Sensitivity of freshwater mussel species to various pesticides detected in Ontario, Canada
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. Even though freshwater mussels have a heightened sensitivity to some contaminants, few studies have investigated the risks that various pesticide classes pose to one freshwater mussel species or among life stages. Lampsilis siliquoidea and Villosa iris were the focus of the present study, with the latter currently listed as of "special concern" in Canada. A potential risk to the recovery of freshwater mussel species is the presence and persistence of pesticides in Ontario surface waters. Acute (48 hour) toxicity tests were performed with V. iris glochidia to determine the effect on viability (surrogate for survival) following exposure to 4 fungicides (azoxystrobin, boscalid, metalaxyl, and myclobutanil), 3 neonicotinoids (clothianidin, imidacloprid, and thiamethoxam), 2 carbamates (carbaryl and malathion), 1 organophosphate (chlorpyrifos), and 1 butenolide (flupyradifurone). Juvenile and adult L. siliquoidea were also exposed to azoxystrobin, clothianidin, imidacloprid (juvenile only), and carbaryl (adult only).
Basic view
Metadata Record Information
- File Identifier
- 0db1a97c-719a-4f1f-a0f3-ee68dca5bacd XML
- Date Stamp
- 2022-11-09T16:52:52
- Metadata language
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eng; CAN
- Character set
- UTF8
- Hierarchy Level
- Dataset
Data identification
- Date (Publication)
- 2018-08-08
- Date (Creation)
- 2019-05-27
- Status
- Completed
- Metadata language
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eng; CAN
- Character set
- UTF8
- Topic category
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- Environment
- Biota
- Maintenance and Update Frequency
- Not planned
- Spatial representation type
- Text, table
Keywords
- Theme
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freshwater mussels
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glochidia
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Lampsilis siliquoidea
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Villosa iris
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species at risk
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Observation/Measurement
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pesticides
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neonicotinoids
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contaminants
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viability
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mortality
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exposure
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toxicity
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Government of Canada Core Subject Thesaurus
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Pesticides
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ECCC Information Category EN
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Nature and Biodiversity - Contaminants
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Business Functions
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Assess Toxicity, Manage and Monitor for Environmental Presence of Hazardous Substances and Waste
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Monitor / Assess Substance and Waste Levels in Air, Water, Soil, Biota
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Geography
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Ontario (ON)
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Branch
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Science and Technology Branch
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Directorate
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Water Science and Technology
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Program (PAA)
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1.2.1. Water Quality and Aquatic Ecosystems Health
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GC Security Level
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Unclassified
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- Use Limitation
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Open Government Licence - Canada ( http://open.canada.ca/en/open-government-licence-canada )
- Access Constraints
- License
- Use Constraints
- License
- Begin Date
- 2016-01-01
- End Date
- 2018-12-31
Extent
Ref. system Reference Systems
- Reference system identifier
- http://www.epsg-registry.org / EPSG:4326 /
Distribution
Distribution Formats
- Distribution format
-
-
CSV
(
1
)
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CSV
(
1
)
https://www.canada.ca/