Environment and Climate Change Canada

The toxicity of pharmaceuticals finasteride (FIN) and melengestrol acetate (MGA) was assessed in chronic (42 days) sediment tests with the mayfly Hexagenia spp. Two tests were completed for each compound. Survival and growth were assessed at the end of each test.

The toxicity and modes of action of prioritized flame retardants were evaluated in aquatic organisms. The effects of the organophosphorous-containing flame retardant tris (2-butoxyethyl) phosphate (TBOEP) were measured in Daphnia magna after chronic (21-d) and multigenerational exposure (3...

Acute and chronic toxicity and modes of action of benzotriazoles (BZTs) and benzotriazoles UV-stabilizers (BZT-UVs) were evaluated in freshwater invertebrates, algae, and fish. Gene transcription, life history (viability, growth, reproduction), and protein activities were measured after short and...

The toxicity of pharmaceuticals finasteride (FIN) and melengestrol acetate (MGA) was assessed in chronic (42 days) sediment tests with the amphipod Hyalella azteca. Two tests were completed for each compound. Survival, growth, reproduction and sex ratio were assessed at the end of each test.

The toxicity of pharmaceuticals finasteride (FIN) and melengestrol acetate (MGA) was assessed in freshwater mussels, including an acute (48 h) aqueous tests with glochidia from Lampsilis siliquoidea, a sub-chronic (14 days) sediment test with gravid female Lampsilis fasciola, and chronic (21 and...

Categorization was required by the Canadian Environmental Protection Act, 1999 (CEPA 1999) and is a first step to finding out which of these chemical substances require further attention in the form of assessment, research and/or measures to control their use or release. This task was completed...