Encyclopedia of Parasitology

2016 Edition
| Editors: Heinz Mehlhorn


Reference work entry
DOI: https://doi.org/10.1007/978-3-662-43978-4_3075

Sexual process in which differently determined Gametes fuse completely, whether they include large (iso- or  anisogametes) or only small ( Microgametes) amounts of cytoplasmic material. Syngamy always starts with the fusion of the limiting membranes (Gametes, Figs. 4, 5), thus leading to a unicellular diplokaryon. Although karyogamy may be more or less delayed, depending on the species, no further fertilization can occur along the surface of such  zygote, whether a fertilization membrane (as in some eimerian species) is formed or not.

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