. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 450 J. W. LYNN AND W. H. CLARK, FIGURE 4. Mature sperm attach to the egg surface base first at fifteen seconds postspawning. The spike is diametrically opposed to the egg surface and filamentous strands from the sperm are associated with the egg investment (arrow). Bar = 5 nm. FIGURE 5. In thick plastic sections stained for light microscopy, the sperm base retains a marked cupped shape. Bar = 5 ^m. FIGURE 6. By fifteen to 30 seconds postspawning, the sperm spike bends close to the base. Bar = 5 Mm. FIGURE 7. In cross se
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 450 J. W. LYNN AND W. H. CLARK, FIGURE 4. Mature sperm attach to the egg surface base first at fifteen seconds postspawning. The spike is diametrically opposed to the egg surface and filamentous strands from the sperm are associated with the egg investment (arrow). Bar = 5 nm. FIGURE 5. In thick plastic sections stained for light microscopy, the sperm base retains a marked cupped shape. Bar = 5 ^m. FIGURE 6. By fifteen to 30 seconds postspawning, the sperm spike bends close to the base. Bar = 5 Mm. FIGURE 7. In cross sections, the sperm base has noticeably flattened during the spike bending. Bar = 5 nm. off of the investment surface (Figs. 9, 10). Filamentous extensions are no longer apparent in the disassociated region of the base (Fig. 10). Any evidence of former attachment in terms of investment scarring is not apparent. By the end of 60 seconds, the spike is entering a breach in the investment (Fig. 11). At this time, the base of the sperm is almost entirely dissociated from 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
