. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SPERM-EGG INTERACTION IN SHRIMP 449. A FIGURE 1. A mature Macrobrachhim rosenbergii egg is approximately mm in diameter and has a homogenous cytoplasm when viewed with phase microscopy. Bar = 200 ^m. FIGURE 2. The egg is covered by a bilayered investment and consists of a thin outer layer (arrow) which appears porous in scanning electron microscopy and a much thicker spongy layer (S) which remains closely opposed to the egg before fertilization. Bar = 5 ^m. FIGURE 3. The external surface of the egg investment has no diff
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SPERM-EGG INTERACTION IN SHRIMP 449. A FIGURE 1. A mature Macrobrachhim rosenbergii egg is approximately mm in diameter and has a homogenous cytoplasm when viewed with phase microscopy. Bar = 200 ^m. FIGURE 2. The egg is covered by a bilayered investment and consists of a thin outer layer (arrow) which appears porous in scanning electron microscopy and a much thicker spongy layer (S) which remains closely opposed to the egg before fertilization. Bar = 5 ^m. FIGURE 3. The external surface of the egg investment has no differentiated area such as a micropyle, and following insemination, only 2-5 sperm (arrows) attach to the surface. Bar = 100 A breach in the outermost layer of the investment around the tip of the spike begins to appear by 45 seconds (Fig. 9). At this time, the base of the sperm partially dissociates from the egg investment and the edge distal to the point of contact lifts. 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
