Science activity #49816,
updated 29 April 2022
The effects of early hypersaline acclimation due to climate change on the toxicity of pyrethroid, an insecticide, in salmonids.
Description / purpose
Sea level rise and drought are expected to result in hypersaline waterways in the Delta. Endangered Chinook salmon and Steelhead trout go through smoltification to be able to live and mature in saline environments. However, with salinities and temperatures increasing in historically freshwater areas, these fish may be facing new stressors. Pesticide runoff into the Delta is common due to the urbanization and agriculture of many regions and can adversely affect fish. Additionally, previous research has shown that salinity exposure increases the toxicity of contaminants in anadromous fish, and it is had been demonstrated that bifenthrin, a common insecticide in the Bay, can have endocrine disrupting effects on juvenile salmonids.
This project will examine the impacts of hypersaline conditions, various temperatures, and exposure to bifenthrin on the development and survival of juvenile Chinook salmon and Steelhead trout. Specifically, it will:
Test the impacts of premature hypersaline acclimation and temperature on the survivial and smoltification process of a range of juvenile salmonids;
Test the combined impacts of premature hypersaline acclimation, temperature, and bifenthrin exposure on smoltification, survival and behavior;and
Predict the population level effects of drought and pesticide runoff on the health of endangered salmonids
Additionally, this research will provide information to CA Department of Pesticide Regulation for potential pesticide management in the Delta, as well as to the CA Department of Fish and Wildlife for conservation practices of endangered juvenile salmonids in the Delta.
Linked science activities
None specifiedCollaborators
None specifiedActivity status
- 1 Awarded / Initiating (2016)
- 2 In progress / Ongoing (2016 - 2018)
- 3 Complete
Funding summary
Total allocated funding: $0
Label | Value |
---|---|
Contract # or labor code | None |
Implementing organization | California Sea Grant |
Funding organization | California Department of Fish and Wildlife [CDFW] |
Funding Source | California Department of Fish and Wildlife CDFW - Prop 1 |
Date of award | Not provided |
Date of fiscal year-end | Not provided |
Total award amount | $0 |
State type of obligation | Not provided |
Federal type of obligation | Not provided |
Reimbursability | Not provided |
Procurement mechanism | Not provided |
Location
Subbasins
Delta regions
Geographic tags
None specified
Products and outputs
None provided