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Found 10 records similar to Chronic exposure to imidacloprid, clothianidin, and thiamethoxam mixtures and toxicity in Chironomus dilutus

Federal

Neonicotinoids are the most widely used insecticides in the world. They are preferentially toxic to insects while displaying a low toxicity toward vertebrates, and this selective toxicity has resulted in the rapid and ubiquitous use of these compounds. However, neonicotinoids have been detected in agricultural surface waters and are known to cause adverse effects in non-target aquatic organisms. A wide range of toxicity has been reported for aquatic crustaceans, but most of the studies focus on the acute effects of imidacloprid, and few data are available regarding chronic effects of other neonicotinoids or neonicotinoid replacements (e.g., butenolides).

Last Updated: Jul. 29, 2021
Date Published: May 4, 2018
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  amphipod, Hyalella azteca, insecticides, pesticides, neocotinoid, butenolide, sublethal effects, toxicity, Biochemicals
Federal

Neonicotinoids are the most widely used insecticides in the world and selective toxicity has resulted in the rapid and ubiquitous use of these compounds. Neonicotinoids are a class of neuro-active insecticides chemically similar to nicotine and are widely used in agriculture to protect crops from various insects. They are also used for other purposes, including killing insects in homes, controlling fleas on pets, and protecting trees from invasive insects such as the Emerald Ash borer. To date Imidacloprid is the most widely used insecticide in the world.

Last Updated: Jul. 29, 2021
Date Published: Dec. 9, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  Sturgeon Creek, Cedar Creek, Hillman Marsh, Lebo Creek, Fish Health, Water Quality Concentrations, Pumpkinseed (Lepomis gibbosus), Neonicotinoid, pesticides
Federal

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).

Last Updated: Jul. 29, 2021
Date Published: May 4, 2018
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  mayfly (Hexagenia spp.), neocotinoid, sublethal effects, toxicity, Biochemicals
Federal

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 long-term exposure of the freshwater crustacean Daphnia magna, the freshwater algae Chlamydomonas reinhardtii, and the rainbow trout (Oncorhynchus mykiss) to each compound alone and in a mixture.

Last Updated: Jan. 25, 2022
Date Published: Nov. 26, 2021
Organization: Environment and Climate Change Canada
Formats:
Keywords:  Chemicals, Toxicology, Toxic substances, Bioassay, Genomics, Biology, Aquatic animals, Freshwater fish, Surface water
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 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.

Last Updated: Jun. 15, 2022
Date Published: Oct. 18, 2021
Organization: Environment and Climate Change Canada
Formats: HTML CSV
Keywords:  Freshwater mussel (Lampsilis siliquoidea), Amphipod (Hyalella azteca), Freshwater mussel (Lampsilis fasciola), Mayfly (Hexagenia spp.), Sediment, Toxicity, Pharmaceuticals, Finasteride, Melengestrol acetate
Provincial

The data, which includes seeds treated with neonicotinoids (treated seed) and not treated with neonicotinoids (untreated seed) must be submitted no later than October 31 of each year, for the previous 12-month period ending August 30. The data includes: * total mass, in tonnes, of treated seed sold or transferred, or that was treated by a custom seed treater,  that contained imidacloprid, clothianidin or thiamthoxam * total number of acres that could have been planted with this amount of treated seed * total mass, in tonnes, of untreated corn and soybean seed sold or transferred Further information This dataset is related to the following: 1. Stream Neonicotinoid Monitoring Study 2. Soil Neonicotinoid Monitoring Study 3.

Last Updated: Feb. 1, 2023
Date Published: Jan. 11, 2020
Organization: Government of Ontario
Formats: XLSX CSV HTML PDF
Keywords:  Environment and Natural Resources, Environment and energy
Federal

Restrictions in the utilization of polybrominated diphenyl ether (PBDE) mixtures have led to the increased usage of alternative flame retardant additives in a wide range of commercial applications. The present study examined the occurrence of established and emerging flame retardants (EFRs) in fish from a densely-populated urbanized sector of the St. Lawrence River (Montreal, Quebec, Canada). Thirty-eight PBDE congeners and sixteen EFRs were determined in fish belonging to three predatory species (yellow perch, northern pike, and muskellunge). The bioavailability of these EFRs in human-impacted aquatic ecosystems warrants further environmental assessment and toxicity testing.

Last Updated: Jul. 29, 2021
Date Published: May 4, 2018
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  emerging flame retardants (EFRs), polybrominated diphenyl ethers (PBDEs), dechloranes, contaminants, Fish, yellow perch (Perca flavescens), northern pike (Esox lucius), muskellunge (Esox masquinongy), St. Lawrence Action Plan (SLAP)
Federal

Health Canada is issuing this notice to communicate the Department's interim approach on the exemption of certain medical gases and their medically appropriate mixtures from the requirement to have an expiration date on a product label as per Division 1 of Part C of the Food and Drug Regulations (the Regulations).

Last Updated: Dec. 29, 2021
Date Published: Mar. 18, 2021
Organization: Health Canada
Formats: HTML
Keywords:  medical-gases, expiration-dating for medical-gases, exemption of certain medical-gases, medically appropriate mixtures, product label, Division 1 of Part C, Food and Drug-Regulations
Federal

Kimberlites are rock formation where diamonds can be found. Diamonds form at a depth greater than 150 kilometres within the earth. After their formation, diamonds are carried to the surface of the earth by strong volcanic activity. This mixture of magma, transported rock and diamonds forms pipes called kimberlites as it reaches the surface.

Last Updated: Mar. 14, 2022
Date Published: Dec. 31, 2010
Organization: Natural Resources Canada
Formats: JP2 other ZIP
Keywords:  diamonds, economy, map, mining industry
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