6533b857fe1ef96bd12b3929

RESEARCH PRODUCT

Demographic parameters of Brachionus calyciflorus Pallas (Rotifers) exposed to sublethal endosulfan concentrations

A. Fernández-casalderreyM. D. FerrandoE. Andreu-moliner

subject

Generation timebiologyRate of natural increaseRotiferAquatic ScienceBrachionusbiology.organism_classificationToxicologychemistry.chemical_compoundchemistryBrachionus calyciflorusToxicityEndosulfanEC50

description

The effects of sublethal levels of endosulfan (0, 1, 1.5, 2.5 and 3.3 mg 1−1) on the demography of the rotifer Brachionus calyciorus were studied. Life expectancy at birth (e o), net reproductive rate (Ro), generation time (T) and intrinsic rate of natural increase (r) were significant differentes between blank controls and controls with acetone. The effective endosulfan concentration at which a given parameter value was reduced to 50% of the controls (EC50) was calculated for life expectancy.

https://doi.org/10.1007/bf00006811