. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 242 WILLIAM T. BELL TABU-: I Rati- of protein /i/ / miniliiliofi by oorytcs during the 5-day cycle Protein Time interval -lays) (/tg/oocyte) Oocyte protein in- crease per female (Mg) Basal Penultimate Total BF-2 86 8 94 1504 2-3 94 12 106 1690 3-4 160 25 185 2960 4-5 74 21 95 1520 5-BF 43 43 86 1344 tained from oothecae was 225 //.g/V-1, 8870 of which is attributed to vitellogenins A and B (Bell, 1969a), indicating a yolk fluid vitellogenin concentration of 198 /xg//xl. The vitellogenic cycle wras found to be a 5-day
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 242 WILLIAM T. BELL TABU-: I Rati- of protein /i/ / miniliiliofi by oorytcs during the 5-day cycle Protein Time interval -lays) (/tg/oocyte) Oocyte protein in- crease per female (Mg) Basal Penultimate Total BF-2 86 8 94 1504 2-3 94 12 106 1690 3-4 160 25 185 2960 4-5 74 21 95 1520 5-BF 43 43 86 1344 tained from oothecae was 225 //.g/V-1, 8870 of which is attributed to vitellogenins A and B (Bell, 1969a), indicating a yolk fluid vitellogenin concentration of 198 /xg//xl. The vitellogenic cycle wras found to be a 5-day succession in which an ootheca was formed every fifth day. By the time the basal oocytes had completed yolk formation and were involved in chorion deposition, the penultimate oocytes had reached an advanced stage in yolk formation and continued during and after the basal oocytes were ovulated; thus two oocytes in each ovariole were supporting yolk deposition simultaneously (Roth, 1968). This relationship was observed in both the volume (Fig. 2) and the protein content (Fig. 3) of the oocytes. The con- tinuum is not regular, however, -as the amount of protein accumulated by the combined effort of the basal and penultimate oocytes (Table I) differed from one stage in the cycle to another. There was a peak of yolk formation between days 3 and 4, whereas at either end of the cycle the rate was about half that at the BF DAYS FIGURE 4. Total blood protein concentration during the 5-day cycle. Each point is the average of 20 females. Vertical lines are standard 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
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