Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Effects of an organophosphate on Daphnia magna at suborganismal and organismal levels: implications for population dynamics
Autor Duquesne, S.;
Journal / Serie Ecotoxicology and Environmental Safety
Erscheinungsjahr 2006
Department OEKOTOX;
Band/Volume 65
Heft 2
Sprache englisch;
Keywords sensitivity; recovery; effect propagation; Daphnia; organophosphate; endpoint; threshold
Abstract The effects and recovery of 24 h pulse exposure to paraoxon-methyl on Daphnia magna were recorded for various endpoints to study the propagation of effects through various biological levels of organization. Above a threshold concentration (2.2 mu g L-1), all selected endpoints were affected. Thus, effects at the suborganismal level (e.g., the biomarker response: transient inhibition of cholinesterase (ChE) activity) were accompanied by effects at the organismal (survival, reduction in reproductive performance, decrease in body size) and population (reduced population growth rate) levels. At intermediate and sublethal concentrations, exposure induced a transient ChE inhibition that was also accompanied by effects at the organismal level and that exerted long-term effects on population dynamics. At lower concentrations, although ChE activity was affected, there was no propagation of effects to higher biological levels. This study shows that effects of pulse exposure to organophosphates propagate from the suborganismal level toward the population level and demonstrates the significance of transient ChE inhibition on population dynamics.
ID 2589
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=2589
Duquesne, S. (2006):
Effects of an organophosphate on Daphnia magna at suborganismal and organismal levels: implications for population dynamics
Ecotox. Environ. Safe. 65 (2), 145 - 150