BLUE-GREEN ALGAE FROM BERMUDA WATERS: ECOLOGICALLY SELECTED VARIATIONS OF A SINGLE SPECIES.
Three strains were isolated from Bermuda waters as unialgal cultures. Although identical in cell shape, cell size, and general growth features, marked differences in pigmentation, filament length, and sheath thickness were noted. These differences are explained as being due to differences in physical conditions of the areas of isolation of the 3 strains. It is concluded that the 3 strains are ecologically selected mutants of the single species, Schizothrix calcicola.
Institute of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada.
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