Biflagellate spermatozoon structure of the hermaphrodite fish Satanoperca jurupari (Heckel, 1840) (Teleostei, Cichlidae) from the Amazon River
Braz. j. biol
;
62(4b): 847-852, Nov. 2002. ilus
Artículo
en Inglés
| LILACS
| ID: lil-339384
ABSTRACT
The ultrastructural features of the sperm were studied in the hermaphroditic teleost Satanoperca jurupari HECKEL, 1840 from Amazon River. Spermatocytes, spermatids and sperm develop in the testicular cysts among the different oocyte stages. Different stages of early spermatocyte development, mainly the ones with synaptonemal complexes were often observed. The mature spermatozoa belong to the introsperm type, with a short head (aproximadamente 3 mm long and 1.3 mum wide) without acrosome, short midpiece (aproximadamente 1.2 mum long and 1.8 mum wide) containing several mitochondria surrounding two centrioles and forming a mitochondrial collar...
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Espermatozoides
/
Cíclidos
Límite:
Animales
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Braz. j. biol
Asunto de la revista:
Biologia
Año:
2002
Tipo del documento:
Artículo
País de afiliación:
Brasil
/
Portugal
Institución/País de afiliación:
Faculdade de Ciências Agrárias do Pará/BR
/
Universidade Federal do Pará/BR
/
University of Oporto/PT
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