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Effects of deltamethrin and endosulfan on the population growth of Brachionus calyciflorus at different algal (Scenedesmus obliquus) densities

100%

Xu X.-P., Xi Y.-L., Li J.-Y.

Polish Journal of Environmental Studies

2019

tom 28

nr 1

The chronic effects of deltamethrin and endosulfan on non-target organisms have been investigated several times. However, most of these studies were only performed under certain environmental conditions and ignored the effects of food density. In the present study, the effects of deltamethrin (0.3, 0.6, 1.2, and 2.4 mg/L) and endosulfan (0.27, 0.54, 1.08, and 2.16 mg/L) on the population growth of the rotifer Brachionus calyciflorus were investigated at two densities of Scenedesmus obliquus (1.0×10⁶ and 3.0×10⁶ cells/mL). Compared with the blank control, high levels of deltamethrin and endosulfan significantly decreased the population growth rate and the maximum population density of B. calyciflorus, suggesting that these two chemicals are toxic to rotifers. In comparison to high algal density, the toxic effects of 2.4 mg/L deltamethrin and 2.16 mg/L endosulfan on rotifers were much more obvious at low algal density. The present results show the important role of algal density on influencing the toxicities of deltamethrin and endosulfan to rotifers.

Effects of DDT and dicofol on life table demography of the freshwater rotifer Brachionus calyciflorus Pallas

100%

Xu X.-P., Xi Y.-L., Wang X.-M.

Polish Journal of Environmental Studies

2020

tom 29

nr 2

Ograniczanie wyników

2 Polish Journal of Environmental Studies

2 Xi Y.-L.

2 Xu X.-P.

1 Li J.-Y.

1 Wang X.-M.

1 2020

1 2019

Wyniki wyszukiwania

Effects of deltamethrin and endosulfan on the population growth of Brachionus calyciflorus at different algal (Scenedesmus obliquus) densities

Effects of DDT and dicofol on life table demography of the freshwater rotifer Brachionus calyciflorus Pallas