...Around the vertebrae, a blood vessel-rich blood muscle develops, stimulating metabolism. Heat generated by metabolism is stored in the body without being released into the surrounding water by a rete mirage (a network of tiny arteries and veins) that runs parallel to the blood muscle. This means that unlike ordinary fish, they can maintain a body temperature much higher than the surrounding water, which allows various metabolisms to be carried out quickly and allows them to live an active life, with the fastest swimming speed of any fish (said to be 100km/h). *Some of the terminology explanations that mention "kiami" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…脊椎骨の周辺には血管に富んだ血合肉(ちあいにく)が発達し,物質代謝を活発にする。物質代謝で生成された熱は,血合部に平行に分布する細かな多数の動脈と静脈からなる奇網(きもう)(怪網)によって環境水中に放出されることなく体内に保存される。このためふつうの魚と異なって環境水よりかなり高い体温を保持することになり,もろもろの物質代謝が早く行われ,魚類中でも最高の遊泳力(最高は100km/hといわれる)を有する魚として活発な生命活動を営むことが可能となる。… ※「奇網」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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