. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. STANLEY D. BECK 100 90 Z 80 LJ (J £ 70 a W 60 D a I" 40 30. 12 16 20 PHOTOPHASE (hr) 24 28 32 FIGURE 4. Effect of photophase duration on the incidence of diapause among European corn borer larvae reared under scotophases of 10, 12, or 14 hours. diapause incidence was greater than 9Qc/c. The long axis of the ellipse lies along the 12-hour scotophase coordinate, and the widest part of the response zone falls between the 11- to 13-hour photophase and 10- to 14-hour scotophase coordinates. These results, combined with those
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. STANLEY D. BECK 100 90 Z 80 LJ (J £ 70 a W 60 D a I" 40 30. 12 16 20 PHOTOPHASE (hr) 24 28 32 FIGURE 4. Effect of photophase duration on the incidence of diapause among European corn borer larvae reared under scotophases of 10, 12, or 14 hours. diapause incidence was greater than 9Qc/c. The long axis of the ellipse lies along the 12-hour scotophase coordinate, and the widest part of the response zone falls between the 11- to 13-hour photophase and 10- to 14-hour scotophase coordinates. These results, combined with those shown in Figures 3 and 4, suggest that diapause is most efficiently induced by a 24-hour photoperiod containing a 12-hour scotophase. The characteristics of photoperiods inducing a high incidence of diapause in the 20 90 PER CENT DIAPAUSE O \ O O \ O ~ is LJ a O — © (O ©. 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
