. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PUPAL DIAPAUSE IN SARCOPHAGA 15 1971a) ; other flies from the same lot were provided protein. The incidence of diapause in the progeny of the two groups was compared ( without protein, N ; : 136; with protein, N : ISO pupae). The test failed to show a sig- nificant difference in progeny diapause level (Pearson x' =, - - 1, P " ). Influence of on diapause induction Comparison of the sex ratios in groups of S. crass; f>alf>is representing various levels of diapause incidence shows a tend
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PUPAL DIAPAUSE IN SARCOPHAGA 15 1971a) ; other flies from the same lot were provided protein. The incidence of diapause in the progeny of the two groups was compared ( without protein, N ; : 136; with protein, N : ISO pupae). The test failed to show a sig- nificant difference in progeny diapause level (Pearson x' =, - - 1, P " ). Influence of on diapause induction Comparison of the sex ratios in groups of S. crass; f>alf>is representing various levels of diapause incidence shows a tendency for males to enter diapause at a higher rate than females. The sex ratio approaches 1 : 1 for batches representing 0% diapause (51% males, N " 993) and 100% diapause (48% males, N == 761).. 8 10 12 14 16 18 20 HOURS OF LIGHT/DAY 22 24 FIGURE 1. Critical photoperiod at 25° C in samples of wild populations of Sarcophaga bullata from Illinois and Missouri. Each point represents the mean (± S. E.) diapause inci- dence in progeny of 12-14 females (925-1666 pupae). With partial diapause incidence the sex ratios of the diapause and non-diapause fractions deviate significantly from 1:1. In batches representing 90% diapause (25% males, N -- 124). Observations on the other species of Sarcophaga have revealed a similar 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
Size: 1476px × 1693px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
