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Spermiogenesis and sperm ultrastructure of Cotylophoron cotylophorum (Trematoda, Digenea, Paramphistomidae), a parasite of Bos taurus in Senegal

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Abstract

Ultrastructure of spermiogenesis and mature spermatozoon of Cotylophoron cotylophorum are described with transmission electron microscopy. The description gives evidence of some characteristics of this digenean. The intercentriolar body situated between two striated roots and two centrioles exhibits a symmetric plane. The external bands of this intercentriolar body are formed of a line 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 part, by the presence of a lateral expansion exhibiting a spinelike body. External ornamentations of the plasmic membrane are only present at the level of the ventral field of cortical microtubules. The posterior end of this spermatozoon exhibits a nucleus surrounded by a plasmic membrane without cortical microtubules, but exhibiting a small lateral expansion.

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Authors and Affiliations

  1. Institut Sénégalais de Recherches Agricoles (ISRA)/Laboratoire National d’Elevage et de Recherches Vétérinaires (LNERV) de Hann, B.P. 2057, Dakar, Sénégal

    Momar Talla Seck

  2. Laboratoire Parasites et Ecosystèmes Méditerranéens, Faculté des Sciences et Techniques, Université de Corse, Campus Grossetti, B.P. 52, F-20250, Corte, France

    Bernard Marchand

  3. Laboratoire de Parasitologie-Helminthologie, Département de Biologie animale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop de Dakar, B.P. 5005, Dakar, Sénégal

    Cheikh Tidiane Bâ

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  1. Momar Talla Seck
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  2. Bernard Marchand
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  3. Cheikh Tidiane Bâ
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Correspondence to Momar Talla Seck.

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Seck, M.T., Marchand, B. & Bâ, C.T. Spermiogenesis and sperm ultrastructure of Cotylophoron cotylophorum (Trematoda, Digenea, Paramphistomidae), a parasite of Bos taurus in Senegal. Parasitol Res 103, 157–166 (2008). https://doi.org/10.1007/s00436-008-0944-1

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  • DOI: https://doi.org/10.1007/s00436-008-0944-1

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