Acta Parasitologica

, Volume 53, Issue 1, pp 9–18 | Cite as

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

Original Paper

Abstract

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.

Keywords

Ultrastructure spermiogenesis spermatozoon Carmyerius endopapillatus Digenea Gastrothylacidae 

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Copyright information

© Versita 2008

Authors and Affiliations

  • Momar T. Seck
    • 1
  • Bernard Marchand
    • 2
  • Cheikh T. Bâ
    • 3
  1. 1.Institut Sénégalais de Recherches Agricoles (ISRA)Laboratoire National d’Elevage et de Recherches Vétérinaires (LNERV) de HannDakarSénégal
  2. 2.CNRS, UMR 6134, Laboratoire Parasites et Ecosystèmes Méditerranéens, Faculté des Sciences et TechniquesUniversité de CorseCorteFrance
  3. 3.Laboratoire de Parasitologie-Helminthologie, Département de Biologie Animale, Faculté des Sciences et TechniquesUniversité Cheikh Anta Diop de DakarDakarSénégal

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