Monitoring of wild fish health at selected sites in the Great Lakes Basin: methods and preliminary results
Open-File Report
2014-1027
Prepared in Cooperation with the U.S. Fish and Wildlife Service
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Abstract
During fall 2010 and spring 2011, a total of 119 brown bullhead (Ameiurus nebulosus), 136 white sucker (Catostomus commersoni), 73 smallmouth bass (Micropterus dolomieu), and 59 largemouth bass (M. salmoides) were collected from seven Great Lakes Basin Areas of Concern and one Reference Site. Comprehensive fish health assessments were conducted in order to document potential adverse affects from exposure to complex chemical mixtures. Fish were necropsied on site, blood samples obtained, pieces of liver, spleen, kidney, gill and any abnormalities placed in fixative for histopathology. Liver samples were saved for gene expression analysis and otoliths were removed for aging. A suite of fish health indicators was developed and implemented for site comparisons and to document seasonal effects and species differences in response to environmental conditions. Organism level (grossly visible lesions, condition factor), tissue level (microscopic pathology, organosomatic indices, micronuclei, and other nuclear abnormalities), plasma factors (reproductive steroid hormones, vitellogenin), and molecular (gene expression) indicators were included. This report describes the methods and preliminary results.
Suggested Citation
Blazer, V., Mazik, P.M., Iwanowicz, L., Braham, R., Hahn, C., Walsh, H.L., Sperry, A., 2014, Monitoring of wild fish health at selected sites in the Great Lakes Basin: methods and preliminary results: U.S. Geological Survey Open-File Report 2014-1027, Report: vi, 31 p.; Appendix 1, https://doi.org/10.3133/ofr20141027.
ISSN: 2331-1258 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Monitoring of wild fish health at selected sites in the Great Lakes Basin: methods and preliminary results |
| Series title | Open-File Report |
| Series number | 2014-1027 |
| DOI | 10.3133/ofr20141027 |
| Year Published | 2014 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | New Jersey Water Science Center |
| Description | Report: vi, 31 p.; Appendix 1 |
| Country | United States |
| Other Geospatial | Great Lakes Basin |
| Online Only (Y/N) | Y |
| Additional Online Files (Y/N) | Y |