WoRMS source details
Gallissian, M.-F. (1980). Etude ultrastructurale de la fécondation chez Grantia compressa F. International Journal of Invertebrate Reproduction. 2: 321-329.
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Gallissian, M.-F.
1980
Etude ultrastructurale de la fécondation chez <i>Grantia compressa</i> F.
International Journal of Invertebrate Reproduction
2: 321-329
Publication
Available for editors [request]
The fertilization of a calcareous sponge is studied by means of the electron microscope,
in Grantia compressa F . The mature oocyte lies beneath the choanoderm; the
carrier cell is applied to its surface, and the spermiocyst enters its cytoplasm. The ultrastructural study demonstrates two formations in this spermiocyst: (i) the 'head', surrounded by a lamellar envelope, consists mainly of a nucleus with ring-shaped chromatin; (ii) a large area with a periodic structure corresponding to the modified 'middle piece' or 'mitochondrial body' of other authors.
English Channel
Reproduction
Date
action
by
Grantia compressa (Fabricius, 1780) (biology source)
Reproduction
Viviparous. Study of fecondation of carrier-cell and spermiokyste. [details]