Alternative Diatom Strains for Growth Inhibition Tests (OECD Test Guideline 201)

抄録

UTEX 664 [Navicula pelliculosa (Kütz.) Hilse], widely used for algal growth inhibition tests, is no longer available in algal culture collections. Two strains (UTEX 661=NIES-4280 and UTEX B 673=NIES-4281) listed as the same species with the same isolator are candidate alternatives to UTEX 664. We re-evaluated the two strains by scanning electron microscopy and a molecular phylogenetic analysis. We identified NIES-4280 as a new taxon, Mayamaea pseudoterrestris sp. nov. and identified NIES-4281 as M. terrestris. We also report Mayamaea permitis from freshwater rivers in Japan.