甲状腺素对鱼的一些重要的生物学过程,如成长、性别发育、渗透压调节、形态变化、温度忍耐力、迁移、氧气耗量和皮肤的银色光泽等起作用。甲状腺索 T_4和 T_3均存在于鱼的血液中。在鱼体中,已经证明 T_4通过外环脱碘作用可转换成 Thyroxine plays a role in some of the fish’s important biological processes such as growth, gender development, regulation of osmotic pressure, morphological changes, temperature endurance, migration, oxygen consumption and the skin’s silver luster. Thyroid cord T_4 and T_3 are present in the fish’s blood. In fish, it has been shown that T_4 can be converted to iodide via the outer ring