英语词汇“heterocercal”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

heterocercal

/ˌhɛtərəʊˈsəːkəl

adjective Zoology

(Of a fish’s tail) having unequal upper and lower lobes, usually with the vertebral column passing into the upper. Contrasted with diphycercal, homocercal.The tail is heterocercal, with the upper lobe containing long, thread-like filaments....

The body shows well-developed paired lateral fins (presumably true pectoral fins), indicating good stability, dorsal and anal fins, and a heterocercal tail (the lower lobe of the tail is elongated).
The sturgeon heterocercal tail is extremely flexible and the upper tail lobe trails the lower during the fin beat cycle.

Origin

Mid 19th century: from hetero- 'other' + Greek kerkos 'tail'.

单词	heterocercal
释义	heterocercal /ˌhɛtərəʊˈsəːkəl / adjective Zoology (Of a fish’s tail) having unequal upper and lower lobes, usually with the vertebral column passing into the upper. Contrasted with diphycercal, homocercal.The tail is heterocercal, with the upper lobe containing long, thread-like filaments.... The body shows well-developed paired lateral fins (presumably true pectoral fins), indicating good stability, dorsal and anal fins, and a heterocercal tail (the lower lobe of the tail is elongated). The sturgeon heterocercal tail is extremely flexible and the upper tail lobe trails the lower during the fin beat cycle. Origin Mid 19th century: from hetero- 'other' + Greek kerkos 'tail'.
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