Effects of Water Quality on Survival and Reproduction of Four Species of Planaria (Turbellaria: Tricladida)
ARMY MEDICAL RESEARCH INST OF INFECTIOUS DISEASES FORT DETRICK MD
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In a series of bioassays, four planarian species - Dugesia dorotocephala Woodworth, Dugesia tigrina Girard, Cura foremanii Girard, Dendrocelopsis vaginatus Hyman were evaluated against six water quality parameters hardness, temperature, salinity, pH, dissolved organics, and dissolved oxygen for effects on species survival and asexual reproduction. No significant P0.05 effects were determined on survival and asexual reproduction of three species exposed to various levels of hardness. Dugesia tigrina was determined to have a significant increase in asexual reproduction with an increase in hardness. Dissolved oxygen was determined to be a critical parameter affecting both survival and reproduction of the species evaluated. Dugesia dorotocephala and D. tigrina were determined to be the most adaptable and tolerant of the species evaluated.
- Medicine and Medical Research