. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HEAVY METALS AND SPERM MOTILITY 239 tozoa collected from each of two sea urchins is illustrated in Figure 2. Addition of juEq copper speeds the sperm by approximately 10%. In the presence of /*Eq added copper, sperm motility falls to 86 or 66% of control values, decreases to 37 or 58% of control values in /xEq excess copper, to 31 or 36% of control values in 25 /AEq excess copper, and ceases completely in the presence of 50 1601-. ~-2 -3 -4 -5 -6 LOG [ZnCJ2] ADDED TO FSW -7 FIGURE 1. Effect of ZnQ2 on the swimmin
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HEAVY METALS AND SPERM MOTILITY 239 tozoa collected from each of two sea urchins is illustrated in Figure 2. Addition of juEq copper speeds the sperm by approximately 10%. In the presence of /*Eq added copper, sperm motility falls to 86 or 66% of control values, decreases to 37 or 58% of control values in /xEq excess copper, to 31 or 36% of control values in 25 /AEq excess copper, and ceases completely in the presence of 50 1601-. ~-2 -3 -4 -5 -6 LOG [ZnCJ2] ADDED TO FSW -7 FIGURE 1. Effect of ZnQ2 on the swimming speed of Arbacia punctulata spermatozoa. Varying concentrations of ZnCU added to filtered Woods Hole seawater containing 107 ± 10% Arbacia punctulata spermatozoa elicit a biphasic dose-dependent response. Abscissa represents the zinc chloride concentrations added, in log moles per liter seawater/sperm suspensions; ordinate is the swim rate of treated sperm expressed as per cent of the control rate in sea- water. The points and ranges indicate the mean and standard deviations of individual deter- minations made on spermatozoa collected from three individual Arbacia. The incubation varied from 22-23° C on different 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
