Gallissian, M.-F. (1980). Etude ultrastructurale de la fécondation chez Grantia compressa F. International Journal of Invertebrate Reproduction. 2: 321-329.

365425

Gallissian, M.-F.

1980

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

Porifera

RIS (EndNote, Reference Manager, ProCite, RefWorks)
BibTex (BibDesk, LaTeX)

[Back to search]