. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 174 SISTER MARIE THERESE DIMOND room temperature. Nevertheless, somewhat higher cells, larger follicles, and more mitotic figures appear in the experimentals of Series III kept at room temperature (Figs. 5, 6, 7). Growth of the developing fish was generally slowed dowTn in the cold (Tables II and III), but not affected to any appreciable extent by either of the goitrogens. Exceptions to this, however, were specimens 9C and 10P, both of which increased in total length from 50 to 63 mm. during the cold-treatment. Activity was
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 174 SISTER MARIE THERESE DIMOND room temperature. Nevertheless, somewhat higher cells, larger follicles, and more mitotic figures appear in the experimentals of Series III kept at room temperature (Figs. 5, 6, 7). Growth of the developing fish was generally slowed dowTn in the cold (Tables II and III), but not affected to any appreciable extent by either of the goitrogens. Exceptions to this, however, were specimens 9C and 10P, both of which increased in total length from 50 to 63 mm. during the cold-treatment. Activity was also. FIGURE 1. Specimen 18C, 54 mm., kept at 8° C. for 21 days, at the time of exposure to I131. Notice the large yolk sac and the functional external gills (G). FIGURE 2. Specimen 15C, 80 mm., kept at room temperature. Notice a small yolk sac, the absence of external gills and the beginning of pigmentation. FIGURE 3. Specimen 3P, 98 mm., kept in KQCh at room temperature. It is probably a hatchling. FIGURE 4. Ventral view of anterior region of specimen 3P. Notice the very small remnant of the yolk sac (Y). diminished at a low temperature, the fish remaining very quiet as compared to those at room temperature, but there was no evidence of goitrogen influence on behavior. In view of the size variations in the specimens, the I131 whole-body counts are probably not significantly different for the control and experimental animals kept at 8° C. In the case of those held at room temperature, however, an obvious pattern is indicated, for in the three sets (omitting specimen 3P, which was at least 10 mm. longer than the others and probably a hatchling at the time), 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,
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