SciELO - Scientific Electronic Library Online

 
vol.28 número2Diferencias en el Crecimiento Corporal entre Futbolistas y Jugadores de Baloncesto JóvenesAnatomía de la Cabeza Femoral Humana: Consideraciones en Ortopedia, Parte I. Anatomía y Relaciones Antropométricas del Fémur Proximal índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


International Journal of Morphology

versión On-line ISSN 0717-9502

Resumen

MIRA LOPEZ, Tatiana M; MEDINA-ROBLES, Víctor M  y  CRUZ-CASALLAS, Pablo E. Testicular Morphology of Yaque Leiarius marmoratus(Pisces: Siluridae) in Maturity Reproductive Stage. Int. J. Morphol. [online]. 2010, vol.28, n.2, pp.421-426. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022010000200015.

Knowledge of the morphology and physiology of the testis, leads to generate bases for understanding the reproductive behavior of species, because the anatomical differences are related to reproductive performance. To contribute to biologic and reproductive knowledge of Yaque Leiarius marmoratus, anatomic, morphologic and functional characteristics of the testis in animals in a state of reproductive maturity were analyzed. In L. marmoratus, the testicles are located ventrally to the gas bladder and have many long finger-like structures that finish in spermatic duct. Microscopically it was found that the testis is espermatogonial unrestricted and tubular type, where the anterior portion presented spermatogenic activity, which diminishes in the medium portion and disappears in the caudal portion, leading to tissue with glandular secretory activity serving as a seminal vesicle. Inside each tubule of the testis, there are cysts containing sperm cells within the same stage of development. Based on microscopic features, were identified spermatocytes, spermatids and a large amount of free sperm into the lumen. Glandular cells were also identified, as well as smooth muscle tissue and epithelial tissue. In the spermatic duct (medium and distal portion), acidophilous secretion was abundant and in some regions were accompanied by free spermatozoa.

Palabras clave : Catfish; Histology; Reproductive tract; Seminal vesicle.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons