [[lamprey]] has well-developed eyes,while the [[hagfish]] has only primitive eye spots.
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