. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. REPRODUCTIVE CYCLE IN BYRSOTRIA 453 reported that in their colonies the mated females oviposited between days 26 and 41 (average of ). This apparent reduction in the period required for oocyte maturation in insects cultured over a long period of time has also been observed in Schistocerca yrcgaria (L. Hill, University of Sheffield, personal communication). Female B. fitinigata are normally receptive to courting males between days 10 and 30 after emergence. In females which fail to mate, the oocytes often fail to develop
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. REPRODUCTIVE CYCLE IN BYRSOTRIA 453 reported that in their colonies the mated females oviposited between days 26 and 41 (average of ). This apparent reduction in the period required for oocyte maturation in insects cultured over a long period of time has also been observed in Schistocerca yrcgaria (L. Hill, University of Sheffield, personal communication). Female B. fitinigata are normally receptive to courting males between days 10 and 30 after emergence. In females which fail to mate, the oocytes often fail to develop or may be resorbed after partial development; moreover, nearly all virgins (including those which do oviposit) lack the synchronous oocyte growth observed in mated females. Virgin females which oviposit do so slightly later than mated females (Roth and Stay, 1962). 2. Vitellogenin secretion The blood of females on day 4 or 5 after emergence contains slight, but un- measurable quantities of vitellogenin (less than relative to the yolk fluid standard), suggesting that these yolk precursors are present, but only in trace amounts. Significant levels of both vitellogenins appear in the blood of most females on day 7 or 8. Antigen B is detected about 24 hours prior to the appear- ance of antigen A, and throughout the cycle antigen B occurs in higher concentra-. 12 DAYS 16 AFTER 20 24 EMERGENCE 28 30 FIGURE 5. Changes in blood vitellogenin concentration during the first preoviposition period. Vertical lines are standard deviations. Each point represents an average of 10 to 15 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 Ri
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
