. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NUTRITIONAL REQUIREMENTS OF TRIBOLIUM 213 of 24 days of the flour-fed group ( ± days) is ± days ( X P. E.). The sex difference, though not a signifi- cant one in the case of the starved forms, indicates that the males on the average survived slightly longer than the females. The opposite is true for the flour-fed group, , the females showed a higher mean number of days of life at the end of 24 days than the males. The latter difference amounts to ± days ( X P. E.). Survivorshi
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NUTRITIONAL REQUIREMENTS OF TRIBOLIUM 213 of 24 days of the flour-fed group ( ± days) is ± days ( X P. E.). The sex difference, though not a signifi- cant one in the case of the starved forms, indicates that the males on the average survived slightly longer than the females. The opposite is true for the flour-fed group, , the females showed a higher mean number of days of life at the end of 24 days than the males. The latter difference amounts to ± days ( X P. E.). Survivorship Curves for Tribolium Both $•>«• Tog«th«r. 12 M AGE IN DAYS FIG. 1. Survivorship curves for the flour-fed and starved adults of Tribolium, taken as pupae from a general stock culture. Flour-fed: jV = 232; observed 24 days. Starved: N = 200; observed entire life. Table II is the ungraduated life table for these two groups of or- ganisms. The four columns under each sex heading show: (1) the absolute number of beetles living at the beginning of each day of age and therefore exposed to the risk of dying during that day; (2) the number of deaths actually occurring during each day of age; (3) death. 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
