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对太湖产、天津产两个大银鱼生态群生物学特性比较结果 :可数可量性状指标差异很小 ,属于同一品种 ;具有相似的生长规律 ,但太湖生态群的生长性能要优于天津生态群 ;从繁殖力指标分析 ,太湖生态群的繁殖力高于天津生态群 ;两种大银鱼生态种群具有相似的食性特征。
The results of the comparison of the biological characteristics of two large silverfish ecological groups in Taihu Lake and Tianjin showed that the index of countable and measurable traits showed little difference and belonged to the same species with similar growth pattern but the growth performance of Taihu Lake ecological group was better than that of Tianjin From the analysis of fertility index, the fecundity of Taihu ecological group was higher than that of Tianjin ecological group. The ecological populations of two species had similar feeding characteristics.