## Breadcrumb

-  Publications 
-  Articles 

#           Perfluoroalkyl substances in plasma of smallmouth bass from the Chesapeake Bay Watershed      

      May 30, 2021    

Smallmouth bass Micropterus dolomieu is an economically important sportfish and within the Chesapeake Bay watershed has experienced a high prevalence of external lesions, infectious disease, mortality events, reproductive endocrine disruption and population declines. To date, no clear or consistent associations with contaminants measured in fish tissue or surface water have been found. Therefore, plasma samples from two sites in the Potomac River and two in the Susquehanna River drainage basins, differing in land-use characteristics, were utilized to determine if perfluoroalkyl substances were present. Four compounds, perfluorooctane sulphonic acid (PFOS), perfluoroundecanoic acid (PFUnA), perfluorodecanoic acid (PFDA) and perfluorododecanoic acid (PFDoA), were detected in every fish. Two additional compounds, perfluorooctane sulphonamide (PFOSA) and perfluorononanoic acid (PFNA), were less commonly detected at lower concentrations, depending on the site. Concentrations of PFOS (up to 574 ng/mL) were the highest detected and varied significantly among sites. No seasonal differences (spring versus fall) in plasma concentrations were observed. Concentrations of PFOS were not significantly different between the sexes. However, PFUnA and PFDoA concentrations were higher in males than females. Both agricultural and developed land-use appeared to be associated with exposure. Further research is needed to determine if these compounds could be affecting the health of smallmouth bass and identify sources.

## Citation Information

## Related Content

                  -              Data           
                  -              Connect           

May 28, 2021

####                 Morphometric, Age and Concentrations of Perfluoroalkyl Substances in Smallmouth Bass Plasma from Four Sites in the Chesapeake Bay Watershed              

Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Chesapeake Bay Activities, Eastern Ecological Science Center

#### Vicki S. Blazer

#####  Research Fishery Biologist

Eastern Ecological Science Center

vblazer@usgs.gov

304-724-4434

#### Stephanie Gordon

##### Physical Scientist

Eastern Ecological Science Center

sgordon@usgs.gov

703-336-2793

#### Heather Walsh

##### Research Fish Biologist

Eastern Ecological Science Center

hwalsh@usgs.gov

304-724-4445

## Related Content

May 28, 2021

####                 Morphometric, Age and Concentrations of Perfluoroalkyl Substances in Smallmouth Bass Plasma from Four Sites in the Chesapeake Bay Watershed              

Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Chesapeake Bay Activities, Eastern Ecological Science Center

#### Vicki S. Blazer

#####  Research Fishery Biologist

Eastern Ecological Science Center

vblazer@usgs.gov

304-724-4434

#### Stephanie Gordon

##### Physical Scientist

Eastern Ecological Science Center

sgordon@usgs.gov

703-336-2793

#### Heather Walsh

##### Research Fish Biologist

Eastern Ecological Science Center

hwalsh@usgs.gov

304-724-4445

### Study Area

### Contact

####               Eastern Ecological Science Center at the Leetown Research Laboratory          

11649 Leetown RoadKearneysville, WV25430United States

### Explore Search

                  - Fishing and Hunting
                  - Fishing and Hunting
                  - Biology
                  - Ecosystems
                  - United  States
                  - chesapeake bay watershed
                  - New York
                  -  Pennsylvania
                  -  Maryland
                  -  Virginia

View All **