. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. ANCHOVIA MITCHILLI. Fig. 25.—Egg with blastoderm of 2 cells, lateral view. X 60. Fig. 26.—Egg with blastoderm of 4 cells, surface view. X 60. ring is fully differentiated the blastoderm begins to grow around the yolk more rapidly than in the earlier stages. The posterior pole of the blastoderm, however, does not remain at a relatively fixed point, as is the case in many teleostean eggs, but recedes as the anterior pole advances. As the blastoderm grows around the yolk, therefore, its cen
. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. ANCHOVIA MITCHILLI. Fig. 25.—Egg with blastoderm of 2 cells, lateral view. X 60. Fig. 26.—Egg with blastoderm of 4 cells, surface view. X 60. ring is fully differentiated the blastoderm begins to grow around the yolk more rapidly than in the earlier stages. The posterior pole of the blastoderm, however, does not remain at a relatively fixed point, as is the case in many teleostean eggs, but recedes as the anterior pole advances. As the blastoderm grows around the yolk, therefore, its center remains at one pole of the major axis of the egg. The blastopore finally closes at the opposite pole (fig. 34, bl). When the embryo is fully differentiated, therefore, it lies approximately parallel with the major axis of the egg (fig. 35). ph-. 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 United States Fish Commission. Washington, The Commission, Govt. Print. Off
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