PMID: 7536432Dec 1, 1994Paper

An evaluation of four types of freshwater model ecosystem for assessing the hazard of pesticides

Human & Experimental Toxicology
P LeeuwanghK Kersting

Abstract

Experimental results are reported on four types of freshwater model ecosystem after administration of a single dose of chlorpyrifos. The fate, and primary and secondary effects of chlorpyrifos were compared between the model ecosystems, and were evaluated in the light of the predictive value of the current ecotoxicological hazard assessment procedure for pesticides. 'Slootbox', a fate model used in the ecotoxicological risk assessment of pesticides in the Netherlands, overestimated chlorpyrifos concentrations. The primary effects of chlorpyrifos can be predicted accurately on the basis of single species laboratory toxicity data. The population effects observed in the microecosystems, microcosms, and mesocosms were consistent between all experiments and with the single species tests. Community metabolism, as a functional endpoint, was less sensitive than the structural parameters measured. Secondary effects, both for structural and functional endpoints, varied between the micro- and mesocosm experiments. At the present 'state of the art' in ecotoxicology, no a priori prediction of secondary effects in natural ecosystems will generally be possible. 0.1 times the lowest acute L(E)C50 for chlorpyrifos, as measured in the current ec...Continue Reading

Citations

Nov 25, 2003·The Science of the Total Environment·John W FleegerRoger M Nisbet
May 12, 2007·Archives of Environmental Contamination and Toxicology·M A Daam, P J Van den Brink
Apr 28, 2010·Archives of Environmental Contamination and Toxicology·Harry BoonstraPaul J van den Brink
Jul 17, 2007·Ecotoxicology and Environmental Safety·Patricia López-MancisidorJosé V Tarazona
Oct 7, 2015·Integrated Environmental Assessment and Management·Andreu RicoTheo Cm Brock
Jun 30, 2019·Journal of Pesticide Science·Mitsugu Miyamoto, Takuo Fujisawa

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