Bioassessment/Biomonitoring
Bioassessment/Biomonitoring
Filter Total Items: 23
Development of Next Generation Techniques of fecal samples collected from nestling cactus wren
Coastal cactus wren populations have declined in southern California over the last three decades. In San Diego County, this decline has been especially noticeable in the Otay area, which in 2014 supported 14 territories on conserved lands. In the past, there were 25-53 active territories reported for this same area, with the highest estimate in 1992. There is also concern the number of active...
Metabarcoding of stomach contents from the Round Goby (Negobius melanostromus) in Pennsylvania
The Round Goby, Neogobius melanostomus , is a small benthic fish native to the Sea of Azov, the Caspian Sea, the Black Sea and the Sea of Marmara.
Establishing Molecular Methods to Quantitatively Profile Stomach Diet Items of Fish—Application to the Invasive Blue Catfish (Ictalurus furcatus)
USGS scientists are collaborating with the Maryland Department of Natural Resources (MDDNR) to develop and evaluate a genetic assay for blue catfish fish diets that will allow us to design a cost-effective monitoring program for determining the diet of wild fish.
Developing Novel Amplicon Sequencing Assays From Scat For Diet Analysis of the pacific pocket mouse (perognathus longimembris pacificus)
Developing Novel Amplicon Sequencing Assays From Scat For Diet Analysis of the pacific pocket mouse ( perognathus longimembris pacificus )
Avian influenza virus in the aquatic environment: Surveillance in waterfowl habitat on the Delmarva Peninsula.
Avian influenza virus in the aquatic environment: Surveillance in waterfowl habitat on the Delmarva Peninsula.
An Evaluation of the Toxicity of Potassium Chloride, Active Compound in the Molluscicide Potash, on Salmonid Fish and Their Forage Base
Potash, with the active ingredient potassium chloride (KCl) is a chemical that is currently being evaluated for potential use as a molluscicide to combat invasive zebra mussels and quagga mussels in Western United States waters.
Point and Non-Point Sources of Endocrine Disrupting Compounds and the Potential Effects on Fish and Frogs in the New Jersey Pinelands
This project, in collaboration with the NJ Pinelands Commission and the USGS NJ Water Center, is evaluating potential effects of endocrine-disrupting chemicals from point and nonpoint sources in the Pinelands Area, a research cluster as part of the Delaware River Watershed Initiative.
Human and Ecological Health Impacts Associated with Water Reuse and Conservation Practices
Human and Ecological Health Impacts Associated with Water Reuse and Conservation Practices
Endocrine Disrupting Chemicals and Prevalence of Intersex in Fish Populations in New Jersey
Endocrine disrupting chemicals (EDCs) are compounds with the potential to interfere with normal endocrine communication in organisms.
Prevalence of novel, emerging hepatitis viruses in wild white suckers and their association with liver tumors in the Great Lakes region
Prevalence of novel, emerging hepatitis viruses in wild white suckers and their association with liver tumors in the Great Lakes region
Health assessment of invasive northern snakehead
The image is an investigator performing venipuncture for blood collection for health analysis of a northern snakehead fish collected from a Potomac River tributary in northern Virginia.