Ref ID : 3705
Ndu Umeche; The Numbers of Naegleria spp. in Michigan Soils and Litters. Arch.Protistenk 127:127-130, 1983
Reprint
In File
Notes
The numbers of low temperature (23 degrees C) non-pathogenic Naegleria spp. isolated from Michigan soils (Ottokee loamy sand, Fox loam, Miami loam, Rifle peat) and the characteristics of these soils were determined. Cysts and trophozoites per gram of soil and litter in different layers were found to vary. Counts obtained during the months of August and September revealed that more cells were found in soil layers than in litter layers and generally more trophozoites than cysts at this time. The highest number of cells recorded in the litter layers was 6,111 of which 1,524 were cysts, while the lowest number was 159 with 98 cysts. In the soil layers, the highest number of cells recorded was 16,288 of which 2,618 were cysts, while the lowest number was 225 cells with 205 cysts. These organisms appeared to have a brief trophic existence during the warm months and remain predominantly as cysts during most of the cool Michigan months, based on monthly observations of samples.