Histological and ultrastructural study of the testes of Testudo graeca (Testudinidae)".

IBARGUENGOYTIA, NORA RUTH, PASTOR GARCIA, LUIS MIGUEL Y PALLARES, JACINTO

JOURNAL OF SUBMICROSCOPIC CYTOLOGY AND PATHOLOGY

: N I E Nuova Immagine Editrice.

Año: 1999 p. 221 - 230

1122-9497

Adult males of Testudo graeca used to preliminary study the light microscopic morphology and the ultrastructure of the testes. Spermiogenesis has shown the presence of some interspecific vairations among Chelonia, while the general features of the testes and spermatocytes are morphologically similar to other reptilians. The male reproductive state observed in the months analysed has shown spermatogenesis recrudescence in spring, a complete germinal series in autumn and testicualr regression in winter. The observation of ultrastructural features, characteristic of steroidogenic activity in winter and active synthesis in spring and autumn. In conclusion, the results of this histological study suggest a probable asynchrony between the male and female reproductive cycle in this species and show synchrony in the steroidogenci activity of Sertoli and Leydig cells.  Adult males of Testudo graeca used to preliminary study the light microscopic morphology and the ultrastructure of the testes. Spermiogenesis has shown the presence of some interspecific vairations among Chelonia, while the general features of the testes and spermatocytes are morphologically similar to other reptilians. The male reproductive state observed in the months analysed has shown spermatogenesis recrudescence in spring, a complete germinal series in autumn and testicualr regression in winter. The observation of ultrastructural features, characteristic of steroidogenic activity in winter and active synthesis in spring and autumn. In conclusion, the results of this histological study suggest a probable asynchrony between the male and female reproductive cycle in this species and show synchrony in the steroidogenci activity of Sertoli and Leydig cells.  Adult males of Testudo graeca used to preliminary study the light microscopic morphology and the ultrastructure of the testes. Spermiogenesis has shown the presence of some interspecific vairations among Chelonia, while the general features of the testes and spermatocytes are morphologically similar to other reptilians. The male reproductive state observed in the months analysed has shown spermatogenesis recrudescence in spring, a complete germinal series in autumn and testicualr regression in winter. The observation of ultrastructural features, characteristic of steroidogenic activity in winter and active synthesis in spring and autumn. In conclusion, the results of this histological study suggest a probable asynchrony between the male and female reproductive cycle in this species and show synchrony in the steroidogenci activity of Sertoli and Leydig cells.  Adult males of Testudo graeca used to preliminary study the light microscopic morphology and the ultrastructure of the testes. Spermiogenesis has shown the presence of some interspecific vairations among Chelonia, while the general features of the testes and spermatocytes are morphologically similar to other reptilians. The male reproductive state observed in the months analysed has shown spermatogenesis recrudescence in spring, a complete germinal series in autumn and testicualr regression in winter. The observation of ultrastructural features, characteristic of steroidogenic activity in winter and active synthesis in spring and autumn. In conclusion, the results of this histological study suggest a probable asynchrony between the male and female reproductive cycle in this species and show synchrony in the steroidogenci activity of Sertoli and Leydig cells.  Adult males of Testudo graeca used to preliminary study the light microscopic morphology and the ultrastructure of the testes. Spermiogenesis has shown the presence of some interspecific vairations among Chelonia, while the general features of the testes and spermatocytes are morphologically similar to other reptilians. The male reproductive state observed in the months analysed has shown spermatogenesis recrudescence in spring, a complete germinal series in autumn and testicualr regression in winter. The observation of ultrastructural features, characteristic of steroidogenic activity in winter and active synthesis in spring and autumn. In conclusion, the results of this histological study suggest a probable asynchrony between the male and female reproductive cycle in this species and show synchrony in the steroidogenci activity of Sertoli and Leydig cells.  Adult males of Testudo graeca used to preliminary study the light microscopic morphology and the ultrastructure of the testes. Spermiogenesis has shown the presence of some interspecific vairations among Chelonia, while the general features of the testes and spermatocytes are morphologically similar to other reptilians. The male reproductive state observed in the months analysed has shown spermatogenesis recrudescence in spring, a complete germinal series in autumn and testicualr regression in winter. The observation of ultrastructural features, characteristic of steroidogenic activity in winter and active synthesis in spring and autumn. In conclusion, the results of this histological study suggest a probable asynchrony between the male and female reproductive cycle in this species and show synchrony in the steroidogenci activity of Sertoli and Leydig cells.