Advertisement

Parasitology Research

, Volume 86, Issue 4, pp 301–310 | Cite as

Ultrastructure of spermiogenesis and the spermatozoon of Opecoeloides furcatus (Trematoda, Digenea, Opecoelidae), a parasite of Mullus barbatus (Pisces, Teleostei)

  • Jordi Miquel
  • Cecilia Nourrisson
  • Bernard Marchand
ORIGINAL PAPER

Abstract

Spermiogenesis and mature spermatozoa of Opecoeloides furcatus (Digenea, Opecoelidae) are described by means of transmission electron microscopy. Spermiogenesis in this fluke matches the general pattern of digenetic trematodes. Striated rootlets associated with the two centrioles and an intercentriolar body are present in the differentiation zone. Flagellar rotation of two flagella and their proximodistal fusion with a median cytoplasmic process also characterize the spermiogenesis of O. furcatus. Nevertheless, asynchronicity is reported for the proximodistal fusion of the two flagella. Mature spermatozoa of O. furcatus are filiform, tapering at both ends and they present all the characteristic features found in the Digenea gamete: two flagella, mitochondrion, nucleus and two bundles of parallel cortical microtubules. Nevertheless several peculiarities distinguish the mature spermatozoon of O. furcatus from the gamete of other digenetic trematodes.

Keywords

Electron Microscopy Transmission Electron Microscopy Characteristic Feature General Pattern Mature Spermatozoon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Jordi Miquel
    • 1
  • Cecilia Nourrisson
    • 2
  • Bernard Marchand
    • 2
  1. 1.Laboratori de Parasitologia, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, E-08028 Barcelona, Spain e-mail: jmiquel@farmacia.far.ub.es, Fax: +34-93-4024504ES
  2. 2.Département d'Écologie Évolutive, Laboratoire Arago, Université Pierre et Marie Curie (Paris 6), CNRS UMR 7628, F-66651 Banyuls-sur-Mer Cedex, FranceFR

Personalised recommendations