. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. POINT, 53-54 15- o o 10- Cj < o o _I Mi 0- S. FRANCISCANUS HOPKINS MARINE STATION, 53-54 FREQUENCY. 0 N D J M M J J FIGURE 2. Reproductive cycles of £. purpuratus and of 6". jranciscanus. The bands in the top chart represent approximately 95 per cent confidence limits about the sample means; thus high significance of the differences between 1952-53 and 1953-54 means is clearly indicated. A similar band is drawn in the bottom chart to show the degree of significance of the seasonal variations in 5". jranciscanus.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. POINT, 53-54 15- o o 10- Cj < o o _I Mi 0- S. FRANCISCANUS HOPKINS MARINE STATION, 53-54 FREQUENCY. 0 N D J M M J J FIGURE 2. Reproductive cycles of £. purpuratus and of 6". jranciscanus. The bands in the top chart represent approximately 95 per cent confidence limits about the sample means; thus high significance of the differences between 1952-53 and 1953-54 means is clearly indicated. A similar band is drawn in the bottom chart to show the degree of significance of the seasonal variations in 5". jranciscanus. other 12 being fully as gravid as the animals at the peak periods. All things con- sidered, it therefore seems more reasonable to assume a single annual breeding cycle for the species with random variations, than a consistent double or multiple cycle. The most striking difference between the 1952-53 and the 1953-54 cycles is the much higher gonad indices for the latter year. The gonads reached almost. 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
