Sperm ultrastructure of the digenean Aphallus tubarium (Rudolphi, 1819) Poche, 1926 (Platyhelminthes, Cryptogonimidae) intestinal parasite of Dentex dentex (Pisces, Teleostei) |
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Authors: | Foata J Quilichini Y Greani S Marchand B |
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Institution: | CNRS UMR 6134, University of Corsica, “Parasites and Mediterranean Ecosystems” Laboratory, BP 52, 20250 Corte, France |
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Abstract: | The ultrastructural organization of the spermatozoon of a cryptogonimid digenean, Aphallus tubarium, a parasite of Dentex dentex, is described. The spermatozoon possesses the elements found in other digeneans: two axonemes with 9 + “1” pattern, a mitochondrion, a nucleus, cortical microtubules, external ornamentation and spine-like bodies. However, the mitochondrion appears as a cord with a bulge; this characteristic has never been described in other studied cryptogonimid and in other digeneans except in one lepocreadiid, Holorchis micracanthum. Likewise, the presence of a thin cytoplasm termination in the anterior part of the spermatozoon has never been pointed out in the cryptogonimids. |
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Keywords: | Ultrastructure Spermatozoon Dentex dentex Digenea Cryptogonimidae TEM |
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