. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BF 4 DAYS BF FIGURE 6. Blood volume during the 5-day cycle. Each point is the average of 10 females. Vertical lines are standard deviations. to 157 jA at the time of ootheca formation. A better indication of the correlation between yolk formation and blood protein content was obtained by multiplying the protein concentration (mg//xl) by the blood volume (/A!) to obtain an estimate of the total amount of protein in the blood (Fig. 7). The results indicate that changes in blood volume do not explain the blood protein concentra
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BF 4 DAYS BF FIGURE 6. Blood volume during the 5-day cycle. Each point is the average of 10 females. Vertical lines are standard deviations. to 157 jA at the time of ootheca formation. A better indication of the correlation between yolk formation and blood protein content was obtained by multiplying the protein concentration (mg//xl) by the blood volume (/A!) to obtain an estimate of the total amount of protein in the blood (Fig. 7). The results indicate that changes in blood volume do not explain the blood protein concentration changes shown in Figure 4, but, on the contrary, amplify the drop in protein correlated with ootheca formation. The changes in the total blood protein must be due to changes in the relative concentration of non-vitellogenic blood proteins which do not have homologous antibodies to the yolk proteins in the antiserum utilized in this study. That non-vitellogenic blood proteins undergo alterations in relative concentration in female Periplaneta is also suggested by electrophoretic analyses of blood proteins during the vitellogenic cycle (Nielsen and Mills, 1968; Adiyodi and Nayar, 1967). 14 Q ~ O °> 05 DO Z _i HJ 2o o a: i- n 12 1O 8 \. BF 4 DAYS BF FIGURE 7. Estimation of blood protein content during the 5-day cycle. Total protein is designated as O, vitellogenin A and B combined as •.. 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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