Abstract
In the present study, thiourea-induced thyroid hormone depletion and thyroxine (T4) ‘overdose’ were used as a strategy to understand the influence of thyroid hormones on ovarian recrudescence of juvenile (3-months-old), immature (8-months-old) and adult (1-year-old) air-breathing catfish, Clarias gariepinus. Thiourea-induced thyroid hormone depletion in juvenile catfish impaired ovarian development, but no significant effect was observed in immature catfish and during late stage of ovarian recrudescence of mature catfish. T4 treatment in females undergoing late stages of ovarian recrudescence induced rapid oocyte growth by promoting its early entry into maturational phase as evident from the presence of more number of vitellogenic and post-vitellogenic follicles, decrease in aromatse immunoreactivity and reduced estradiol-17β levels. Hence, thyroid hormones have an important role to play during early stages of ovarian development and vitellogenesis of catfish and also indicating that thyroid has a stage dependent effect on ovary.
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References
Chaube R, Joy KP (2003) Thyroid hormone modulation of brain in vivo tyrosine hydroxylase activity and kinetics in the female catfish, Heteropneustes fossilis. J Endocrinol 179:205–215
Matta SLP, Vilela DAR, Godinho HP, França LR (2002) The goitrogen 6-n-propyl-2-thiouracil (ptu) given during testis development increases Sertoli and germ cell numbers per cyst in fish: the tilapia (Oreochromis niloticus) model. Endocrinology 143:970–978
Mylonas CC, Scott AP, Zohar Y (1997) Plasma gonadotropin II, sex steroids, and thyroid hormones in wild striped bass (Morone saxatilis) during spermiation and final oocyte maturation. Gen Comp Endocrinol 108:223–236
Plate EM, Adams BA, Allison WT, Martens G, Hawryshyn CW, Eales JG (2002) The effects of thyroxine or a GnRH analogue on thyroid hormone deiodination in the olfactory epithelium and retina of rainbow trout, Oncorhynchus mykiss, and sockeye salmon, Oncorhynchus nerka. Gen Comp Endocrinol 127:59–65
Reine JC, Leatherland JF (2003) Trafficking of l-triiodothyronine between ovarian fluid and oocytes of rainbow trout (Oncorhynchus mykiss). Comp Biochem Physiol 136:267–274
Wallace RA (1985) Vitellogenesis and oocyte growth in nonmammalian vertebrates. In: Browder LW (ed) Developmental biology. Plenum Press, New York, pp 127–117
Weber GM, Okimoto DK, Richman NH, Grau EG (1992) Patterns of thyroxine and triiodothyronine in serum and follicle-bound oocytes of the tilapia, Oreochromis mossambicus, during oogenesis. GenComp Endocrinol 85:392–404
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Supriya, A., Raghuveer, K., Swapna, I. et al. Thyroid hormone modulation of ovarian recrudescence of air-breathing catfish Clarias gariepinus . Fish Physiol Biochem 31, 267–270 (2005). https://doi.org/10.1007/s10695-006-0034-1
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DOI: https://doi.org/10.1007/s10695-006-0034-1