Fine structure of spermatozoa in the common pandora (Pagellus erythrinus Linnaeus, 1758) (Perciformes, Sparidae)

• G. Maricchiolo ^[2] ; L. Genovese ^[2] ; R. Laurà ^[1] ; V. Micale ^[2] ; U. Muglia ^[1]
  1. [1] University of Messina

     University of Messina

     Mesina, Italia

     
  2. [2] Institute for Coastal Marine Environment

     Institute for Coastal Marine Environment

     Nápoles, Italia

     
• Localización: Histology and histopathology: cellular and molecular biology, ISSN-e 1699-5848, ISSN 0213-3911, Vol. 19, Nº. 4, 2004, págs. 1237-1240
• Idioma: inglés
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• Resumen

  • Scanning and transmission electron microscopy were used to investigate the fine structure of the sperm of the Sparid fish Pagellus erythrinus L.. The spermatozoon of pandora has a spherical head lacking an acrosome, a cone-shaped midpiece and a long tail. The midpiece houses a single mitochondrion. The centriolar complex lies inside the nuclear fossa and is composed of a proximal and a distal centriole which are arranged at right angles to each other. The flagellum is inserted medio-laterally into the head, contains the conventional 9+2 axoneme and possesses one pair of lateral fins. On the basis of its ultrastructural organization, the pandora sperm can be regarded as an evolved form of the primitive spermatozoon found in Teleosts. According to the morphological classification proposed by Mattei (1970), the sperm of pandora belongs to a “type I” designation, like that of the other Sparid fish.