hydratuban.

/ˌhʌɪdrəˈtjuːbə/

Etymology: < hydra n. 6 + tuba n.¹, formerly Hydra tuba, when the organism was thought to be a species of Hydra; in reference to the shape of the larva.

The polyp-like larval stage of a jellyfish of the class Scyphozoa; a scyphistoma.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Scyphozoa > member of > larval

hydratuba1847

scyphistoma1870

scyphostoma1878

1847 J. G. Dalyell Rare Animals Scotl. I. iii. 76 (heading) Hydra tuba, the Trumpet Polypus.

1847 J. G. Dalyell Rare Animals Scotl. I. iii. 77 The body of the hydra tuba is a hollow cone five lines in length, thick and fleshy.

1898 A. Sedgwick Student's Text-bk. Zool. I. iv. 159 In the Ephyroninæ the development is generally accompanied by an alternation of generations; the asexual generations being represented by the Scyphistoma (Hydra tuba) and Strobila; but in exceptional cases it is direct (Pelagia).

1901 A. E. Shipley & E. W. MacBride Zool. iii. 64 Each [planula] fixes itself and develops into a little polyp, called a Hydratuba, not unlike a Hydra in appearance.

1927 Glasgow Herald 5 Nov. 6/2 This [sc. the larva] settles as a polyp-like form, the hydratuba, and this, by a kind of budding, gives origin to little saucer-like discs which grow into medusæ.

1932 L. A. Borradaile & F. A. Potts Invertebrata v. 155 At certain seasons the whole hydratuba is segmented by transverse horizontal furrows.

1951 Microscope VIII. 193 (title) Planula, hydratuba and ephyra stages of the common jellyfish.

This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2018).

单词	hydratuba
释义	hydratuban. /ˌhʌɪdrəˈtjuːbə/ Etymology: < hydra n. 6 + tuba n.¹, formerly Hydra tuba, when the organism was thought to be a species of Hydra; in reference to the shape of the larva. The polyp-like larval stage of a jellyfish of the class Scyphozoa; a scyphistoma. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Scyphozoa > member of > larval hydratuba1847 scyphistoma1870 scyphostoma1878 1847 J. G. Dalyell Rare Animals Scotl. I. iii. 76 (heading) Hydra tuba, the Trumpet Polypus. 1847 J. G. Dalyell Rare Animals Scotl. I. iii. 77 The body of the hydra tuba is a hollow cone five lines in length, thick and fleshy. 1898 A. Sedgwick Student's Text-bk. Zool. I. iv. 159 In the Ephyroninæ the development is generally accompanied by an alternation of generations; the asexual generations being represented by the Scyphistoma (Hydra tuba) and Strobila; but in exceptional cases it is direct (Pelagia). 1901 A. E. Shipley & E. W. MacBride Zool. iii. 64 Each [planula] fixes itself and develops into a little polyp, called a Hydratuba, not unlike a Hydra in appearance. 1927 Glasgow Herald 5 Nov. 6/2 This [sc. the larva] settles as a polyp-like form, the hydratuba, and this, by a kind of budding, gives origin to little saucer-like discs which grow into medusæ. 1932 L. A. Borradaile & F. A. Potts Invertebrata v. 155 At certain seasons the whole hydratuba is segmented by transverse horizontal furrows. 1951 Microscope VIII. 193 (title) Planula, hydratuba and ephyra stages of the common jellyfish. This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2018). < n.1847
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