Relation between rotifer density and amount of rotifer consumed by seabass larvae, Lates calcarifer
1985
Tida Pechmanee | Juadee Pongmaneerat | Lizawa, M. (National Inst. of Coastal Aquaculture, Songkhla (Thailand))
Larvae of 4 different sizes are examined using 6 different food densities. The amount of consumed rotifers increases with augmentation of food density and becomes constant at densities of more than the following values; 4 ind./ml. for larva aged 4-5 days, 8 ind./ml. for larva aged 7-8, 12 ind./ml. for larva aged 10-11, 32 ind./ml. for larva aged 13-14 days. The food density at which the amount of consumed rotifers becomes constant is nearly identical with the food density at which the proportion of digested individuals to total rotifers in the digestive tract becomes constant. The equation for the number of rotifers in the digestive tract during the 120 minutes following food distribution changes from type: R=c(1-e(exp.-bt)) to type: R=at.e(exp.-bt), and the peak at which the consumed amount changes from an increase to a decrease comes sooner as the larvae grow.
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