Dominant protozoan’s in Karoon River Water, Ahwaz city, Iran
Abstract
In this descriptive study, we took samples from 3 points of karoon river in Ahwaz city boundaries (upstream- uptake point for water treatment plant, middle and downstream) in two seasons (dry and wet). Samples prepared and examined by optic microscope.
The results showed 6 species of mastigophora and ciliophora. Most prevalent species were Monosiga fusiformis, Bodocaudatus ، Cercomonas Longicauda، Cercomonas Crassicauda، Tetramitus descissus And Stalked Ciliate. The seasonal variation difference was statistically significant. Minimum concentration was in January (less than 1 cell /lit) and maximum was in October (1600 cell/ lit). The average concentration of protozoans was 129.68 cells/ lit.
Protozoans in 3 sampling stations were statistically different, where in 2 and 3 stations Bodocaudatus, Cercomonas Longicauda, Cercomonas Crassicauda, and Tetramitusdescissus were dominant. Identified protozoan species indicate pollution of Karoon River by sewage discharge.
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Iranian Journal of Health, Safety and Environment e-ISSN: :2345-5535 Iran university of Medical sciences, Tehran, Iran