. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GROWTH OF TADPOLES AND CROWDING 359 was, at 19 days after hatching, only one-sixth, and at 28 days after hatching only one-twelfth the average weight in cultures of one single individual. Differences of this sort require no elaborate methods for their demonstration. Four other series of the same sort, grown during three separate seasons, confirm both qualitatively and quantitatively the result of Fig. 6. Each series represents two months of care and meas- urement. 2000 1000. FIG. 6. Influence of density of population upon gr
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GROWTH OF TADPOLES AND CROWDING 359 was, at 19 days after hatching, only one-sixth, and at 28 days after hatching only one-twelfth the average weight in cultures of one single individual. Differences of this sort require no elaborate methods for their demonstration. Four other series of the same sort, grown during three separate seasons, confirm both qualitatively and quantitatively the result of Fig. 6. Each series represents two months of care and meas- urement. 2000 1000. FIG. 6. Influence of density of population upon growtli in weight of brood U at 19° C. Each culture was in 500 cc. of water, changed weekly, and fed ad libitum. Numbers indicate the individuals per culture. In the less crowded con- ditions two duplicate cultures were averaged. The effect of volumes of water of varying sizes is illustrated in Fig. 7. In these cultures the proportion of surface to volume of water was nearly constant, so that only the one factor varied. The smallest aqua- rium was so small that practically all the space was occupied by the food supply, and the tadpoles were ultimately killed by fouling of the 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
