Open Government Portal

Found 10 records similar to Toxicity of the pharmaceuticals finasteride and melengestrol acetate to benthic invertebrates

Federal

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.

Last Updated: Jan. 18, 2022
Date Published: Nov. 25, 2021
Organization: Environment and Climate Change Canada
Formats: HTML
Keywords:  Freshwater mussel, Lampsilis siliquoidea, Sediment, Toxicity, Pharmaceuticals, Finasteride, Melengestrol acetate, Lampsilis fasciola, The New Substances Assessment and Control Bureau (NSACB)
Federal

The toxicity and bioconcentration of 3 pharmaceuticals (amitriptyline, iopamidol, and sertraline) were examined using multiple life stages (larval, juvenile, and adult) of the unionid mussel Lampsilis siliquoidea. The endpoints examined varied with life stage but included survival, behavior (algal clearance rate, filtering frequency), and oxidative stress. Glochidia and juveniles were more sensitive than adult mussels. However, the compounds examined were not toxic at concentrations detected in the environment.

Last Updated: Apr. 22, 2022
Date Published: Feb. 4, 2022
Organization: Environment and Climate Change Canada
Formats: HTML CSV
Keywords:  Amitriptyline, Iopamidol, Sertraline, Pharmaceuticals, Bioconcentration, Freshwater mussel, The New Substances Assessment and Control Bureau (NSACB), Aquatic ecosystems, Toxicology
Federal

Freshwater mussels contribute important ecological functions to aquatic systems. The water filtered by mussel assemblages can improve water quality, and the mixing of sediments by burrowing mussels can improve oxygen content and release nutrients. However, nearly 70 percent of North American freshwater mussel species are listed as either endangered, threatened, or in decline. In Ontario, 28 species are in decline or in need of protection.

Last Updated: Jul. 29, 2021
Date Published: Aug. 8, 2018
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  freshwater mussels, glochidea, Lampsilis siliquoidea, Villosa iris, species at risk, pesticides, neonicotinoids, contaminants, viability
Federal

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.

Last Updated: Jan. 24, 2022
Date Published: Feb. 25, 2021
Organization: Environment and Climate Change Canada
Formats: HTML
Keywords:  Aquatic animals, Arthropods, Bioassay, Toxicology, Biology, Chemicals, Fresh water, Sediment, Toxicity
Federal

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.

Last Updated: Jan. 24, 2022
Date Published: Nov. 25, 2021
Organization: Environment and Climate Change Canada
Formats: HTML
Keywords:  amphipod, Hyalella azteca, sediments, toxicity, pharmaceuticals, finasteride, Melengestrol acetate, The New Substances Assessment and Control Bureau (NSACB), Environment
Provincial

Data collected from the Mussel Monitoring Program. Information includes date collected, year, month, water temperature, mussel larvae concentration, mussel larvae minimum size, mussel larvae maximum size, mussel larvae pre set size (%), mussel larvae set size (%), Pseudo nitzschia cells), tunicate larvae - Ciona, tunicate larvae - Styela, Tunicate Larvae – Botryllus, Tunicate Larvae – Botrylloides.

Last Updated: Sep. 27, 2022
Date Published: May 28, 2018
Organization: Government of Prince Edward Island
Formats: XML other CSV HTML RSS
Keywords:  aquaculture, mussel, monitoring, Government information
Provincial

This data set provides pesticide sample analyses results for finfish (brook and rainbow trout) and shellfish (mussels and soft shell clams) for the province’s Pesticide Monitoring Program. The sampling includes a total of nine rivers that are tested across PEI, with three of the rivers being sampled each year. Finfish are collected from the river by electrofishing or rod and reel. Shellfish are collected from the same river systems manually, as close to the finfish sampling as possible.

Last Updated: Sep. 28, 2022
Date Published: May 29, 2018
Organization: Government of Prince Edward Island
Formats: XML HTML RDF CSV other RSS
Keywords:  pesticide, monitoring, stream, finfish, shellfish
Federal

Rocky Mountain Ridged Mussels (Gonidea angulata) are listed under the Species at Risk Act (SARA) as a species of special concern and have been re-assessed by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) as endangered. These fresh water mussels are only found in Canada in the Okanagan Valley of British Columbia. As a continuation of previous work and to inform future assessments and conservation efforts within this geographic range, seven easily accessible sites known to have high densities of G. angulata were selected as prospective index sites to monitor relative abundance (i.e. mussel bed density) using snorkel surveys.

Last Updated: Aug. 11, 2021
Date Published: Mar. 29, 2017
Organization: Fisheries and Oceans Canada
Formats: PDF CSV HTML ESRI REST
Keywords:  Species at Risk Act, SARA, Rocky Mountain Ridged Mussels, Gonidea angulata, Scientific research, Scientific information, Fish
Provincial

Data are contaminants in tissue of caged mussels put in the river for 3 weeks at about 25 stations located on the Canadian and US side of the river. The main objective of the study is to identify contaminant sources, or source areas requiring more detailed follow-up investigations, based on the level  of contaminants in the mussels. Compounds monitored include: * organochlorinated pesticides * Polychlorinated biphenyls * dioxins/furan * chlorinated benzenes * Polycyclic aromatic hydrocarbons * industrial organic compounds

Last Updated: Jul. 22, 2022
Date Published: Jan. 11, 2020
Organization: Government of Ontario
Formats: PDF HTML ZIP
Keywords:  Environment and Natural Resources, Government, Government information
Federal

Survey data depicting the presence of the endangered Rocky Mountain Ridged Mussel (Gonidea angulata) from 2008-2011. Surveys were conducted by different researchers at different locations.

Last Updated: Jan. 20, 2022
Date Published: Jan. 19, 2018
Organization: Fisheries and Oceans Canada
Formats: PDF HTML ESRI REST CSV
Keywords:  Mussel, Pacific, British Columbia, Biology, Endangered species, Biological diversity
Date modified: