An ultrastructural study of spermiogenesis in three species of Physalaemus (Anura, Leptodactylidae)
Biocell
; 23(3): 211-221, Dec. 1999.
Article
en En
| LILACS
| ID: lil-340364
Biblioteca responsable:
AR5.1
ABSTRACT
Ultrastructural aspects of spermiogenesis and testicular spermatozoa of three anuran amphibians, Physalaemus biligonigerus, P. fuscomaculatus and P. gracilis, were investigated by electron microscopy. The nuclei, middle pieces and tails of the three species were similar. In all cases, the nuclei were elongated and the acrosome consisted of a cone-shaped cap. The connecting pieces located in the flagellum implantation zone had transverse striations. The tails had a 9 + 2 axial filament pattern, a juxtaxonemal fiber and an undulating membrane. In contrast to other Leptodactylidae spermatozoa, no axial rod were observed in these Physalaemus species
Buscar en Google
Índice:
LILACS
Asunto principal:
Anuros
/
Especificidad de la Especie
/
Espermatogénesis
/
Espermatozoides
/
Microscopía Electrónica
Límite:
Animals
Idioma:
En
Revista:
Biocell
Asunto de la revista:
Clulas
Año:
1999
Tipo del documento:
Article