apopyle
the anterior opening of the tube formed by the claspers

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • apopyle — n. [Gr. apo, away; pyle, gate] (PORIFERA) An exhalent aperture from a choanocyte chamber …   Dictionary of invertebrate zoology

  • apopyle — /ap euh puyl /, n. Zool. (in sponges) a pore in each of the saclike chambers formed by the evagination of the body wall, through which water passes into the excurrent canals. Cf. prosopyle. [1885 90; APO + Gk pýle gate, entrance; see PYLON] * * * …   Universalium

  • apopyle — ap·o·pyle …   English syllables

  • apopyle — ˈapəˌpīl noun ( s) Etymology: apo + Greek pylē gate more at pylon zoology : one of the openings by which the water passes out of a radial canal or flagellated chamber of a sponge …   Useful english dictionary

  • clasper — the rod like extension of the medial portion of the pelvic fin in male Elasmobranchii and Holocephali. Claspers are used as intromittent organs (not in clasping), the grooves on their facing surfaces together forming a tube for the transmission… …   Dictionary of ichthyology

  • siphon — a blind sac at the base of the claspers communicating posteriorly with the apopyle; contracts to eject the sperm from the tube formed by the clasper in Selachii …   Dictionary of ichthyology

  • prosopyle — /pros euh puyl /, n. (in sponges) a pore through which water is drawn from the outside into one of the saclike chambers formed by the evagination of the body wall. Cf. apopyle. [1885 90; < Gk próso forward + pýle gate] * * * …   Universalium

  • SPONGIAIRES — Dans les années quatre vingt, des découvertes ont apporté des connaissances nouvelles sur plusieurs groupes de Spongiaires tant fossiles qu’actuels. Ce sont des Métazoaires essentiellement pourvus de systèmes filtreurs comprenant de petits pores… …   Encyclopédie Universelle

  • -pyle — ˌpīl noun combining form ( s) Etymology: International Scientific Vocabulary, from Greek pylē gate : opening : orifice micropyle …   Useful english dictionary

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