Tham khảo tài liệu 'aquaculture part 10', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Measurements Population Growth and Fecundity of Daphnia Magna to Different Levels of Nutrients Under Stress Conditions 261 Interactions Even though there was not statistic relation p between the parameters of maximum density daily media density and final weight on the adult population there was a nutrient significant correlation p The yeast nutrient was highly significant p on the 30 ppm concentration on the maximum density with cladocerans per volume while the treatments with a concentration of 15 ppm of yeast had cladocerans per volume on a concentration of 30 ppm. Similarly happened with the final weight that presented values of mg in 15 ppm and in 30 ppm presenting a mayor value on final weight on the diet with 30 ppm yeast concentration. A highly significant relation was found between the three nutrients. With yeast and potato with concentrations of 30 ppm and 15 ppm respectively the highest value on the variable maximum density was found with cladocerans per volume. The daily media density presented significance p in the relation between the potato and the enrichment presenting the highest value for cladocerans per volume per day in the concentrations of 30 ppm and 15 ppm respectively. The daily media density does not seem influenced by yeast addition. The mortality rate presented significant differences in relation with yeast and enrichment nutrients. The mayor mortality was shown in the treatment with yeast 30 ppm and enrichment of 15 ppm with cladocerans per day. Also it was a highly significant difference p with using potato and enrichment nutrients in the same concentration of 15 ppm. It seems that enrichment concentrations have an impact in the mortality of adult populations of cladocerans. About the relation of nutrients found in the growth rate duplication time and performance two of the three nutrients presented a highly significant .
