. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 100 MARY BETH SAFFO aries—individually about 3-6 /urn in width, typically about 40-60 ^m in length (Fig. 8). Unlike other filament forms, the irregular filaments are found more often on the inner wall of the renal sac, rather than free in the renal sac lumen. They are sometimes found in network-like arrays (Fig. 9). To date, such filaments have been found only in M. manhattensis and B. pilularis. 4. Posteriorly biflagellate swarmer cells ("zoospores"): the cell is about 3-5 ^m in length, with one or two refractile
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 100 MARY BETH SAFFO aries—individually about 3-6 /urn in width, typically about 40-60 ^m in length (Fig. 8). Unlike other filament forms, the irregular filaments are found more often on the inner wall of the renal sac, rather than free in the renal sac lumen. They are sometimes found in network-like arrays (Fig. 9). To date, such filaments have been found only in M. manhattensis and B. pilularis. 4. Posteriorly biflagellate swarmer cells ("zoospores"): the cell is about 3-5 ^m in length, with one or two refractile globules in the center of the cell. The flagella are equal in length, about 12-15 /mi long (Fig. 1). In some species (, M. citrina}, zoospores occasionally possess a prominent apical projection (Fig. 10). 5. Rosette-shaped "sporangia": usually about 20 ^m diameter (Fig. 11), though sometimes larger (an occasional occurrence in M. complanata and M. citrina Fig. 12). Biflagellate zoospores (above) are discharged from these. Before zoospores discharge, the sporangium is surrounded by a wall, which is apparently dissolved or torn apart during zoospore discharge. No discharge pore has been detected in the sporangium in most host species, although in M. citrina, sporangia are often surrounded by a heavy wall with two or three tunnel-like openings (Fig. 13); some-. FIGURES 13-16. (13) Sporangia surrounded by heavy tunneled wall (arrow), from M. citrina. Nomarski optics. Bar = 20 Mm. (14) Sporangial wall connected to filament (arrow), from M. citrina. Phase contrast. Bar = 15 ^m. (15) "Baskets" from M. manhattensis. Nomarski optics. Bar = 10 ^m. (16) "Doughnuf'-shaped cells from M. manhattensis. Phase contrast. Bar = 10 ^ 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 Biolog
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
