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Título: | Fine structure of spermatozoa in the gilthead sea bream (Sparus aurata Linnaeus, 1758) (Perciformes, Sparidae) |
Fecha de publicación: | 2007 |
Editorial: | Murcia : F. Hernández |
ISSN: | 0213-3911 |
Materias relacionadas: | 636 - Veterinaria. Explotación y cría de animales. Cría del ganado y de animales domésticos |
Palabras clave: | Sperm ultrastructure Fish |
Resumen: | Scanning and transmission electron microscopy were used to investigate the fine structure of the sperm of the sparid fish Sparus aurata L. The mature spermatozoon of gilthead sea bream belongs, like that of the other sparid fish, to a “type I” as defined by Mattei (1970). It has a spherical head which lacks an acrosome, a short, irregularly-shaped midpiece and a long cylindrical tail. The nucleus reveals a deep invagination (nuclear fossa) in which the centriolar complex is located. The two centrioles are approximately perpendicular to each other and show a conventional “9+0” pattern. The proximal centriole is associated with a cross-striated cylindrical body lying inside a peculiar satellite nuclear notch which appears as a narrow invagination of the nuclear fossa. The distal centriole is attached to the nuclear envelope by means of a lateral plate and radial fibres made of an electron-dense material. The short midpiece houses one mitochondrion. The flagellum is inserted perpendicularly into the base of the nucleus and contains the conventional 9+2 axoneme. |
Autor/es principal/es: | Maricchiolo, G. Genovese, L. Laurà, R. Micale, V. Muglia, U. |
Forma parte de: | Histology and histopathology |
URI: | http://hdl.handle.net/10201/27529 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 5 |
Derechos: | info:eu-repo/semantics/openAccess |
Aparece en las colecciones: | Vol.22, nº 1 (2007) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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Fine structure of spermatozoa in the gilthead sea bream Sparus aurata Linnaeus 1758 Perciformes Sparidae.pdf | 940,8 kB | Adobe PDF | Visualizar/Abrir |
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