. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. THE SEX RATIO IN PEROMYSCUS. 153 1I) February-April + (2) May-July ± 5-36 (3) August-October ± 7-77 (4) November-January + The greatest difference between two of these ratios is that be- tween the third and fourth periods This difference is — 11-09. 145 140 135 130 125 120 115 110 105 100 95 90 B5 80 75 137. 553 JAN FEE MAR APR MAY JUN JUL AUG SEP OCT NOV DEC FIG. I. The sex ratio of Pcrotiiyscits for each month of the year com- puted for the data from 1922 to 1926. The figures alo
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. THE SEX RATIO IN PEROMYSCUS. 153 1I) February-April + (2) May-July ± 5-36 (3) August-October ± 7-77 (4) November-January + The greatest difference between two of these ratios is that be- tween the third and fourth periods This difference is — 11-09. 145 140 135 130 125 120 115 110 105 100 95 90 B5 80 75 137. 553 JAN FEE MAR APR MAY JUN JUL AUG SEP OCT NOV DEC FIG. I. The sex ratio of Pcrotiiyscits for each month of the year com- puted for the data from 1922 to 1926. The figures along the graphs denote the number of individuals born during each month of the year. Grouping the same data according to the seasons of the year, as employed by King and some others, we get the following sex ratios: Spring + (March-May) Summer + (June-August) Autumn + ( September-November) Winter + (December-February) Here the greatest difference is between summer and autumn, being in this case ± Inasmuch as our figures are small we make no attempt to attach any particular significance. 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
