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A taxonomic revision of two dictyostelid species, Polysphondylium pallidum and P. album.


Animals, physiology, cytology, Spores, Protozoan, parasitology, Soil, Geography, isolation & purification, classification, Dictyosteliida, Cell Size

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      To reevaluate two dictyostelid species, namely, Polysphondylium pallidum and P. album, 92 isolates of the P. pallidum complex from their type localities were examined based on mating relationships and morphological characteristics. In the mating tests three heterothallic mating groups were found among the isolates. They also were different morphologically from each other. These results suggested that they belonged to distinct taxa. By comparison of the three mating groups with the type specimens of P. pallidum and P. album, two of them were identified as P. pallidum and P. album. Based on the examined isolates P. pallidum and P. album were redescribed in detail.

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