. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PARA TETRAMITUS 259. FIGURE 15. Fecal pellets. A. Amoeba containing fecal pellet (Bar = 1 f/m). B. Clumps of fecal pellets (0 (Bar = 1 Mm)- C. TEM thin section of fecal pellet with disintegrating bacteria (b). s = spore. Bar = Temperature The Baja California strain off. jugosus grew well between 20 and 36°C. It did not grow at 37°C. It survived temperatures up to 56°C for 10 minutes, but did not survive heat treatment for 10 minutes at 59°C. The ATCC P. jugosus also survived temperatures up to 56°C for ten minutes. Howev
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PARA TETRAMITUS 259. FIGURE 15. Fecal pellets. A. Amoeba containing fecal pellet (Bar = 1 f/m). B. Clumps of fecal pellets (0 (Bar = 1 Mm)- C. TEM thin section of fecal pellet with disintegrating bacteria (b). s = spore. Bar = Temperature The Baja California strain off. jugosus grew well between 20 and 36°C. It did not grow at 37°C. It survived temperatures up to 56°C for 10 minutes, but did not survive heat treatment for 10 minutes at 59°C. The ATCC P. jugosus also survived temperatures up to 56°C for ten minutes. However, it did not grow when incubated at 36°C, but grew well at 30°C. No temperatures were tested between these two points. Fluorescence Yellow-green fluorescence emission from vahlkampfids is unreported. Yet in our studies of Baja California microbial communities we have seen this phenomenon consistently not only in small amoebic cysts but in larger unidentified acantham- oebids. From the fluorescence data in Table II it can be seen that the two strains of P. jugosus differ from one another in their emissive properties. Little is known about the chemical basis or possible significance of this fluorescence, but the pos- sibility of its use as a tool in diagnostics is obvious. Fluorescence in these amoebomastigotes was strongly correlated with life cycle stage. Amoebae do not fluoresce, yet the small rounded bodies had faint fluorescence. The larger round bodies usually contained 2-6 strongly fluorescing bodies that measured from 1-3 pm (Color plate VI, VII). Mature cyst walls fluoresced most strongly; the cysts themselves fluoresced more and more strongly as they desiccated. Although Page (1967) did not report fluorescence data he did describe cytoplasmic granules in Vahlkampfia ornata. Dense spherules ( to 2 /urn in diameter) were. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
