. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 7. Drawings of the female reproductive cells of Limacina retrovcrsa (Fleming). A. An oogonium. B. A growing ovocyte with homogeneous cytoplasm. C. A nearly mature ovum with a number of darkly-staining granules in the cytoplasm. growth of the animal that the spermatogonia do not all develop at the same time, but that they follow each other in their maturation. The female cells as a whole evidently develop slower than the male so that the animal generally assumes a protandric condition. The proc- ess of maturation of the
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 7. Drawings of the female reproductive cells of Limacina retrovcrsa (Fleming). A. An oogonium. B. A growing ovocyte with homogeneous cytoplasm. C. A nearly mature ovum with a number of darkly-staining granules in the cytoplasm. growth of the animal that the spermatogonia do not all develop at the same time, but that they follow each other in their maturation. The female cells as a whole evidently develop slower than the male so that the animal generally assumes a protandric condition. The proc- ess of maturation of the female reproductive cells cannot be readily observed in our specimens of Limacina retroversa. When the different ovocytes in the ovotestis are compared it is seen that the growth of the cells is associated with the deposition in the cytoplasm of large granules which stain very dark with haematoxylin. The nucleus, on the other hand, takes stain less and less easily and eventually becomes much lighter as the ovocytes grow in size. A mature ovum measures 50 to 70 micra,. 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
