. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 13 . 12 .. 5 . 20 40 60 80 100 120 CMP mg% 140 20 40 60 80 1OO CMP mg% 120 140 FIGURE 4. (Left.) Effect on growth of actinomycin D (2 ^g %) (filled circles) and of puromycin (200 Mg %) (open circles) in relation to the AMP:CMP ratio. AMP constant at 60 mg %. FIGURE 5. (Right.) Effect on growth of actinomycin D (2 Mg %) (filled circles) and of puromycin (200 Mg %) (open circles) in relation to the AMP:CMP ratio. AMP constant at 100 mg %. centration. As seen in Table I, an albumin deficiency but not an albumin excess suppresse
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 13 . 12 .. 5 . 20 40 60 80 100 120 CMP mg% 140 20 40 60 80 1OO CMP mg% 120 140 FIGURE 4. (Left.) Effect on growth of actinomycin D (2 ^g %) (filled circles) and of puromycin (200 Mg %) (open circles) in relation to the AMP:CMP ratio. AMP constant at 60 mg %. FIGURE 5. (Right.) Effect on growth of actinomycin D (2 Mg %) (filled circles) and of puromycin (200 Mg %) (open circles) in relation to the AMP:CMP ratio. AMP constant at 100 mg %. centration. As seen in Table I, an albumin deficiency but not an albumin excess suppressed the morphogenetic action of a reduced AMP:CMP ratio. DISCUSSION The results obtained by studying the effects of actinomycin D and of puromycin in relation to the AMP:CMP ratio in the diet suggest that the supernumerary gonopodes induced in larvae reared in a medium containing a reduced AMP:CMP ratio result from a reduced RNA:protein ratio. Artemia, being incapable of de novo synthesis of the purine ring (Clegg et al., TABLE I Effects of a reduced AMP:CMP ratio in relation to the albumin concentration of the diet. AMP = 60 mg % CMP = 100 mg % Growth index 14th day Larval survival' (percentage) Morphogenesis of appendages Albumin mg % 5 90 normal 20 60 80 60 supernumerary gonopodes supernumerary gonopodes 1 Percentage of larvae reaching growth index 10, independent of their growth Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
