Open Government Portal
Found 10 records similar to Toxicity of the pharmaceuticals finasteride and melengestrol acetate to the mayfly Hexagenia spp.
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 28 days) sediment tests with juvenile L. siliquoidea. Glochidia viability was assessed in the 48 hour test; behaviour and glochidia viability were assessed in the 14 day test; and survival and burial was assessed in the 21 and 28 day tests.
The toxicity of pharmaceuticals finasteride (FIN) and melengestrol acetate (MGA) was assessed in freshwater mussels, including acute (48 h) aqueous tests with glochidia from Lampsilis siliquoidea, a sub-chronic (14 days) sediment test with gravid Lampsilis fasciola, chronic (28 days) sediment tests with juvenile L. siliquoidea, and in chronic (42 days) sediment tests with the amphipod Hyalella azteca and the mayfly Hexagenia spp. Testing with mussels assessed survival (glochidia, juvenile mussels), burial ability (juvenile mussels), and filtering and luring behaviour, and viability of brooding glochidia (gravid mussels). Testing with amphipods assessed survival, growth, reproduction and sex ratio. Testing with mayflies assessed survival and growth.
Neonicotinoid insecticides are environmentally persistent and highly water-soluble, and thus are prone to leaching into surface waters where they may negatively affect non-target aquatic insects. Most of the research to date has focused on imidacloprid, and few data are available regarding the effects of other neonicotinoids or their proposed replacements (butenolide insecticides). The objective of this study was to assess the toxicity of six neonicotinoids (imidacloprid, thiamethoxam, acetamiprid, clothianidin, thiacloprid, and dinotefuran) and one butenolide (flupyradifurone) to Hexagenia spp. (mayfly larvae).
The dataset contains the results of a study examining the use of different flow-rate hood fans in reducing air pollution exposure during and after cooking. Tests were carried out in the Canadian Centre for Housing Technology's twin research houses, in Ottawa, Ontario. The same cooking protocol was conducted 60 times on a gas stove, testing 6 different flow rates on three different over-the-range exhaust fans, while continuously measuring ultrafine particles (UFP), Fine Particulate Matter (PM2.5), Nitrogen dioxide (NO2), and Nitrogen monoxide (NO). The fan was operated during cooking for all tests and then either turned off or left on after cooking for the duration of the three hour test.
Radon is a radioactive gas that comes from uranium in the ground that can get into your home undetected. You can’t see it, smell it or taste it. All homes have some level of radon. The question is how much and the only way to know is to test.
Get a list of COVID-19 assessment centres. Before you go, you should check if: * The centre is open * They have drive-through or walk-in testing * They will test small children or babies * You need to make an appointment * You need to speak to a staff member about your condition (prescreening) All assessment centres will test you if you would like to be tested. Call the assessment centre or your local public health unit if you have questions. You do not need a health (OHIP) card for a test.
Health Canada carries out testing and research in its investigation of chemical, flammability, mechanical and electrical hazards of consumer products. We also develop and share test methods with industry and private laboratories.
Diagnosing and how we test, testing importance and contact tracing, increasing testing supply, test accuracy, testing for travellers, national overview of tests performed, roles and responsibilities, authorized testing devices, testing devices under review, access to and types of testing devices, testing and screening expert advisory panel, indutry advisory roundtable, and rapid tests for workplace screening.
Testing for the virus, testing accuracy depends on when you get tested, and testing for antibodies.