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本文主要描述池塘养殖条件下鲥鱼幼鱼的生长与食性。1)1987—1989年8月至11月幼鱼生长迅速,快于同期珠江天然个体的生长速度;2)体长26.6—94.9mm的幼鱼主要摄食浮游动物,轮虫和浮游植物出现率随个体增大而减少。食物共有18个属种,摄食频度为100％;3)幼鱼的平均饱满指数为75.70‰。各类食物重量百分比的顺序为:桡足类>枝角类>无节幼体>虾类溞状幼体>轮虫>藻类。
This article mainly describes the growth and feeding of juvenile catfish under pond culture conditions. 1) The juveniles grew rapidly from August to November 1987-1989, faster than the growth rate of natural individuals in the Pearl River during the same period from 1987 to 1989. 2) The prevalence of zooplankton, rotifers and phytoplankton in juvenile with body length of 26.6-94.9 mm Individuals increase and decrease. A total of 18 species of food, feeding frequency of 100%; 3) juvenile average plump index was 75.70 ‰. The order of the weight percentages of all kinds of food is: copepods> cladocerans> nauplii> shrimp juvenile> rotifer> algae.