Macro and microscopical aspects of the male genital organs in the Pantanal alligator (Caiman crocodylus yacare) - DAUDIN 1802 / Aspectos macro e microscópicos dos órgãos genitais masculinos no jacaré-do-Pantanal (Caiman crocodylus yacare) - DAUDIN 1802

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Ten Young-aged male Pantanal alligators (Caiman crocodylus yacare) were used; seven specimes were destinated to macroscopic study and the other three were used in the study of light microscopy. After the opening of the pleuroperitoneal cavity, we observed and identified that testes are in pairs and adhered to the dorsal wall of the pleuroperitoneal cavity. The epididymis is long and very convoluted. It is found in the cranial extremity of the testis, following medially until its caudal extremity, where it is initiated with ductus deferens and posterior opening in the phallus. Phallus has a tubular shape in conic aspect showing to be an organ with little resistence, but it is flexible and has features of cartilaginous tissue. In the light microscopy we observed that the testis is limited by the tunica albuginea. The seminiferous tubules are extremely convoluted and its spaces are filled with intersticial tissue and Leydig cells. Tubule lined with cuboidal epithelium are found in the rete testis. The ductus epididymus are lined with by non-ciliated pseudostratified epithelium to columnar cells. Ductus deferens show a very narrow light lined by the non-ciliated columnar pseudostratified epithelium. Phallus is lined by the non-keratinized stratified squamous epithelium and connective tissue.

ASSUNTO(S)

testis genital organs of the male animal epidídimo epididymis morfologia Órgãos genitais do macho animal phallus testículo falo morphology

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