Diurnal temperature fluctuations affect ectothermic species more than endothermic taxa. We tested the effect of three fixed temperatures (20, 25 and 30 °C) and a 24 h variable (20-30 °C) on the population growth and fatty acid profiles of the common rotifer Brachionus calyciflorus. Depending on the temperature treatment, the peak population abundances of B.
View Article and Find Full Text PDFJ Environ Sci Health A Tox Hazard Subst Environ Eng
January 2020
Cladocerans are constantly exposed to humic substances in nature, yet the effects of these substances on their survival and reproduction are not well known. Here, the effects of humic substances (20 and 40 mg L) (HS) on the life history variables of three common cladocerans, , , and were evaluated. The results showed that the effect of humic substances on the tested cladocerans is species-specific, affecting either survival, reproduction or both.
View Article and Find Full Text PDFIn this study, we quantified intergenerational, demographic variability of subjected to cadmium stress. Exposure of to cadmium (0.2, 0.
View Article and Find Full Text PDFDemographic responses and fatty acid profiles of Moina macrocopa were quantified under different temperature regimes (20°C, 25°C and 30°C and diurnally variable 20-30°C) and at fixed ration (10.65µgDWml(-1)) of Chlorella. Highest constant temperature (30°C) reduced the density of M.
View Article and Find Full Text PDFWe quantified the combined effects of three food levels (0.01 x 10(6), 0.1 x 10(6) and 1.
View Article and Find Full Text PDFCohort life table experiments were conducted on M. macrocopa using copper at three nominal concentrations (as CuSO(4), 0.1, 0.
View Article and Find Full Text PDFWe studied the demographic responses of Ceriodaphnia dubia exposed to copper at 3 different levels (0.1, 0.2 and 0.
View Article and Find Full Text PDFJ Environ Sci Health A Tox Hazard Subst Environ Eng
August 2007
In this work, we evaluated the combined effects of heavy metal concentration (CuSO(4) and CdCl(2) separately, at 0.1, 0.2 and 0.
View Article and Find Full Text PDFJ Environ Sci Health A Tox Hazard Subst Environ Eng
October 2006
Competition among zooplankton is a natural phenomenon and often cladocerans are competitively superior to rotifers. However, anthropogenic factors including the release of industrial effluents, may influence this interaction. In this study, we evaluated the effect of cadmium (0.
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