Abstract
Effect of experimentally induced thyroxine overdose on the testis and seminal vesicles was studied in the air-breathing catfish, Clarias gariepinus during the preparatory and the pre-spawning phase. The present study revealed a marked reduction in testosterone level in serum, testis and seminal vesicles (SV). Histological examination showed a considerable reduction in the number of spermatozoa/spermatids in the seminiferous tubular lumen as well as depletion of fluid in the loculi of SV. SDS-PAGE analysis of SV fluid proteins demonstrated a significant decrease in the level of a ~27 kDa protein in thyroxine treated fishes. Evidences are presented here to indicate that thyroid hormone plays a role in regulating testis and SV function in catfish.
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T.N. Jacob and J.P. Pandey contributed equally
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Jacob, T.N., Pandey, J.P., Raghuveer, K. et al. Thyroxine-induced alterations in the testis and seminal vesicles of air-breathing catfish, Clarias gariepinus . Fish Physiol Biochem 31, 271–274 (2005). https://doi.org/10.1007/s10695-006-0035-0
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DOI: https://doi.org/10.1007/s10695-006-0035-0