Literaturdatenbank
Literaturdatenbank |
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Ibargüengoytía, N. R., Pastor, L. M., & Pallares, J. (1999). A light microscopy and ultrastructural study of the testes of tortoise testudo graeca (testudinidae). Journal of submicroscopic cytology and pathology, 31(2), 221–230.
Added by: Admin (17 Aug 2008 18:17:18 UTC) Last edited by: Beate Pfau (09 May 2009 08:59:38 UTC) |
| Resource type: Journal Article BibTeX citation key: Ibarguengoytia1999a View all bibliographic details  |
Categories: General Keywords: Histologie = histology, Morphologie = morphology, Schildkröten = turtles + tortoises, Testudinidae, Testudo, Testudo graeca Creators: Ibargüengoytía, Pallares, Pastor Collection: Journal of submicroscopic cytology and pathology |
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| Abstract |
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Testudo graeca Testudinidae Adult males of Testudo graeca were used to preliminarily study the light microscopic morphology and the ultrastructure of the testes. Spermiogenesis has shown the presence of some interspecific variations 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 testicular regression in winter. The observation of ultrastructural features, characteristic of steroidogenic activity, suggests a synchrony in tubular and interstitial compartments in T. graeca, with little 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 steroidogenic activity of Sertoli and Leydig cells. Added by: Admin Last edited by: Beate Pfau |