Translator Disclaimer
1 February 2004 SPERMIOGENESIS AND ULTRASTRUCTURE OF THE SPERMATOZOON OF THE LIVER FLUKE FASCIOLA GIGANTICA COBBOLD, 1856 (DIGENEA: FASCIOLIDAE), A PARASITE OF CATTLE IN SENEGAL
Papa Ibnou Ndiaye, Jordi Miquel, Cheikh Tidiane Bâ, Bernard Marchand
Author Affiliations +
Abstract

The present paper describes the spermiogenesis and the ultrastructure of the spermatozoon of Fasciola gigantica, as revealed by transmission electron microscopy. Spermiogenesis in F. gigantica begins with the formation of a differentiation zone containing 2 centrioles with associated striated roots and an intercentriolar body between them. Each centriole develops a flagellum. Proximodistal fusion of these flagella with the median cytoplasmic extension gives rise to the spermatozoon. Spermiogenesis in F. gigantica is characterized by the formation of a dorsolateral cytoplasmic expansion, an external ornamentation of the cell membrane, and spinelike bodies. These 3 structures were also observed in the anterior part of the spermatozoon. Our study describes for the first time the simultaneous presence of dorsolateral cytoplasmic expansion, external ornamentation of the plasma membrane, and spinelike bodies in the spermatozoon of a trematode.

Papa Ibnou Ndiaye, Jordi Miquel, Cheikh Tidiane Bâ, and Bernard Marchand "SPERMIOGENESIS AND ULTRASTRUCTURE OF THE SPERMATOZOON OF THE LIVER FLUKE FASCIOLA GIGANTICA COBBOLD, 1856 (DIGENEA: FASCIOLIDAE), A PARASITE OF CATTLE IN SENEGAL," Journal of Parasitology 90(1), 30-40, (1 February 2004). https://doi.org/10.1645/GE-3171
Received: 13 January 2003; Accepted: 1 June 2003; Published: 1 February 2004
JOURNAL ARTICLE
11 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top