DAILY FEEDING CYCLE TENCH, Tinca tinca (L.), IN LARVAL AND FRY STAGES IN THE CONDITIONS OF POND CULTURE. AN ATTEMPT TO DETERMINE DAILY FOOD RATION
Keywords:
POND, TENCH, LARVAE, FRY, FOOD, DAILY FEEDING RHYTHM, DAILY RATION
Abstract
The paper presents variability in food composition and daily feeding rhythm of tench larvae and fry. Daily food ration has been estimated for the larvae of average individual weight of 44.3 mg and average daily water temperature of 24.6oC. It amounted to from 6.3 to 6.9 % of average body weight, depending on the formula used (Thorpe 1977 or Eliott and Persson 1978). Daily food ration of tench fry of average individual weight 648.1 mg, calculated with the method of Thorpe (1977), was 1.1 % of body weight at water temperature 8.2oC.
