Luke R Iwanowicz, Ph.D. (Former Employee)

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

NJ WSC and Leetown Science Center scientists in cooperation with the New Jersey Department of Environmental Protection were tasked with characterizing endocrine disruption in smallmouth bass from New Jersey.

Molecular tools and methodologies are used designed and used for diverse applications. These applications can be used to assess questions of threatened and endangered species, population and conservation biology, ecological communities, microbial diversity, molecular epidemiology and genomics of non-model organisms among many others. Successful integration of these tools and technologies greatly...

The first known hepatitis B virus to infect fish (white sucker; Catostomus commersonii) has been discovered by U.S. Geological Survey (USGS) scientists.

Estrogens are recognized as modulators of immune responses in mammals, but how these effects might occur in fish was not understood. U.S. Geological Survey (USGS) scientists published findings that fish white blood cells (leukocytes) have specific estrogen receptors (ERs)—a discovery that moves scientists one step closer to understanding the connection between exposure to estrogenic substances and...

Testing of U.S. streams has detected glucocorticoid and androgen biological activity. In a collaborative study between the National Cancer Institute (NCI), Laboratory of Receptor Biology and Gene Expression, the U.S. Geological Survey (USGS), and others, scientists studied the potential for the biological activity in streams of glucocorticoids and androgens hormones—both potential endocrine...