梭鱼实验种群样本,系于1987年5月,从山东大沽河口搜集的亲鱼经人工授精后孵出的仔鱼在实验室培育取得;自然种群样本,于同年同地区采集。对于实验种群耳石生长轮形成的周期性进行了研究。结果表明,实验种群培育天数(D)与耳石生长轮数(N)之间的关系以回归式N=D-1.89表达之;根据实验种群耳石轮纹形成的周期性规律,鉴定了自然种群的日龄,表明二者具相似的周期性规律;协方差分析表明,梭鱼早期阶段的生长,自然种群比实验种群快。 The experimental population of mullet was collected in laboratory in May 1987 after the artificial insemination of broodstock collected from Dagu estuary in Shandong Province. The samples of natural population were collected in the same year. The periodicity of the formation of otolith growth wheel in experimental population was studied. The results showed that the relationship between days (D) and the number of otolith growth wheels (N) was expressed by the regression equation N = D-1.89. According to the periodicity of otolith formation in the experimental population, The age of the population showed that the two had similar periodic patterns. Covariance analysis showed that the growth of the early stage of the barracuda was faster than the natural population.