Daphnids

Few studies have been conducted on other invertebrate taxa but pentach-lorophenol exposure has been shown to affect daphnid reproductive capacity and sex steroid hormone metabolism and a high incidence of intersex has been observed in harpacticoid copepods near an Edinburgh sewage outfall. " ... [Pg.11]

Daphnid Daphnia magna) MMTC 24-h EC50 (immobiiization) 90 90 Vighi Caiamari (1985)... [Pg.34]

Daphnid Daphnia magna) MMT(EHMA) 21-day NOEC (reproduction and mortaiity) 0.14 0.05 de Roode de Haan (2004a)... [Pg.34]

Daphnid Daphnia magna) DMTC 48-h EC50 (immobilization) 17 17 Hooftman de Wolf (2003c)... [Pg.35]

Daphnid (Daphnia magna) DBTC 48-h ECso (immobilization) 1.4 1.4 ABC (1990a)... [Pg.36]

Daphnid (Daphnia magna) DBTC 21-day NOEC (survival and reproduction) 0.015 = highest concentration tested 0.015 ABC (1990b)... [Pg.36]

Daphnid Daphnia magna) DOTO 24-h ECso (immobilization) >saturated solution >saturated solution Ciba-Geigy Ltd (1988e)... [Pg.38]

Daphnid Daphnia magna) DOTC 21-day NOEC (survival and growth) 0.4 0.4 Schering AG (1999d)... [Pg.38]

Ward TJ, Kowalski PL, Boeri RL (1995b) Acute toxicity of the water accommodated fraction (WAF) of aikyitin MA to the daphnid, Daphnia magna. Marblehead, MA, T.R. Wilbury Laboratories, Inc. (Study No. 862-MO). [Pg.51]

Dr. G. A. LeBlanc of North Carolina State University is evaluating effects of potentially endocrine-disrupting chemicals, including endosulfan, on steroid hormone biotransformation/elimination processes in daphnids, fish, and mice, and is constructing models of the processes. The work is being funded by the U.S. Department of Agriculture. [Pg.201]

The toxicity of CGA-72662 to fish and daphnids was determined from aquatic laboratory tests. The LC5Q was then compared to the maximum environmental concentration of CGA-72662 expected (from EXAMS) in ponds and lakes. The ratio of LC. /MEC is... [Pg.257]

The evaluation for aquatic toxicity on daphnids and fish is reported in Tables 12 and 13. Bold values indicate that compounds are out of the model applicability domain (ECOSAR) or that the prediction is not reliable. ECOSAR and ToxSuite are able to predict all the selected compounds while T.E.S.T. fails in prediction for the daphnia toxicity of perfluorinated compounds (PFOS and PFOA). Tables 12 and 13 include also a limited number of experimental results provided by the model training dataset (some data are extracted from USEPA Ecotox database). Predicted results are in agreement for five compounds only (2, 3, 5, 13 and 14) for both endpoints while the predictions for the other compounds are highly variable. [Pg.200]

ECOSAR often underestimates values for daphnids and fish. [Pg.201]

Table 4 EC50 (in mg L ) used to calculate PNEC (by dividing EC50 by an assessment factor (AF) of 1,000), for fish, daphnids (Daphnia magna) and algae for some of the most ubiquitous pharmaceuticals detected in environmental waters...

For trivalent chromium and freshwater biota, toxicity was significantly increased in comparatively soft waters this pattern was especially pronounced for daphnids (Table 2.4). Among freshwater teleosts, survival was reduced at comparatively low pH (U.S. Environmental Protection... [Pg.98]

Daphnids, Daphnia ambigua, D. parvula, D. pulex, Reduced productivity 1... [Pg.184]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...