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文章对在东北雅罗鱼的繁殖季节、生长季节采集的材料鱼的形态特征、部分生物学特性进行测量分析,结果表明:达里湖东北雅罗鱼种群的年龄结构不合理,存在资源衰退和捕捞过度的问题,捕捞规格应为体长大于17cm,体重大于83g。依据测量分析结果推算出东北雅罗鱼体长生长、体重生长与年龄的拟合方程。研究出该湖主要限制因子是其水体中过高的总碱度和 pH 值以及 Ca~(2+)的严重缺乏。
In this paper, the morphological characteristics and some biological characteristics of the Arboreal fish collected from the breeding season and growing season of northeast China were measured and analyzed. The results showed that the age structure of the Arodon species in Northeast Dali Lake was unreasonable, The problem of overfishing, fishing specifications should be more than 17cm body length, weight greater than 83g. According to the results of the measurement and analysis, the fitted equation of body length growth, body weight growth and age were calculated. It is found that the main limiting factor of this lake is the excessively high total alkalinity and pH, as well as the serious deficiency of Ca2 + in the water.