. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURES 8, A through 8, D redrawn from Schrader (1941), /. Morphol., 68, with per- mission of the publishers and author. All are of Anisolabis marititna. (A) Normal first spermatocyte metaphase, in side view. (B) Diagram showing the four spindles that arise after precocious separation of the centrioles in two planes. (C) First meiotic metaphase with precociously divided centrosomes. Those at upper pole superimposed on each other and in a plane at right angles to those of lower pole. Only two of four spindles shown. (D) Telo-
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURES 8, A through 8, D redrawn from Schrader (1941), /. Morphol., 68, with per- mission of the publishers and author. All are of Anisolabis marititna. (A) Normal first spermatocyte metaphase, in side view. (B) Diagram showing the four spindles that arise after precocious separation of the centrioles in two planes. (C) First meiotic metaphase with precociously divided centrosomes. Those at upper pole superimposed on each other and in a plane at right angles to those of lower pole. Only two of four spindles shown. (D) Telo- phase of first meiotic division, with precocious centrosomal division. The centrosomes at the lower pole superimposed on each other. Chromosomes in two groups at the lower pole. The Anisolabis material of Schrader therefore shows a type of centriole behavior similar to that described by Johnson (1931) for Ocean thus, except that the pre- cocious separation of the centrioles in the anomalous Anisolabis cells did not give rise (Schrader, p. 130) to the production of continuous fibers (, a spindle) between them. Tn the spermatogenesis of the hemipteran Gelastocoris, as described by Payne. 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
