【摘要】 运用双抗体放射免疫测定法研究团头鲂 (Megalobramaamblycephala)血清中甲状腺素 (T4 )和三碘甲腺原氨酸 (T3 )浓度的周年变化。血清T4 和T3 在春季性腺迅速发育时期形成峰值 ,T4 的升高比T3 早一个月。繁殖期后 ,血清T4 和T3 水平降低 ,血清T4 分别在 8月和 1 0月出现两个小峰 ;T3 在 7月 - 1 1月维持较稳定的水平。血清T4 、T3 在冬季的水平均较低。对血清甲状腺激素在春季升高的生理意义作了讨论更多还原

【Abstract】 Annual variations in serum thyroxine(T 4) and triiodo L thyronine(T 3) concentrations were measured by double antibody radioimmunoassay in the blunt snout bream(Megalobrama amblycephala). Serum T 4 and T 3 levels were elevated and up to peaks during the spring concomitant with the rapid development of gonads, the elevation of serum T 4 was in March early than the T 3, After the reproductive stage, serum levels of T 4 and T 3 declined, serum T 4 showed two small peaks in August and October respectively; Serum T 3 levels were constant throughout the Summer and Autumn (July to November). Serum T 4 and T 3 levels were low during the winter, the minimum levels of both T 4 and T 3 were in December. The physiological significance of thyroid hormone elevations during spring are discussed.更多还原