Premium
Toxicity testing using esterase inhibition as a biomarker in three species of the genus Lecane (Rotifera)
Author(s) -
PérezLegaspi Ignacio Alejandro,
RicoMartínez Roberto,
PinedaRosas Arikitza
Publication year - 2002
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620210413
Subject(s) - esterase , rotifer , biology , cadmium , environmental chemistry , chemistry , zoology , toxicology , ecology , enzyme , biochemistry , organic chemistry
Abstract We have developed an esterase inhibition test to investigate the effects of 10 toxicants, including six metals (cadmium, chromium, copper, lead, mercuric chloride, and titanium) and four organics (benzene, ethyl acetate, toluene, and vinyl acetate) in three species of the benthic rotifer genus Lecane (L. hamata, L. luna , and L. quadridentata ). Metals affect esterase inhibition by an average value of 4,957‐fold greater than the four organics tested for the three rotifer species. Most of the EC50 (effect concentration where a 50% reduction in esterase activity is observed) values correspond to environmentally realistic concentrations. Comparisons of acute‐to‐chronic ratios among these three species showed that in two species, L. luna and L. quadridentata , esterase inhibition is an outstanding biomarker for most of the toxicants tested.