The Role of Thyroid Hormone in Fish Development with Reference to Aquaculture

The Role of Thyroid Hormone in Fish Development with Reference to Aquaculture,Keisuke YAMANO

The Role of Thyroid Hormone in Fish Development with Reference to Aquaculture   (Citations: 20)
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Recent progress in an understanding of the role of thyroid hormone (TH) on fish development was reviewed with particular reference to fish farming. TH is a small liposoluble hormone produced in thyroid follicles and has two bioactive forms, tetraiodothyronine (thyroxine, T4) and triiodothyronine (T3). Mother fish deposits a considerable amount of TH in developing oocytes. The amount of TH and ratio of T3 to T4 in eggs vary among species and stocks of the same species. The role of TH in eggs is not yet clear, though enhanced survival and growth of embryos and larvae by the enrichment of the eggs with TH have been reported in some cases. On the other hand, the role of TH that promotes larva- juvenile transition or metamorphosis has been established in teleost fish. The level of TH elevates at the onset of metamorphosis, and the treatment with TH can induce precocious metamorphosis. Con- sidering the TH role in fish development, the disorder of its proper function could lead to deformity in juveniles, which is frequently observed in hatchery. In addition, many environmental chemicals have potential disrupting TH function in developing embryos and juveniles of fish.
Published in 2005.
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    • ...Thyroid hormones (THs), both thyroxine (T4) and triiodothyronine (T3), appear to be the most important endocrine regulators of metamorphosis in flatfish and other teleost fish (Campinho et al, 2006, 2007b; de Jesus et al, 1990, 1998; Inui and Miwa, 1985; Leatherland, 1994; Llewellyn et al, 1998, 1999; Miwa and Inui, 1987a, 1987b, 1991; Miwa et al, 1988, 1992; Power et al, 2001; Schreiber and Specker, 1998, 1999, 2000; Soffientino and Specker, 2003; Szisch et al, 2005; Yamano, 2005; Yamano and Miwa, 1998; Yamano et al, 1991a, 1991b, 1994b)...

    Deborah M. Poweret al. The Molecular and Endocrine Basis of Flatfish Metamorphosis

    • ...The role of a certain elevated level of TH necessary for the onset of metamorphosis in Wsh (Yamano 2005), frog (Callery and Elinson 2000) and at diVerent time points in altricial or precocial mammals (McNabb 1988) for the individual organs or cells is not clearly understood...

    Harald Winteret al. Thyroid hormone receptor α1 is a critical regulator for the expression...

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