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homocercal

/ˌhoʊ.moʊˈsɜːr.kəl/

翻译: 鱼类学(鱼类解剖学)术语,指尾鳍上下两叶对称、脊椎骨末端平直且不延伸入上叶的尾鳍类型,见于大多数现代真骨鱼类。

1 个条目

adjective

/ˌhoʊ.moʊˈsɜːr.kəl/formalscientific
  • zh鱼类学(鱼类解剖学)术语,指尾鳍上下两叶对称、脊椎骨末端平直且不延伸入上叶的尾鳍类型,见于大多数现代真骨鱼类。

A biological term used primarily in ichthyology to describe a type of tail fin (caudal fin) in which the upper and lower lobes are symmetrical, typical of most modern bony fish.

  1. Tail symmetry in fishC2formalscientific

    Having a tail fin that is symmetrical externally, with the vertebral column ending before the tail tip, typical of most bony fishes.

    zh正形尾

    • The carp exhibits a homocercal tail, unlike sharks which have a heterocercal tail.
    • In ichthyology, homocercal tails are a key characteristic of teleost fish.
    • The homocercal structure provides efficient propulsion in many fish species.
    • Observations confirmed that the fossil fish had a homocercal caudal fin.