. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 261. FIGURE 17. Cyst morphology as a function of salt concentration. A. and D. per cent. B. and E. per cent. C. and F. per cent. A., B., and C. Bar = 10 ^m. D., E., and F. Bar = 5 /urn. mastigote stage had been seen, P. jugosus had been introduced by Page (1967) into the literature as Vahlkampfia jugosus. These amoebae have a closed nuclear division pattern (promitosis), eruptive monopodial pseudopods, and temporary amoebom- astigote stages. They belong to the family Vahlkampfidae (Page, 1976). D
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 261. FIGURE 17. Cyst morphology as a function of salt concentration. A. and D. per cent. B. and E. per cent. C. and F. per cent. A., B., and C. Bar = 10 ^m. D., E., and F. Bar = 5 /urn. mastigote stage had been seen, P. jugosus had been introduced by Page (1967) into the literature as Vahlkampfia jugosus. These amoebae have a closed nuclear division pattern (promitosis), eruptive monopodial pseudopods, and temporary amoebom- astigote stages. They belong to the family Vahlkampfidae (Page, 1976). Different geographical strains have been isolated from Scottish soil samples, fresh water lakes and streams in England and in the United States (Darbyshire et al, 1976), and from a Czech swimming pool (Cerva, 1971). All of the strains originally identified as Vahlkampfia jugosus also transformed into mastigotes and thus were reclassified by Page (1976) as Paratetramitus jugosus. We believe that the differences in growth rate, salt and heat tolerance, isoenzyme pattern, fluorescence emission maxima, and extraordinary desiccation resistance constitute enough difference to recognize this protist as a new strain, Paratetramitus jugosus baja californiensis. On the coastal evaporite flat of Laguna Figueroa the protist survives but does not grow during normal periods of cyanobacterial organic mat deposition and ex- Fluorescence of mature cysts TABLE II Strain Maxima Excitation (nm) Emission (nm) Paratetramitus jugosos BC Paratetramitus jugosus ATCC 488 488 611 592. 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, Alfre
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