Biological responses of Lumbriculus variegatus exposed to fluoranthene-spiked sediment

Archives of Environmental Contamination and Toxicology
P F LandrumC D Rowland

Abstract

Lumbriculus variegatus was used as a bioassay organism to examine the impact of the sediment-associated polycyclic aromatic hydrocarbon (PAH) fluoranthene on behavior, reproduction, and toxicokinetics. The number of worms increased between the beginning and end of the experiment at 59 microg x g(-1) fluoranthene, but at the next higher treatment (108 microg x g(-1)) the number of worms found was lower and not different from the control. Worms exposed to 95 microg x g(-1) also exhibited increased reproduction when fed a yeast-cerophyl-trout chow mixture. On a total biomass basis, only the 95 microg x g(-1) exposure with food exhibited a statistically significant increase over the nonfed control. Evaluation of reproduction at the two highest treatments was compromised by a brief aeration failure 2 days before the end of the experiment. The behavioral responses were followed as changes in biological burial rate (sediment reworking rate) of a 137Cs-labeled marker layer. The biological burial rate increased toward a plateau as the concentration increased from the control (3.9 microg x g(-1) dry weight total PAH) to 355 microg x g(-1) dry weight fluoranthene in sediment. The aeration failure had minimal impact on the determination of...Continue Reading

Citations

Jun 17, 2008·Ecotoxicology and Environmental Safety·Sandra LagauzèreJean-Marc Bonzom
Feb 21, 2013·Environmental Toxicology and Chemistry·Juan DuJing You
Aug 30, 2014·The Science of the Total Environment·Wiebke MeyerChristine Achten
Aug 17, 2016·Environmental Science & Technology·Kevin R RocheAaron I Packman
Jun 19, 2007·Environmental Toxicology and Chemistry·Lance J SchulerMichael J Lydy
Jun 24, 2009·Environmental Science & Technology·Stephan A Van der Heijden, Michiel T O Jonker
Nov 17, 2012·Environmental Science & Technology·Inna NybomJarkko Akkanen
Sep 14, 2010·Environmental Science & Technology·Sarah JosefssonKarin Wiberg

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