Toxicokinetics and toxicity of PCBs in turtles
Snapping turtles have been used by the EC since the early 1980s to determine spatial and temporal trends in PCB (and other organochlorine) concentrations, and have furthermore been used extensively for assessing AOCs. There is some concern, however, that their longevity may pose problems in interpreting body burdens. Given that Chelydra can live for over 50 years, individuals would be exposed to temporally varying levels of PCBs over their lifetime. Assessment of their body burdens, either through eggs, plasma, or other tissues, will indicate the temporal integration of PCBs over their lifetime, with the caveat that the proportion of PCBs from any given time period to the current burden will decline over time. The objective is to estimate depuration rates of PCBs in turtles to determine how much contribution past exposures have on the current tissue burden. In addition, there is very little information on the toxicity of PCBs to turtles. This project will assess toxicity, using genetic biomarkers (e.g. P450, oxidative stress, heat shock proteins, thyroid, and others), of PCB exposure to snapping turtles exposed through diet.
Basic view
Metadata Record Information
- File Identifier
- c3e5cbeb-fb65-4c37-8f42-cf30df7904c6 XML
- Date Stamp
- 2022-01-11T14:25:29
- Metadata language
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eng; CAN
- Character set
- UTF8
- Hierarchy Level
- Series
http://ec.gc.ca
Data identification
- Date (Creation)
- 2016-09-27
- Date (Publication)
- 2016-10-03
- Status
- On going
- Metadata language
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eng; CAN
- Character set
- UTF8
- Topic category
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- Biota
- Maintenance and Update Frequency
- As needed
- Spatial representation type
- Vector
Keywords
- Theme
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PCBs, snapping turtle, toxicokinetics
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Government of Canada Core Subject Thesaurus
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Toxicology
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ECCC Information Category EN
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Nature and Biodiversity - Contaminants
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Geography
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Ontario (ON)
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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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Assess Toxicity of Substance
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external.theme.EC_Branch
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Science and Technology Branch
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external.theme.EC_Directorate
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Wildlife and Landscape Science
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external.theme.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
- Copyright
- Use Constraints
- Copyright
- Begin Date
- 2016-09-27
Extent
Ref. system Reference Systems
- Reference system identifier
- EPSG / EPSG:4326 /
Distribution
Distribution Formats
- Distribution format
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CSV
(
unknown
)
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CSV
(
unknown
)
http://ec.gc.ca