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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 96, No. 8, 2001, pp. 1153-1159
Bioline Code: oc01220
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 96, No. 8, 2001, pp. 1153-1159

 en Spermatogenesis and Spermiogenesis in Didymocystis wedli check for this species in other resources Ariola, 1902 (Didymozoidae, Digenea)
MC Pamplona-Basilio; MFD Baptista-Farias & A Kohn


The ultrastructure of the male reproductive system of Didymocystis wedli check for this species in other resources was studied for the first time, demonstrating spermiogenesis and spermatogenesis at different cell stages. The spermatozoa morphology was compared with that of other Digenea species.

It was observed that the different cells of the spermatogenesis process follow the classic pattern reported for the majority of the parasitic platyhelminthes. During spermiogenesis, rootlet fibers, electrondense bodies and median cytoplasmic process were not observed. The mature spermatozoa of D. wedli were filiform, presenting nucleus, mitochondrion and two 9+1 axonemes, with a biflagellate distal extremity.

spermatogenesis, spermiogenesis, Digenea, Didymocystis wedli

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