Translations:Fish/5/ja: Difference between revisions

Latest revision as of 13:06, 28 August 2025

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Message definition (Fish)

Bony fish, distinguished by the presence of [[swim bladder]]s and later [[ossified]] [[endoskeleton]]s, emerged as the [[dominance (ecology)|dominant]] group of fish after the [[end-Devonian extinction]] wiped out the [[apex predator]]s, the placoderms. Bony fish are further divided into [[lobe-finned fish|lobe-finned]] and [[ray-finned fish]]. About 96% of all living fish species today are [[teleost]]s- a [[crown group]] of ray-finned fish that can [[cranial kinesis|protrude their jaws]]. The [[Tetrapoda|tetrapods]], a mostly [[terrestrial animal|terrestrial]] [[clade]] of vertebrates that have dominated the top [[trophic level]]s in both [[aquatic ecosystem|aquatic]] and [[terrestrial ecosystem]]s since the Late [[Paleozoic]], evolved from lobe-finned fish during the [[Carboniferous]], developing air-breathing [[lung]]s [[homology (biology)|homologous]] to swim bladders. Despite the [[cladistic]] lineage, tetrapods are usually not considered fish.

浮き袋と、後には骨化した内骨格をもつことによって区別される硬骨魚類は、デボン紀末の大量絶滅で板皮類という頂点捕食者が消滅した後、優勢な魚類群となった。硬骨魚類はさらに肉鰭類と条鰭類に分けられる。現生魚類の約96%は真骨類であり、これは冠群に属する条鰭類で、顎を前方に突き出すことができる。四肢動物は、主として陸生のクレードであり、後期古生代以降、水界および陸界双方の食物連鎖上位を支配してきたが、これらは石炭紀に肉鰭類から進化し、肺を獲得した。肺は浮き袋と相同である。系統分類学的には四肢動物は魚類に含まれるが、通常は魚類とは見なされない。

Translations:Fish/5/ja: Difference between revisions

Latest revision as of 13:06, 28 August 2025

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