. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 326 I.\.\IKS S. ML'RPHY £ I5r O) CL CT- 10 O) _o E 13 C O). 1 1 None M O o q 6 CM § o CM g c\j c\j o Concentration of calcium pantothenate,mg/liter FidruK 1. Average number of young per clutch in various concentrations of calcium pantothenate (summary of over 400 clutches). caused a very striking increase in the number of viable young. Raising the amount of vitamin B1L. 10 or 100 times did not alter the results but leaving it out of the medium produced a sharp reduction in litespan and in the number of young pro- duced. Calc
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 326 I.\.\IKS S. ML'RPHY £ I5r O) CL CT- 10 O) _o E 13 C O). 1 1 None M O o q 6 CM § o CM g c\j c\j o Concentration of calcium pantothenate,mg/liter FidruK 1. Average number of young per clutch in various concentrations of calcium pantothenate (summary of over 400 clutches). caused a very striking increase in the number of viable young. Raising the amount of vitamin B1L. 10 or 100 times did not alter the results but leaving it out of the medium produced a sharp reduction in litespan and in the number of young pro- duced. Calcium pantothenate on the other hand had a definite optimal concentration for production of young (see Fig. 1 ), but its presence or absence had no effect on the lifespan which averaged 41 davs from the da}' embryological development began. The animals averaged twelve clutches of eggs apiece regardless of the presence or absence of added pantothenate. .-llf/ac requirement A final experiment in this series was done to find out if it was necessary to add both algae to these cultures. Washed eggs of I), were started in basic TABLE VII Effect o/Chlamydornonas mid Scenedesmus on 1). pulex in basic nicdiuin Xo. females Average number of young Clutch 1 Clutch 2 Clutch .? Clilaniydomonas alone Both al^.u- 15 15 15 (1 14 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
