Spermiogenesis and sperm ultrastructure of Carmyerius endopapillatus (Digenea, Gastrothylacidae), a parasite of Bos taurus in Senegal

Ultrastructural study of spermiogenesis and of the spermatozoon of Carmyerius endopapillatus has enabled to describe some characteristics of this digenea. The intercentriolar body situated between the two striated roots and the two centrioles, presents a symmetric organization. Both external bands o...

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Bibliographic Details
Published in:Acta parasitologica 2008-03, Vol.53 (1), p.9-18
Main Authors: Seck, Momar T., Marchand, Bernard, Bâ, Cheikh T.
Format: Article
Language:English
Subjects:
Animal Systematics/Taxonomy/Biogeography
Biomedical and Life Sciences
Biomedicine
Carmyerius endopapillatus
Digenea
Ecology
Gastrothylacidae
Life Sciences
Medical Microbiology
Microbiology
Microbiology and Parasitology
Original Paper
Parasitology
spermatozoon
spermiogenesis
Ultrastructure
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Summary:Ultrastructural study of spermiogenesis and of the spermatozoon of Carmyerius endopapillatus has enabled to describe some characteristics of this digenea. The intercentriolar body situated between the two striated roots and the two centrioles, presents a symmetric organization. Both external bands of this intercentriolar body are made up of a row of granules. During spermiogenesis, a flagellar rotation of 90° is described. The old spermatid does not present external ornamentations. The spermatozoon is characterized, in its anterior region, by the presence of a lateral expansion exhibiting one spinelike body. In C. endopapillatus , external ornamentations are localized only at the level where the lateral expansion appears. The posterior extremity of spermatozoon exhibits a nucleus surrounded by a plasmic membrane lacking microtubules, but presenting a small lateral expansion. This is the first species of Gastrothylacidae family studied by transmission electron microscopy.
ISSN:1230-2821
1896-1851
DOI:10.2478/s11686-008-0006-y