Fish

Human and Ecological Health Impacts Associated with Water Reuse and Conservation Practices

Endocrine disrupting chemicals (EDCs) are compounds with the potential to interfere with normal endocrine communication in organisms.

Evaluating the pathogenicity and replication of a novel aquareovirus that infects the endangered fountain darter, Etheostoma fonticola

Prevalence of novel, emerging hepatitis viruses in wild white suckers and their association with liver tumors in the Great Lakes region

A major focus of USGS-LSC is the design and evaluation of state-of the-art upstream and downstream fish passage structures for hydropower facilities of different sizes and locations and for different fish species, including endangered sturgeons and Atlantic salmon. Performance, physiology, behavior and energetics of each fish species are tested in-house for each design.

Striped bass ( Morone saxatilis ) displaying ulcerative skin lesions and chronic wasting, both typical clinical signs of mycobacteriosis, a bacterial disease that is problematic among many types of fishes around the world.

Whirling disease, caused by the myxosporean parasite Myxobolus cerebralis was identified as an emerging pathogen of trout in the intermountain west region of the U.S. in the early 1990’s. Investigators here worked collaboratively with others to further our understanding of this disease and its impacts on trout and other salmonid fishes.

This rainbow trout is displaying clinical signs of enteric redmouth disease caused by a systemic bacterial infection.