Translation Series No.997

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asis of (ek-1) 100%. The values E 0 and k, required for calculation of the relative increase, were obtained with the help of the method of least squares for each of the four series (each series had 3-4 test lines) as a result of calculation by means of the formula for exponential growth (ek--1) 1010%. , where Et - number of rotifers in a clone during time t; E0 - original number of rotifers; k- coefficient; t- time in days. 5. 2[ tga aa 2 0.911 b Or 45 0,5 17 4 e'itte ° 1 2 -1-4 4 1-474111 -2' 4"---1 1 4 tai: 45 tg /7 e 11 1 5 1- i9 /I x >
Table 1 Table 2 Relationship of rate of increase Relationship of rate of increase of rotifers at food concentrations in rotifers to food concentrations during individual cultivation in 'experiments with populations 6. Kommnpauird 'noun m:nt KAMA 5 3 1 0,5 ' 0,1 eei.) (b) OnlocniummWi 111)111 , 0C r 3:t cynut ILOU, (C) 1,206 1,675 67,5 0,709 1,172 47, 9 0,709 1,472 47,2 0,86 9 1,165 16,5 1,000 0 ; 11,10111111101 0, 5 3 —0 :JWV.W.1 MaL—(C)-- 1 0 1 0 1 0 23,80 40,05 75,60 e K 1,535 2,011 2,746 53,5 101,4 174,6 Legend: a- food concentration Legend: in millions of cells/ml; b- E 0 ; o- ek ; d- relative increase per day (ek-1).100% a - b - c - food concentration in millions of cells/ml; E 0 specimens/m1; E2 specimens/ml; Even though in ail cases the test clones . began from one parthenogenetic female the computed values for E 0 deviated significantly from unity. The explanation is that the increase on the first day is not typical for the subsequent period of exponential growth of the clone due to adaptation of the organism to conditiore during the first day. Greater increase follows /505 A a corresponding inerease in food concentration. The greatest value for daily increase was obtained at an algae concentration of 5 million cells/ml and amounts to 67.5%. When the concentration is , greater than this (up to 60 million cells/ml) greater increase.in rotifers was not observed. The results of individual cultivation have essential significance since they showed the greater increase in rotifers with increasing concentration of food up to very dense concentrations, meanwhile, the exponential growth of the clone was preserved. For rotifer population cultivation the increase was evaluated using three food concentrations: 0.5, 1.0, and 3.0 million cells/ml. The experiment with population was carried out
Page 1 and 2: FISHERIES RESEARCH BOARD OF CANADA
Page 3 and 4: To find the conditions that would g
Page 5: The graph shows that the data obtai
Page 9 and 10: Experiments were also carried out o
Page 11 and 12: 120- 8 1115 - ‘; 7 90- 6 75- ?, 5
Page 13 and 14: 11. Up to maximum ration the assimi
Page 15: • • -• 7-r• al•• • 13

Translation Series No.997

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