. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NUTRITIONAL REQUIREMENTS OF TRIBOLIUM 225 the desired time were used. The factor of selection does not impair the value of the experimental data, however, since we are not interested in the viability of those that died before a particular age, but only in the ability of those living at a certain age to survive when transferred to a starvation diet. The data relative to the survivorship of these four groups of or- ganisms are presented in Table VII. 1000 9OO 600 70O EOC 500 300 - 200 • 1 > 100 5 90 in 60 70 60 SO 30 20. 8
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NUTRITIONAL REQUIREMENTS OF TRIBOLIUM 225 the desired time were used. The factor of selection does not impair the value of the experimental data, however, since we are not interested in the viability of those that died before a particular age, but only in the ability of those living at a certain age to survive when transferred to a starvation diet. The data relative to the survivorship of these four groups of or- ganisms are presented in Table VII. 1000 9OO 600 70O EOC 500 300 - 200 • 1 > 100 5 90 in 60 70 60 SO 30 20. 8 10 12 14 16 18 TIME IN OATS AFTER BEGINNING STARVATION 20 22 FIG. 7. Survivorship of adult Tribolium placed upon a starvation diet at various ages. From Table VII it is evident that there exist significant differences between each two mean values except in the case of groups (a) and (&), which is only db days ( X P. E.). This difference, though statistically not certainly significant, points to a better survivor- ship of 20-day-old adults than newly emerged adults when both are subjected to starvation. The beetles of the two higher age groups all. 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
