. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. £0 60 100 140 180 20 60 100 140 180. 10 12 14 FIGURE 5. Effect of AMP/albumin ratio at 30° C; both abscissae represent AMP in mg%; starch constant at 100 mg%. Open circles represent albumin at 60 mg% ; closed circles, albumin at 20 mg%. The left and right ordinates are for growth and survival as in Figure 3. FIGURE 6. Growth rate in relation to AMP/albumin ratio and temperature, with starch constant at 100 mg% and AMP constant at 140 mg%. Open symbols indicate 25° C; closed symbols, 30° C. Circles represent albumin at 60 mg%
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. £0 60 100 140 180 20 60 100 140 180. 10 12 14 FIGURE 5. Effect of AMP/albumin ratio at 30° C; both abscissae represent AMP in mg%; starch constant at 100 mg%. Open circles represent albumin at 60 mg% ; closed circles, albumin at 20 mg%. The left and right ordinates are for growth and survival as in Figure 3. FIGURE 6. Growth rate in relation to AMP/albumin ratio and temperature, with starch constant at 100 mg% and AMP constant at 140 mg%. Open symbols indicate 25° C; closed symbols, 30° C. Circles represent albumin at 60 mg% ; triangles, albumin at 20 mg%. Abscissa indicates days; ordinate, the growth index. perature depends on the available quantities and ratios of AMP, albumin and starch. AMP requirement With starch constant at 100 mg% and albumin constant at 20 mg, the difference between growth rate at 25° C and 30° C increased with increasing AMP con- centration up to 100. mg% (Fig. 2). AMP deficiency is more detrimental at 30° C than at 25° C. Growth rate increased with increasing AMP concentration up to a 140 mg% level at 25° C and to a 180 mg% level at 30° C (Fig. 3). With increasing AMP concentration above 100 mg%, additional starch became detrimental (Fig. 4) and additional albumin beneficial (Fig. 5). The difference between growth rate at 25° C and 30° C increased with increasing AMP concen- tration above 100 mg% provided additional albumin was supplied (Fig. 6). Albumin requirement With AMP constant at 60 mg% and starch constant at 100 mg% optimal albumin concentration is 20 mg% at 25° C and 30° C, but albumin excess is less detrimental at 30° C than at 25° C (Fig. 7). At 30° C additional starch was detrimental in an albumin deficient medium and beneficial with increasing albumin concentration; however, best growth is acheived with a 100 mg% starch concen- tration and a 180 mg% AMP concentration, whatever the albumin concentration (Fig. 8).. Please note that these image
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
